Answer:
The correct matching is given below.
Explanation:
1 phospholipid 8 makes up most of the cell membrane
2 integral membrane protein 6 used to move large molecules through the membrane that cannot pass through by simple diffusion.
3 Carbohydrate chain 5 helps identify a cell to macromolecules and other cells.
4 cholesterol 7 helps to staibilize the lipid(phospholipid ) bi-layer.
During intense
exercise, potassium tends to accumulate in the
fluid surrounding muscle cells. What membrane
protein helps muscle cells counteract this
tendency? Explain your answer.
Answer:
Sodium ion
Explanation:
A sodium/potassium ion channel protein would help the muscle cells counteract this tendency by pumping potassium (K+) into the cell and sodium (Na+) out. This raises the concentration of K+ ions within the axoplasm relative to the outside causing the Na+ ions to diffuse out. This is the resting potential
Which cellular structure would be the most likely location for synthesis of these enzymes
The rough endoplasmic reticulum, with its surface-bound ribosomes, is the site for synthesis of enzymes intended for export in eukaryotic cells. Post-synthesis, these proteins are modified in the Golgi apparatus before being transported to their final destinations.
Explanation:The cellular structure most likely involved in the synthesis of enzymes for export is the endoplasmic reticulum (ER), specifically the rough ER due to the presence of ribosomes on its surface. Enzymes, which are proteins necessary for catalyzing various biological processes, are synthesized by ribosomes that are found either floating freely in the cytoplasm or attached to the rough ER. When enzymes are meant for export or for use in lysosomes, the rough ER becomes the primary site of synthesis. After synthesis, these proteins are usually sent to the Golgi apparatus for further modification and sorting, before being shipped to their final destinations.
Cells that are highly active in protein synthesis, such as those in the pancreas that produce digestive enzymes, have a large number of ribosomes. Moreover, certain enzymes are compartmentalized within specific organelles, like mitochondria, which house enzymes involved in cellular respiration; or lysosomes, which contain enzymes that break down cellular debris. This compartmentalization provides efficient and regulated chemical reactions within the cell.
Which factors affect the speed of sound?
The factors that effect the speed of sound are not random effects based on a whim but exact scientific principles that effect the speed of sound. The exact number 1,126 feet per second is taken in some precise conditions: in dry air at 68% Fahrenheit. In other words in the most “average” conditions possible. Therefore a great average, but it is variable.
Here are the factors that effect the speed of sound:
♦ Medium
Medium has a huge effect of the speed of sound. When most people discuss the “speed of sound” they are talking about the propagation of sound waves through the medium of “Air”. For anyone who has gone underwater and listen to people talking above it is likely that one would notice the muted an “odd” way that voices sound underwater. This is because the “medium” of water greatly bends, distorts and changes the speed of sound wave.
There is a whole aspect of science that measure and defines the effect of different mediums (gaseous and liquid) on the speed of sound. This is called Fluid Dynamics. Underwater communication is possible if you understand how this wave propagation as well as another important factor (pressure).
Because of elasticity of materials sound will, as a rule of thumb, generally travel faster in solids than in liquids and faster in liquids than in gases.
♦ Temperature
Temperature has a large effect on the speed of sound. Not as much as the “Medium” does, but far more than anything else. Temperature affects the speed of sound because temperature can affect the “elastic” qualities of different mediums. At the very basics lower temperatures will decrease the speed of sound while higher temperatures will increase the speed of sound, all other factors being equal.
♦ Pressure
Pressure is the final factor that has a significant impact on the speed of sound. The effect of pressure on the speed of sound is due to the materials inertial properties. In short, the more pressure that is applied to the material or medium the denser it becomes and the greater the “inertia” becomes. This makes any interactions between particles slower. Therefore the speed of sound throughout the medium is slowed due to the greater pressure.
I hope that helps!!!
Answer:
temperature and any type of medium
Explanation: I just answered the question, that was the answer.
An inorganic mineral is not composed of anything that was once _____.
A.oxidized
B.alive
C.used
D.crystallized
E.reduced
B
An inorganic mineral is not composed of anything that was once alive
Explanation:
Organic minerals made from life. They mainly make up the biosphere and examples are minerals in plants and animals. Even after the death and decomposition of the living organisms, the minerals from the decomposition are considered organic. Organism matter is mainly made up of carbon and hydrogen.
Inorganic material, on the hand, are not derived from life and include substances like metal elements and inorganic salts.
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Final answer:
An inorganic mineral is not composed of anything that was once alive, emphasizing the distinction between organic and inorganic substances and highlighting the characteristics that define inorganic minerals, such as their crystalline structure and definite chemical composition.
Explanation:
An inorganic mineral is not composed of anything that was once alive. This distinction is crucial in understanding what constitutes an inorganic mineral versus organic matter. Minerals are defined as naturally occurring, inorganic solids with a definite chemical composition and a characteristic crystalline structure. Organically derived compounds, which include elements such as carbon (C), hydrogen (H), oxygen (O), and nitrogen (N) derived from living organisms, do not fall under the definition of an inorganic mineral. The presence of a crystalline structure indicates that the atoms within minerals are arranged in an orderly manner, reflecting the internal atomic arrangement. It is this precise arrangement and chemical composition that differentiate minerals from other substances.
Select the correct answer.
Which combination of gases dominates Earth’s atmosphere?
A.
argon (78.50%), oxygen (20.90%)
B.
nitrogen (78.10%), oxygen (20.90%)
C.
carbon dioxide (78.15%), oxygen (20.90%)
D.
methane (50.10%), oxygen (49.9%)
E.
nitrogen (20.9%), oxygen (78.10%)
Answer:
Answer is B.
nitrogen (78.10%), oxygen (20.90%) - this combination of gases dominate the Earth’s atmosphere.
Explanation:
The atmosphere of earth is a gaseous layer which surrounds the earth. It protects the life on earth by absorbing harmful ultraviolet radiation, reducing temperature extremes, maintaining the existence of liquid water on the earth's surface and warming the surface. The atmosphere consists of many gases including some pollutants and greenhouse gases. Nitrogen is the gas present in the atmosphere most abundantly while Oxygen and Argon take the second and third place. Atmosphere contains approximately 78% of nitrogen , 21% of oxygen and 0.9% of argon. Gases like carbon dioxide, nitrous oxides, methane, ozone and the water vapor constitutes the rest of the atmosphere. Many small particles called aerosols are also there which include dust, spores, pollen, volcanic ash, smoke etc. There are five layers of atmosphere. Troposphere (0 to 12 km) where we live is the lowest layer of earth's atmosphere ,which is closest to the earth's surface contains half of the atmosphere. Here most clouds are found and almost all weather occurs. Stratosphere (12 to 50 km) is the second layer where jet aircraft and weather balloons fly. It contains the ozone layer that absorbs harmful radiation from the sun. Mesosphere (50 to 80 km) is the third highest layer and the coldest part of the atmosphere where most meteors burn up upon entering in to the atmosphere. The fourth layer is thermosphere (80 to 700 km) where the International Space Station orbits earth and the space shuttles flew. Exosphere (700 to 10,000 km) is the outermost layer where the atmosphere merges into outer space. Most of the satellites orbiting earth are found here.
Which statement describes the movement of water when a cell shrinks and shrivels due to osmosis?
Water went into the cell because the concentration of water inside the cell was lower than the concentration outside the cell.
Water went out of the cell because the concentration of water inside the cell was higher than the concentration outside the cell.
The cell membrane used energy to move water into the cell through passive transport.
The cell membrane used energy to move water out of the cell through passive transport.
Answer:
Water went out of the cell because the concentration of water inside the cell was higher than the concentration outside the cell.
Explanation:
when there is a higher concentration of water inside the cell, water will begin to move out of the cell, eventually creating a hypertonic solution in which the cell shrivels and shrinks.
Final answer:
When a cell shrinks and shrivels due to osmosis, it means that water went out of the cell because the concentration of water inside the cell was higher than the concentration outside the cell.
Explanation:
Osmosis is the diffusion of water molecules across a selectively permeable membrane from an area of higher concentration to an area of lower concentration. When a cell shrinks and shrivels due to osmosis, it means that water went out of the cell because the concentration of water inside the cell was higher than the concentration outside the cell. Cells placed in a hypotonic solution will take in water across their membrane until both the external solution and the cytosol are isotonic.
(Urgent) DNA is the primary source of heritable information in cells. Explain how the
chemical structure of DNA makes this possible.
Answer:
The DNA is made up of two strands which are joined through the hydrogen bonds present in the nucleotides. There are 4 nucleotides which make up the DNA. Adenine of one strand pairs with thymine of the other strand. Cytosine of one strand pairs with guanine of the other strand. These bonds keep the DNA double helix intact. Information stored in the DNA is unique due to the sequence of pairing of these nucleotides.
The DNA encodes information through the proper sequencing of the nucleotides. These DNA messages encode for certain types of proteins.
The chemical structure of DNA, with its double-helix shape and specific base pairing properties, allows it to store and transmit heritable information in cells.
Explanation:The chemical structure of DNA makes it possible to be the primary source of heritable information in cells. DNA is composed of two strands that are connected by nucleotides, which are made up of a sugar, a phosphate group, and a nitrogenous base. The sequence of these nitrogenous bases along the DNA molecule carries the genetic information that is passed on to offspring.
The complementary pairing of nitrogenous bases allows DNA to replicate itself during cell division, ensuring that the heritable information is faithfully passed on. For example, adenine on one strand always pairs with thymine on the other strand, while guanine always pairs with cytosine. This base pairing rules ensures the accuracy of DNA replication.
Overall, the double-helix structure of DNA and its specific base pairing properties allow it to store and transmit heritable information, making it the primary source of genetic material in cells.
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Anser as soon as possible! Worth 50 points! And make sure to EXPLAIN. Please and thank you!
-Airee (not real name just my online name)
Antigens can trigger an immune response. Is this a specific or a nonspecific defense? Explain.
The immune system protects the body from possibly harmful substances by recognizing and responding to antigens. Antigens are substances (usually proteins) on the surface of cells, viruses, fungi, or bacteria. Nonliving substances such as toxins, chemicals, drugs, and foreign particles (such as a splinter) can also be antigens. The immune system recognizes and destroys, or tries to destroy, substances that contain antigens. Your body's cells have proteins that are antigens. These include a group of antigens called HLA antigens. Your immune system learns to see these antigens as normal and usually does not react against them.
Innate, or nonspecific, immunity is the defense system with which you were born. It protects you against all antigens. Innate immunity involves barriers that keep harmful materials from entering your body. These barriers form the first line of defense in the immune response. Examples of innate immunity include:
Cough reflex
Enzymes in tears and skin oils
Mucus, which traps bacteria and small particles
Skin
Stomach acid
Innate immunity also comes in a protein chemical form, called innate humoral immunity. Examples include the body's complement system and substances called interferon and interleukin-1 (which causes fever). If an antigen gets past these barriers, it is attacked and destroyed by other parts of the immune system. Acquired immunity is immunity that develops with exposure to various antigens. Your immune system builds a defense against that specific antigen. Passive immunity is due to antibodies that are produced in a body other than your own. Infants have passive immunity because they are born with antibodies that are transferred through the placenta from their mother. These antibodies disappear between ages 6 and 12 months. Passive immunization may also be due to injection of antiserum, which contains antibodies that are formed by another person or animal. It provides immediate protection against an antigen, but does not provide long-lasting protection. Immune serum globulin (given for hepatitis exposure) and tetanus antitoxin are examples of passive immunization.
Antigens are substances (usually proteins) on the surface of cells, viruses, fungi, or bacteria. ... Your immune system learns to see these antigens as normal and usually does not react against them. INNATE IMMUNITY. Innate, or nonspecific, immunity is the defense system with which you were born
Answer:
Specific Defense
Explanation:
Specific immune system gets activated when the pathogens (foreign elements) enter the body and are able enough to bypass the innate immune defenses thereby activating the adaptive immune system
Specific defense is triggered by elements found on the surface of pathogens. These surface elements are called antigens. Antigens responds to these pathogens by producing antibodies specific to pathogen surface type.
list of 50 non living things
Answer:
Hot air balloon
Trench coat
Sofa
Coloring book
The Leaning Tower of Pisa
Kitchen sink
Hydro flask
Lay's chips
Blue Castle Coffee
My reading assignment
French fry
Laptop charger
The laptop itself
Cruise ship
Bow
Arrow
Closet door
Bowling ball
The X that marks the spot
Tissue box
Mirror
Mozzarella sticks
Ammonium Lactate lotion
Barcode scanner
Chimney
Kilt
Erhu
Battery
Message
Lip piercing
Submarine
Nail polish
Caboose
Combat boots
Bathtub
Car radio
Pacifier
Reese's Peanut Butter Cups
Bluetooth speakers
Punching bag
Sidewalk
Sweater
Contact lenses
Police uniform
Artificial plant decor
Fedora
Whip
Pendulum clock
Microphone
Me in a thousand years
Which of the following is NOT TRUE concerning enzymes?
A. Enzymes have optimal environmental conditions
B. Enzymes are consumed by the reactions they catalyze
C. Enzymes can catalyze only one or a very few different reactions
D. All enzymes are proteins
E. Enzymes can only catalyze spontaneous reactions
Answer:
It should be B.)
Explanation:
Enzymes are catalysts, which means they are not consumed by the chemical reactions they catalyze.
The correct answer is D. All enzymes are proteins.
Explanation:D. All enzymes are proteins is the correct answer as it is NOT TRUE concerning enzymes. While the majority of enzymes are proteins, there are a few exceptions. Ribozymes, for example, are enzymes that are composed of RNA molecules rather than proteins.
Enzymes have optimal environmental conditions, which refers to specific pH and temperature ranges where the enzyme operates most efficiently. They are not consumed by the reactions they catalyze, meaning that they can be reused. Enzymes can catalyze only one or a very few different reactions, and they can catalyze both spontaneous and non-spontaneous reactions.
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What role do enzymes play in chemical reaction that occur in your body
Answer AND Explanation:
There is a large number of biochemical reactions taking place in a cell at any given time. Enzymes being biological catalysts control these reactions and regulate them so that they proceed at a pace that is suitable for sustaining life. Thus enzymes regulate cellular activities. Enzymes also ensure that only the required reactions take place and progress to their appropriate extent.
When you’re wearing a big sweater, what kind of energy is keeping you warm?
A
chemical energy
B
thermal energy
C
sound energy
D
kinetic energy
Answer:
b. thermal
Explanation:
When you’re wearing a big sweater, thermal energy is the kind of energy that keeping you warm. Thus, option B is correct.
What is kinetic energy?
The energy of the body by the virtue of its motion is known as the kinetic energy of the body. It is defined as the product of half of mass and square of the velocity.
The passage of vibrations through matter is characterized as sound energy. When an item vibrates, sound energy is created, resulting in noise. Sound vibrations induce pressure waves to flow through a material like air, water, wood, or metal.
Each magnetic field, also known as magnetic energy, includes energy. Electric currents create magnetic fields, magnetic energy is a kind of energy for transporting charge carriers.
Therefore, When you’re wearing a big sweater, thermal energy is the kind of energy that keeping you warm. Thus, option B is correct.
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Create an outline to organize your presentation. Write the outline for your presentation in the space provided. You can
organize your presentation any way you think is best. You may find these guidelines for writing a five-paragraph essay
helpful. Be sure to account for the claim you are making in your introduction, and include a works cited page at the end.
Remember, you just need to structure your 10-slide presentation now. You're not creating the presentation yet.
Answer:
People need to use claener ways to help the enviroment they can do this by useing clean energy sorces, and learn about the history of the energy scources, and how much is used.
Natural gasses are gasses formed deep beneath the Earth's surface that are used to fuel things like cars and motercycles. They are considered as Fossil Fuels.
They are formed when natural materials such as decomposing plant and animal matter are exposed to intense heat and pressure underground for over millions of years through this prosses they transform. natural gasses are not found in equal amounts all around the globe this is because each environment has different heat temperatures, ground height, some might not have as much plant life or animal life there for a place like a marsh or swamp will probably have more considering it's mostly warm in these areas and there's a lot of wild life liveing there.
In 2019 the US used 31 trillion cubic feet of natural gasses, in 2016 the US consumed 731,071,000 Tons of coal, and in 2017 the US used 7.28 billion barrels of petroleum products this is because they want CO2.
CO2 is in Natural gas so when it burns it's releasing what it's made up of along with the CO2. It is made up of CO2 materials while it also gets rid of the oxegen.
Natural Gasses produce 117lbs. per MBtu(Million British thermal unit), Coal produces 200lbs. per MBtu, and Oil produces 160lbs. per MBtu. this is how it is used.
Solar, Wind, and Hydroelectric are all Renewable and considered Carbon-free energy scourses. Nuclear power is also considered carbon-free because it does not burn like coal. Wind and Solar can be available everywhere, hydroelectric would only be near water and solar might not be very efficient in places that don't get a lot of sunlight so they have nucular because it powers a LOT of places it powers up to 10.7% of all the energy.
I would not consider it clean but I would say it's one of the cleaner options. It still produces a considerable amount of CO2 into the atmosphere and the process for getting a hold of it probably also has some downfalls to the environment. This procces keeps the envorioment clean and keeps the world more safe.
CO2 destroys the envoroiment and takes the homes of animals and plants. People need to use claener ways to help the enviroment they can do this by useing clean energy sorces, and learn about the history of the energy scources, and how much is used.
Explanation:
This is what I wrote hope it helps
Introduction, Lynx-Snowshoe Hare Relationship, Trophic Cascades, Predator-Prey Dynamics, Ecological Implications, Other Factors, Case Studies, Counterarguments, Future Research, Conclusion, Works Cited.
Introduction: Introduce the topic and present the main claim regarding the impact of reducing lynx population on snowshoe hare, emphasizing the ecological context.
Slide 1: Overview of Lynx-Snowshoe Hare Relationship - Briefly explain the natural predator-prey relationship between lynxes and snowshoe hares, highlighting their ecological interdependence.
Slide 2: Trophic Cascades - Discuss the concept of trophic cascades and how changes in lynx population may influence the snowshoe hare population, considering the broader ecosystem dynamics.
Slide 3: Predator-Prey Dynamics - Explore the dynamics of predator-prey interactions and the potential consequences of reducing lynx predation on snowshoe hares.
Slide 4: Ecological Implications - Examine the potential ecological implications of an increased snowshoe hare population, considering impacts on vegetation, other herbivores, and potential cascading effects.
Slide 5: Other Factors - Discuss additional factors influencing the snowshoe hare population, such as food availability, habitat, and potential mitigating factors affecting the overall outcome.
Slide 6: Case Studies - Present relevant case studies or examples that support the hypothesis, illustrating instances where changes in predator populations affected prey species.
Slide 7: Counterarguments - Address potential counterarguments or alternative explanations for changes in snowshoe hare population, providing a balanced perspective.
Slide 8: Future Research - Propose areas for future research and exploration, suggesting ways to enhance our understanding of predator-prey relationships and ecological dynamics.
Conclusion: Summarize key points, restate the main claim, and emphasize the need for a holistic understanding of ecological systems in wildlife management.
Works Cited: Include a works cited page citing sources used to support the presentation content.
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Soil is made of _____.
Answer:
easy
Explanation:
Soil is made up of a mixture of organic material and minerals.
Because the plants grow on top of the soil and the rocks are found underground, soil is made up of layers.
Actively dividing eukaryote cells pass through a series of stages known collectively as the cell cycle. Match each label to the correct location in the model
Answer:
Please provide a model/diagram.
I obviously cant directly answer the question but in mitotic cellular division and/or mitosis a cell goes through the following stages.
Interphase which consist of G1 phase S phase and G2 phase
Interphase is followed by mitosis/meiosis
MITOSIS consist of four main phases Prophase, Metaphase, Anaphase, and Telophase.
Cytokenisis would then follow MITOSIS resulting in divission down the cleavage furrow formed between Anaphase and Telophase.
Answer:
The euakaryotic cell is considered to be more adanced form of life on the planet, as the scientists believes that many unicellular cells(which are termed as the organelles inside the cell) made a specialized form of network with one another. And this network of cells was then attributed the name of a eukaryotic cell, as many number of eukaryotic cells combined together to form a specialized system or form of a cellular body. But, the eukaryotic cells increased its number and was the entity with the most diverse functions and shapes. But, however the eukaryotic cell had a different way to replicate itself and for that reason the process of mitosis and meiosis takes place inside the system created by the eukaryotic cells.
Mitosis: During, the process of mitosis the different cells undergo the replication process in such a way that each cells are tend to be divided into the equal number of halves, as these new born cells contain the same number of chromosomes(genetic material) same as the parent cells have. While, the resemble the parent cells in there genotypes.
Meiosis: While, the meiosis is more concerned with the half number of chromosomes inside each daughter cells that are produced after the parents cells are gone through the process of meiosis. Having the half number of chromosomes does not mean that it would posses some sort of abnormalities but the genetic materials gets there level of stability after some time, and more over going through a process of growth and development.
How would this disease most likely impact the grassland ecosystem?
Answer:
Explanation:
Characterized by their flat, open pastures and abundance of nutrient-rich soil, more than a quarter of the world’s land—and about 70 percent of its agricultural land—is covered by grasslands.
This biome is home to a range of flora and fauna, which add to its resilience against natural disasters such as droughts or wildfires. In fact, native grassland plants have adapted to extreme weather conditions to such an extent that savannas, a subset of grasslands found in Africa, Australia, South America, and India, require seasonal droughts and wildfires to maintain biodiversity
But this resiliency does not equate to immunity.
Grasslands are threatened by habitat loss, which can be caused by human actions, such as unsustainable agricultural practices, overgrazing, and crop clearing. Almost half of all temperate grasslands and 16 percent of tropical grasslands have been converted to agricultural or industrial uses and only one percent of the original tallgrass prairie exists today.
How does recycling runoff reduce agricultural pollution?
Answer:
Agricultural runoff can be described as the waste such as fertilizers, pesticides, herbicides, soil waste etc which gets drained off into rivers with water. Agricultural runoff might occur due to irrigation, abundant rain etc.
If the agricultural run-off is recycled, then water will be less polluted. The water will therefore be not harmful for usage by the plants. The run-off can be diagnosed and essential minerals required by the plants can be recycled.
The recycling of the agricultural run off will make the drained water less contaminated for the animals living in the lakes or ponds.
Answer:
It keeps chemicals from entering the water shed.
Explanation:
Watershed are connected to water basins, rivers and ponds and therefore if its protected from being polluted through recycling runoff, it reduces polluting the waters and therefore agricultural pollution is reduces.
what is the volume of an object that is 12 cm long, 100 mm wide and 0.001 m high
The volume of an object that is 12 cm long, 100 mm wide and 0.001 m high is 0.00012 cubic meters.
To calculate volume of an object:
Height = 0.001 m
Length = 12 cm = 0.12 m
Width = 100 mm = 0.1 m
Volume refers to amount of space that an object occupies.
The units for volume will depend upon the units of the dimensions of the object. For example if the length, width, and height are all in meters, then the volume will be in cubic meters.
Multiply the length, width, and height to get the volume:
Volume = Length × width × height
= 0.12 m x 0.1 m x 0.001 m
= 0.00012 cubic meters
Therefore, the volume of the object is 0.000212 cubic meters.
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Humans have had a pattern of _____________ growth.
Answer:
change in body proportions throughout development from birth to adult
Explanation:
Answer:
Increase in size and weight
Explanation:
Which ecosystems do NOT have
symbiotic relationships?
A. deserts
B. All ecosystems contain symbiotic relationships.
C tropical rainforests
Answer:
The correct option is B. All ecosystems contain symbiotic relationships.
Explanation:
Symbiotic relationship can be described as a relationship between the organisms of two species. It might be harmful for both the species, beneficial for both the species or just beneficial to one of the species. All ecosystems will have some kind of symbiotic relationships. Hence, option B is correct.
Other options like Option A is false because the desert ecosystem does has symbiotic relationships. For example, the Gobi woodpecker lives on a cactus in a desert. In return it eats the insects and other parasites which harm the cactus.
The correct answer is A. deserts.
Symbiotic relationships are interactions between two or more organisms from different species that live in close physical association with each other. These relationships can be beneficial to one or both organisms (mutualism), beneficial to one while having no effect on the other (commensalism), or beneficial to one while being harmful to the other (parasitism).
In ecosystems, symbiotic relationships are widespread and can be found in virtually all environments where life exists. This includes deserts, tropical rainforests, coral reefs, tundras, and even human bodies, where millions of bacteria form symbiotic relationships with their host.
Option B states that all ecosystems contain symbiotic relationships, which is generally true. However, the question asks for an option that does NOT have symbiotic relationships, which means we are looking for an exception to this general rule.
Deserts (option A) are often characterized by harsh conditions, including extreme temperatures, low precipitation, and limited resources. While it is true that deserts can have fewer visible examples of symbiotic relationships due to the sparse distribution of organisms, symbiotic relationships do still exist in desert ecosystems. For example, cacti may have mutualistic relationships with certain species of birds or insects that nest in them or help with pollination.
Tropical rainforests (option C) are known for their high biodiversity and complex web of interactions, including a multitude of symbiotic relationships.
Therefore, the most accurate answer to the question is that all ecosystems, including deserts, contain symbiotic relationships to some extent. However, if we were to identify an ecosystem with fewer symbiotic relationships compared to others, deserts might be considered due to their extreme conditions and lower organism density. It's important to note that the question's premise is somewhat flawed because symbiotic relationships, even if less visible or less diverse, are present in all ecosystems.
(HELP QUICK!!) Earth's atmosphere was primarily composed of _______ until the Proterozoic era
A. Oxygen
B. Nitrogen
C. Methane
D. Carbon Dioxide
Answer:
methane
Explanation:
Answer:
C. Methane is the answer
what do the similarities between the skeletal structures of these three species most likely indicate about their evolutionary history
These three species are distantly related and share a common ancestor
Final answer:
Skeletal similarities among species indicate a common evolutionary past, and these are called homologous structures. Complex anatomical structures are unlikely to evolve independently in the exact same way, just as it's improbable for people to invent identical complex machines separately.
Explanation:
The similarities between the skeletal structures of different species suggest a common evolutionary history. For example, the similar bone arrangements in a bat's wings, a dolphin's flippers, and a horse's legs are not random; they are indicative of a shared ancestry. These structures are known as homologous structures, which are anatomical similarities due to descent from a common ancestor.
Homologous structures provide evidence for evolution because it is highly improbable that complex features, like a mammalian limb with all its specific bones and muscle attachments, would independently evolve in the exact same way. Just as it would be improbable for two people from different countries to independently invent a car with the same design without prior knowledge or influence, it is unlikely for the complex structures of different species to have arisen separately rather than from a common ancestor.
Which of the components in blood helps the blood to recognise and destroy microorganisms?
Answer:
white blood cells or WBCs
Explanation:
White blood cells are the cells that fight off infection and anyother thing that enters your blood stream
As pressure on a gas is increased the volume of the gas decreases. Is that theory, law, or hypothesis?
Answer:
Is a theory. See the explanation below, please.
Explanation:
This phenomenon is explained by the Boyle-Mariotte Law, where as the pressure of a gas increases, the volume decreases and vice versa, all at a constant temperature (they are inversely proportional magnitudes). This law is explained by the following formula:
Initial P x Initial V = P Final x Final V
What happens as electrons in the electron transport chain release their energy?
Hydrogen ions (H) are formed from water.
ADP is converted to ATP.
Proteins are converted to ATP.
Glucose is converted to ATP.
Answer:
ADP converts to ATP
Explanation:
An electron transport chain is a series of complexes that transfer electrons from electron carriers such as NADH and NADPH to electron acceptors, such as oxygen, through reduction and oxidation reactions that occur simultaneously. It couples the transfer of protons (hydrogen ions) across a membrane which enhances synthesis of ATP from ADP and inorganic phosphate.
hope this helps :)
Explain how the boiling of water and the cooling of water vapor is a reversible reaction. With hydrogen bonds between water molecules.
Answer:
When water is boiled water molecules changed into vapors when these vapors condensed water changed into liquid.
So it is reversible reaction.
Explanation:
Water molecules are connected through the hydrogen bonding. When water is boiled the kinetic energy of water molecules increased and point is reached when kinetic energy is so high and water molecules overcome the external pressure and escape from the surface. Thus water molecules convert into vapors.
In case of cooling process extra energy is released. Vapors becomes cooled and kinetic energy decreased vapors are changed into liquid state.
When water is boiled water molecules changed into vapors when these vapors condensed water changed into liquid.
So it is reversible reaction.
Answer:
This is a reversible reaction because you can boil the water to make water vapor and when the water vapor is cooled down, it ill turn back into its original liquid, water. This occurs because of hydrogen bonding between water molecules.
Hope this helps a bit!
Which of these landforms is created due to deposition?
A. Cirque
B. Fjord
C. Horn
D. Sandbars
Sandbars is created due to deposition.
Explanation:
Sandbars are long, fine deposit below the surface of water. Also they are termed as the offshore bar, they are sometimes inundated, sometimes exposed ridges of sand, which is made by waves offshore from beach. Creation of the swirling turbulence of the waves which breaks the beach and digs a through in the sandy bottom. The top portion of the bar remains in water level by the plunge by the waves breaking over it.
What ecological pyramid is "The rule of 10" associated with?
Answer:
'The rule of 10' is associated with the pyramids of quantifying energy flow.
Only a small amount of energy is transferred from one trophic level to another. Most of the energy is lost in the form of heat. Hence, we quantify that about 10% of energy travels from one trophic level to another.
Let's say the producers have 100% energy. The primary consumers will only receive 10% of this energy. The secondary consumers will receive 1% energy from the primary consumers. The tertiary consumers will receive 0.1% energy. This is known as the rule of 10.
2 Points
A protein channel in a hydrogen ion pump is shown below.
What would happen if there were no Htion concentration difference when the
channel opened?
Explanation:
H+ pumps use energy to move H+ across membranes...
the H+ ion gradient must favor the flow of electrons into the cellthere must be a concentration gradientWith no concentration difference, a gradient cannot be established. Thus, there is no movement of H+
Further Explanation:
For example, for H pumps in the inner membrane of the mitochondria like ATPase...
Hydrogen atoms contain 1 proton and 1 electron while being devoid of neutrons. When they lose their electron they form an ion or H+, a particle carrying a unit of positive charge. At the mitochondrial membrane, the outer membrane freely allows for the passage of H+ while the inner membrane does not. Mitochondria require H+ concentration gradients to produce ATP; i.e. high concentrations of of H+ in the intermembrane space and low H+ within the mitochondrial matrix.
The H+ being pumped outside the mitochondrial matrix leads to increased H+ within the intermembrane space, due to its high permeability. This forms a gradient where there is a differential in the number of protons on either side of the membrane the protons flow or re-enter the matrix through the enzyme ATP synthase, which makes the energy storage molecules of ATP from the reduction of ADP and inorganic phosphate, Pi.
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Final answer:
In the absence of a hydrogen ion concentration difference, the ATP synthase mechanism would not operate, as there is no gradient to drive protons through it, leading to a halt in ATP production.
Explanation:
If there were no hydrogen ion concentration difference when the protein channel in a hydrogen ion pump opened, the driving force for the movement of hydrogen ions (protons) through the channel would be absent. In the mitochondria, an integral membrane protein known as ATP synthase harnesses the potential energy of the hydrogen ion gradient to produce ATP. ATP synthase acts like a generator, where the movement of hydrogen ions through it, down their electrochemical gradient, turns part of the molecular machine facilitating the phosphorylation of ADP to form ATP.
Without a concentration difference, there would be no gradient to drive this process, and as a result, the production of ATP by chemiosmosis would halt. The normal flow of hydrogen ions from higher to lower concentration through the ATP synthase is crucial for this energy conversion process.
The DNA sequence is a code with instruction to assemble _______.
The DNA sequence is a code with instruction to assemble amino acids which then form proteins.
What is DNA?
DNA is a hereditary material which is present in human beings as well as all other living organisms. Every cell which is present in an organism's body has DNA which is the same. Most of the DNA is situated in the cell's nucleus and small amount of it can be found in the cell's mitochondria as well.
Information which is stored in DNA is stored as codes made up of four chemical bases namely, adenine, thymine , cytosine and guanine.Human DNA consists of 3 billion bases .The order of the bases determines information which is required for building and maintaining an organism.
DNA bases are capable of pairing up with each other. Adenine pairs with thymine and guanine pairs up with cytosine .Each base is also attached to a sugar molecule and a phosphate group. A base, phosphate sugar are together called as nucleotides.
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