Answer:
Because that molecules are moving against a concentration gradient and they can not freely pass trough the membrane.
Explanation:
Cell membranes are constituded by lipid bilayers with an hidrophobic nature. This means that water or molecules disolved in water can not freely pass the membrane. All these molecules are in a bigger concentration outside the cell, so the transport inside cells will be against a concentration gradient and this type of transport requieres energy.
Some molecules need help to move through the cell membrane in the form of energy because transport occurs against the concentration gradient and, therefore, the molecules require an energy supply.
The transport in cells is carried out through their membrane by different mechanisms, in order to enter nutrients and eliminate waste.
Many molecules can pass through the membrane without difficulty, but there are others that, due to their composition, it is not easy to do so and therefore require an energy supply.
For this there is the active transport of molecules, it requires energy to be carried out, since it is a type of movement where molecules go against the concentration gradient (from a place of lower concentration to one of higher concentration) and it is carried out by means of pumps, a clear example is the pump that transports sodium and potassium.
If the cells were unable to carry out this transport, the organism would not carry out its vital activities.
Therefore, we can conclude that some molecules need energy to move across a cell membrane because they go against the concentration gradient.
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What molecule that is created during photosynthesis provides energy for cellular processes?
A)ATP
B)chlorophyll
C)oxygen
D)glucose
Answer:
(D) Glucose.
Explanation
I took the test for k12 and the answer is D
Glucose molecule that is created during photosynthesis provides energy for cellular processes.
What is photosynthesis?The process by which plants convert carbon dioxide, water, and sunshine into oxygen and sugar-based energy is known as photosynthesis.
Photosynthesis is essential to most life on Earth. Plants, algae, and some types of bacteria carry out the process by capturing solar energy to create oxygen and chemical energy stored in glucose (a sugar). herbivores get this energy from consuming plants, and carnivores get it from eating herbivores.
Plants absorb water and carbon dioxide from the soil and atmosphere during photosynthesis. Water is oxidized, which means it loses electrons, while carbon dioxide is reduced, which means it receives electrons, inside the plant cell.
Therefore, Glucose molecule that is created during photosynthesis provides energy for cellular processes.
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Select the correct answer from each drop-down menu.
The genetic information that is passed from a parent to its offspring is found in molecules. Segments of these molecules, known as genes, code for the production of , which cause specific to be expressed.
The genetic information passed from parent to offspring is found in genes, which are segments of the molecule DNA. Genes code for the production of proteins that cause specific traits to be expressed.
Explanation:The genetic information that is passed from a parent to its offspring is found in molecules called genes. These genes are segments of a molecule known as deoxyribonucleic acid (DNA). The genes code for the production of proteins, which cause specific traits to be expressed.
Match the following terms and definitions.
1. transcription
2. translation
3. monohybrid cross
4. incomplete dominance
5. sex-linked genes
A. The transfer of genetic code from DNA to an RNA molecule
B. Genes that are carried on the X chromosome
C. When genes are neither dominant nor recessive and display a blending of traits in the phenotype
D. Converting the genetic code into the language of proteins
E. The breeding of two organisms which differ in a single trait
Answer: 1. transcription = A. The transfer of genetic code from DNA to an RNA molecule.
2. translation = D. Converting the genetic code into the language of proteins.
3. monohybrid cross = The breeding of two organisms which differ in a single trait
4. incomplete dominance = C. When genes are neither dominant nor recessive and display a blending of traits in the phenotype
5. sex-linked genes = Genes that are carried on the X chromosome
Explanation: 1. transcription = A. The transfer of genetic code from DNA to an RNA molecule.
2. translation = D. Converting the genetic code into the language of proteins.
3. monohybrid cross = The breeding of two organisms which differ in a single trait
4. incomplete dominance = C. When genes are neither dominant nor recessive and display a blending of traits in the phenotype
5. sex-linked genes = Genes that are carried on the X chromosome.
according to each definition we can finds the answer on each genetic process
Is making a sandwich a chemical or physical change?
Please tell me why you chose this answer too!
Answer: It is a physical change.
Explanation:
Even though they make sand which they are still meat bread and cheese. The reactants stay as there ware even though they have taken a different form. It is like boiling water or freezing it. They look different but the reactants stay the same.
Answer:
Physical Change
Explanation:
A physical change is a type of change in which the form of matter is altered but one substance is not transformed into another. Chemical changes occur when a substance combines with another to form a new substance
I need help please help me?
Genes A, B, C, and D are located on the same chromosome. The recombination frequencies (RF) are as follows:
Relationship RF
B - D 14%
C - D 12%
A - D 6%
B - C 2%
A - B 8%
What is the order of the genes on the chromosome?
Choose 1 answer:
Choose 1 answer:
(Choice A)
A
BCAD
(Choice B)
B
DBAC
(Choice C)
C
CBAD
(Choice D)
D
ACBD
Answer:
choice a BCAD
Explanation:
RIGHT ON EDGE 2021
Genes are small, round structures present in the chromosomes. The order of the genes on the chromosome is option A, BCAD.
What are genes?Genes are the basic unit of heredity.
DNA is the material that makes up genes.
Some genes serve as blueprints for the production of proteins.
There are hundreds to more than millions of genes are present in DNA.
Thus, the correct order of the genes is option A, BCAD.
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Can you describe three characteristics of life that Archaea bacteria have?
Answer:
The characteristics of life that Archaea bacteria have are :
cell walls
fatty acids
protein synthesis
metabolism
Explanation:
Cell walls: The archaea bacteria have cell wall but unlike the other bacteria, it's cell wall is not made up of peptidoglycan.
Fatty Acids : In archaea, fatty acids are connected to glycerol by ester bonds.
Protein synthesis: Some features for the synthesis of proteins in archaea bacteria are similar to the synthesis of proteins in eukaryotes.
Metabolism: There are many kinds of metabolism that occur only in the archaea bacteria and other forms of bacteria. However, Methanogenesis is a form of metabolism that occurs only in archaea.
Answer:
The picture of Archaea bacteria in the video showed that the organism was made of a single cell, and it had a defined border. Scientists also know that it reproduces by passing on its genetic information because there is evidence of Archaea’s genes in our DNA today.
Explanation:
Edmentum
What’s the largest volcano in the solar system
Answer:
olympus mons
Explanation:
at 21.9km the enormous sheild volcano
Answer: Olympus Mons
Explanation: The largest volcano in the solar system is Olympus Mons on Mars. Olympus Mons is an enormous shield volcano of 21.9 km. A shield volcano is a broad domed volcano with gentle sloping sides. These sides come from the eruption of fluid basaltic lava.
Which of the following describes the growth curve?
exponential because the graph is an exponential function that continuously increases
Which event occurs in the large intestine?
A.) Bile is released.
B.) Chyme is absorbed.
C.) Starch is digested.
D.) Water is recovered.
Answer:
D.) Water is recovered.
Explanation:
Large intestine is a part of alimentary canal. The food gets digested by the time it reaches here. So large intestine has no role in digestion. Its main function is to absorb water from the remaining undigested food matter so that solid stool can be produced and wastes be eliminated from the body. The absorbed water is returned to the body and reutilized.
Large intestine has a lining of mucosa which has tiny indentations called as crypts of Lieberkühn. They have many glands and goblets cells that are involved in absorption of fluids and secretion.
What is free nitrogen?
A. nitrogen that is ready for plants to use
B. nitrogen that has been fixed by bacteria
C. nitrogen that cannot be used by organisms
D. nitrogen that is returned to the soil by decomposers
Answer:
Nitrogen thet cannot be used by organisms. C.
Explanation:
Free nitrogen is simply molecular nitrogen (N2). Nitrogen, in its molecular form, consists of two nitrogen atoms bound together with a tripple bond. Because it is very stable, N2 is typically nonreactive, and takes a lot of energy to break them apart. Among these are the amino acids necessary for life to begin and which are the building blocks DNA is made from. Basically, any nitrogen that is in an organic compound is considered “fixed” nitrogen and N2 is considered to be “free” nitrogen
Free nitrogen refers to diatomic nitrogen found in the atmosphere. It's not directly usable by most organisms as they lack the necessary enzymes to convert it into ammonia. Processes like nitrogen fixation by certain bacteria can convert it into a usable form and it can be returned to the atmosphere through denitrification.
Explanation:Free nitrogen, also known as atmospheric nitrogen, is nitrogen in its diatomic form (N2) found in the atmosphere. It is the largest pool of nitrogen in terrestrial ecosystems. However, this nitrogen is not readily available for use by most organisms as they lack the necessary enzymes to convert it into a usable form.
Nitrogen fixation is a biological process whereby certain prokaryotes, such as soil bacteria or cyanobacteria, convert atmospheric nitrogen into ammonia (NH3). This fixation contributes to around 65% of the nitrogen used in agriculture. For example, soil bacteria have a symbiotic relationship with leguminous plants, engaging in nitrogen fixation to convert free nitrogen into a form that is accessible to the plant.
Additionally, nitrogen can be converted back into its atmospheric form by soil bacteria in a process called denitrification where nitrates are converted into nitrogen gas, allowing it to re-enter the atmosphere.
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The growing season of plants is primarily influenced by
Answer:
The growing season of plants is primarily influenced by temperature.
Explanation:
The temperature of their environment, along with their species-specific temperature requirements have major impacts on plant growth. Plants usually grow more quickly with an increase in their environmental temperatures.
However, extreme temperatures (beyond their maximum and minimum) can slow growth. This determines their corresponding growth season, which includes: a seasonal interval between spring and autumn; or an average number of days above the minimum temperature. Every plant species has a specific range of temperatures:
An optimal temperature- for the best possible growthA Minimum temperature- (or basal temp) the lowest temperature capable of triggering growthA Maximum temperature- the highest tolerable temperature capable of triggering growthE.g. Wheat's growing season requires sustained temperatures above 5°C.
Patients forgetting to take their antibiotics are not the sole cause of antibiotic
resistance. Explain at least two other possible causes of the development of
antibiotic resistant bacteria.
Answer: Taking antibiotics to often and mutation in bacterial gene
Explanation:
The other two possible reasons that can cause the antibiotic resistant gene in the body is the taking antibiotics too often.
The antibiotics are taken too often that the body becomes resistant and the bacterial species are not killed by the antibiotics.
The second cause is that the bacteria might mutate and becomes resistant to the bacterial genome. In this case the antibiotics does not affects the bacterial species.
According to the text's definition, nutrition is "the proper supply of nutrients essential for": growth reproduction circulation repair immunity energy intelligence
Answer:
1. Growth
2. Reproduction
3.Repair
4. Immunity
5. Energy
7. What is the pH of a very acidic solution?
Answer:0.0
Explanation:just search the ph scale 0 is very acid, 7 is neutral and 14 is very acaline
The cells primary site of ATP energy production is the:
Answer:
mitochondria
Explanation:
What effect will dissolving salt in a solution have?
The salt most likely will raise the boiling and freezing points of the solution slightly.
To date a sedimentary rock layer between two igneous rock units, gologists use
radiometric dating and assume that the sedimentary layer's age _____.
Final answer:
Geologists use radiometric dating of igneous rocks above and below a sedimentary layer to bracket their age. Other methods, such as biostratigraphic correlation using fossils, also support the dating of the sedimentary layers.
Explanation:
To date a sedimentary rock layer between two igneous rock units, geologists use radiometric dating and assume that the sedimentary layer's age is bracketed by the ages of the igneous rocks above and below it. Using radiometric dating, they measure the decay of radioactive materials within the igneous rocks to determine their ages. Since sedimentary rocks can't be dated as precisely using radiometric dating—because this method dates the time of crystallization of minerals, not the time of sedimentation—geologists apply the principles of relative dating. These principles include the law of superposition, which states that in undisturbed stratigraphic sequences, the sedimentary layer in question must be younger than the rock beneath it and older than the rock above it.
Geologists use other methods such as examining fossil content for biostratigraphic correlation to help support the dating of the sedimentary layer. Fossils can be particularly useful in correlating sedimentary rock layers across different areas when they contain the same species known to have lived during a specific period.
WILL MARK BRAINLIEST List three ways thinking like a scientist can help you in everyday life when doing things like shopping for a new bike, baking a cake, or reading a magazine.
Answer:
Scientific thinking helps us to better evaluate and understand the process behind all day today activities and thus helps us doing all activities in a right manner.
Explanation:
Scientific thinking helps us to better evaluate and understand the process behind all day today activities -
a) for example - baking a cake involves the understanding of effect of baking soda and thus help us evaluate the appropriate quantity of baking soda that should be used for baking.
b) When we read magazines we must maintain an adequate distance between magazine and eye for effortless reading as per the principles of optics.
c) when we shop for a new bike we must have an understanding of mileage, engine performance, engine capacity, Tyre quality etc to make a right choice.
2. The Agawam High School band is playing some lively marches while the coaches are giving pep talks to their respective football squads. Although it is September, it is unseasonably hot (88°F/31°C) and the band uniforms are wool. Suddenly, Ryan the tuba player becomes light-headed and faints. Explain his fainting in terms of vascular events.
Answer:
the tuba player is over heated
Explanation:
wool mostly conserves body heat. especially in warm weather...
What fats are called saturated?
A). fats that contain no double bonds in fatty acid chains
B). fats that have some double bonds in fatty acid chains
C). fats that have triple bonds in fatty acid chains
D). none of the above
Answer:
A
Explanation:
Fats are made up of several carbon chains – of different lengths- per molecule. An example is triglyceride with 3 fatty acids connected to glycerol. When several chains without double bonds are brought together – they attract each other tightly through the numerous hydrogen bonds they share between the chains. Presence of double bonds in the chains form kinks within the chains and disrupt the hydrogen bonds shared between chains. It is therefore common that solid fats are saturated fats because they bond so tightly they require higher temperatures to get to meting point as compared to unsaturated fats.
56:18
Which uses of iron are due to its chemical properties? Check all that apply.
producing colored sparks in fireworks
changing from liquid to gas at 2,862°C
rusting in the presence of water and oxygen
changing from solid to liquid if heated to 1,538°C
conducting electricity and heat
Answer:
A producing colored sparks in fireworks
C rusting in the presence of water and oxygen
these are the correct answers
Explanation:
A property that does not bring any change in chemical composition of a substance are known as physical properties.
For example, shape, size, mass, volume, density, etc of a substance are all physical properties.
And, a property that changes chemical composition of a substance is known as chemical property.
For example, precipitation, reactivity, toxicity etc are chemical property.
Producing colored sparks in fireworks, and rusting in the presence of water and oxygen depicts chemical properties.
Thus, we can conclude that following uses of iron are due to its chemical properties.
producing colored sparks in fireworks.rusting in the presence of water and oxygen.How are the starting reactants and the products of photosynthesis and cellular
respiration related?
Final answer:
Photosynthesis and cellular respiration are interlinked processes where the reactants of one are the products of the other. Photosynthesis uses carbon dioxide and water to produce glucose and oxygen, while cellular respiration uses glucose and oxygen to release energy and produce carbon dioxide and water. They form a cycle essential for life on Earth.
Explanation:
The starting reactants and the products of photosynthesis and cellular respiration are intimately related, reflecting a remarkable symmetry between the two processes in the carbon cycle. Photosynthesis, which occurs in the chloroplasts of plant cells, combines carbon dioxide (CO₂) and water (H₂O) in the presence of sunlight to produce glucose (C₆H₁₂O₆) and oxygen (O₂) as products:
6CO₂ + 6H₂O + light energy → C₆H₁₂O₆ + 6O₂
Cellular respiration, on the other hand, occurs in the mitochondria of all aerobic (oxygen-using) organisms, including plants. This process takes the products of photosynthesis (glucose and oxygen) to produce energy (ATP), along with carbon dioxide and water as products, essentially running the photosynthesis equation in reverse:
C₆H₁₂O₆ + 6O2 → 6CO₂ + 6H₂O + energy (ATP)
These reciprocal relationships demonstrate that the photosynthesis and cellular respiration act as a cycle that continuously recycles carbon dioxide, water, glucose, and oxygen, making them essential to the energy flow and matter cycling in living organisms.
Juan is interested in finding out whether hummingbirds attracted to sunflowers more than others. In what order should one perform the steps of his experiment
Final answer:
To analyze the experiment, Juan should average the number of visits flies make to sprayed vs. control flowers for each flower type across five trials, then compare and contrast these to determine any patterns of attraction. He should also assess if appearance or smell influences the attraction more, and form a conclusion about his hypothesis based on these comparisons.
Explanation:
To analyze the data effectively, Juan will need to determine the average number of visits that flies make to sprayed and unsprayed/control flowers for each type of flower. By doing this for both flower types over the course of five trials, he can compare and contrast these averages to draw conclusions. Specifically, Juan should look for patterns of attraction to sprayed flowers compared to control flowers.
For the second flower type, Juan should repeat the experiment, ensuring that it's a different species normally pollinated by bees. After collecting the results of the number of visits by flies to both sprayed and control/unsprayed flowers, Juan should again calculate the averages.
With this data, it's possible to investigate whether appearance or smell has a greater effect on attracting flies, by comparing the averages for both flower types. If there is a significant difference in the average number of visits to one type of flower over another, it could suggest that the flies have a preference that could be due to either appearance, smell, or a combination of both. Finally, Juan should form a conclusion that reflects whether the results support his initial hypothesis.
Final answer:
Juan should design a controlled experiment to test whether hummingbirds prefer sunflowers, collect and analyze data on their visitation habits, and draw conclusions comparing the results to his hypothesis.
Explanation:
To investigate whether hummingbirds are more attracted to sunflowers than other flowers, Juan should follow a systematic approach to experimental design. First, he must define a clear hypothesis detailing his expectation regarding the hummingbirds' attraction to sunflowers in comparison to other flowers. Following this, Juan should establish controlled variables, such as the environment where the sunflowers and other flowers are placed, and ensure that the flowers are the only variable in the experiment that is different.
Once the setup is ready, Juan should observe the number of visits by hummingbirds to the sunflowers and compare these to the number of visits to the control group of flowers. This should be done over multiple trials to ensure the reliability of the results. If the experiment also involves the use of sprayed flowers to test for additional factors like smell, Juan should consider the average number of visits flies made to sprayed flowers over the course of several trials and compare it to the average number of visits to control flowers. He should then analyze whether any potential attractants like scent sprays have a significant impact on the attraction of the hummingbirds or flies to the flowers.
After collecting and analyzing the data, Juan can draw conclusions regarding the preference of hummingbirds for sunflowers over other flower types. This systematic approach allows Juan to determine if his hypothesis is supported by the experimental evidence. Should the evidence not support the hypothesis, he would then need to explore further to understand the influencing factors in the hummingbirds' flower preference.
Is it a or d?
B and c don’t make sense to me
Answer:
D. An observation is based on evidence, an inference is not.
Explanation:
When you infer something, you're basically guessing at it, while an observation is something that you can see and prove.
TWO METHODS USED TO CLEAN UP THE CONTAMINATION OF A POLLUTED ECOSYSTEM ARE DISPERSANTS AND BIOENGINEERED BACTERIA
Chromatography and filtration if that's the answer you're looking for if not then don't heart this answer
The sequence of _____________ produces a new copy of an organism's genetic information.
Answer:
DNA Replication
Explanation:
DNA Replication is the process of what produces a new copy of an organism's genetic information, which is passed on to a new cell.
Final answer:
DNA replication is the biological process that produces a new copy of an organism's genetic information, crucial for growth, reproduction, and genetic inheritance. Mutations can alter DNA sequence, influencing inherited traits. Cloning and genetic engineering also rely on DNA replication for producing multiple copies of genetic material.
Explanation:
The sequence of DNA replication produces a new copy of an organism's genetic information. DNA replication is a critical biological process that ensures each new cell receives a complete copy of the genome. This process allows for genetic information to be passed down from generation to generation and ensures the faithful transmission of genetic traits. DNA replication is necessary for both growth and reproduction of organisms. In multicellular organisms, it begins with the division of a single cell, often the fertilized egg, and every time a cell divides, its DNA is duplicated so that the daughter cells have all the necessary information. Mutations can occur spontaneously or due to external factors, which can change the nucleotide sequence and lead to inherited differences in offspring.
In the context of genetic engineering and cloning, DNA replication is also employed to create numerous copies of specific genes or DNA sequences, which are essential for advanced research and the development of new genetic modifications. These methods often make use of plasmids or viruses to amplify the desired DNA sequences within host cells.
A carbon atom can bond with other atoms in a variety of ways. Wich set of bonds would a typical carbon atom in a compound
Answer:
A carbon atom can form up to four covalent bonds as one carbon atom has four valence electrons (in outermost shell). It is a fact that the number of valence electrons in a atom determines the number of covalent bonds it will form. Thus, each electron in carbon atom is used to form four covalent bonds with various four atoms.
Explanation:
A bond between a carbon and hydrogen atom is a non-polar covalent bond. The non-polar covalent bond are the bonds between two atoms which share equal number of electron(s) with each other. Example: as in case of methane, where one carbon atom shares its 4 outer valence electrons with four hydrogens by sharing equal number of electron.
In contrast, polar covalant bond are the bonds between two atoms which share unequal number of electron(s) with each other. Thus these bonds are partially ionic.
A cell makes and secretes a certain protein. Explain where it is made, how it is secreted from
the cell, and what kind of transport is used.
Answer:
The cell's proteins are first manufactured in the ribosomes. The polypeptide chains then enter the lumen of the Rough Endoplasmic Reticulum where they are properly folded with the help of chaperones and modified to achieve their desired shape which relates to their function. The proteins also undergo quality control in the RER, These proteins are then transported by vesicles, budding out of the trans side of the RER, and transported to the cis side of the Golgi apparatus. In the Golgi bodies, the proteins undergo further post-translational modification and packaging. Vesicles carrying the final proteins then bud off of the trans side of the Golgi apparatus and transport the protein to the cell membrane where they secreted them.
The protein is made in the ribosome organelle, secreted by transport vesicles using a type of transport called exocytosis.
Proteins are products of gene expression, which consists of transcription and translation of genetic material to produce them.The translation process, which occurs in the ribosomes, produce amino acids sequence that eventually become proteins. Ribosomes are site of protein synthesis in a cell. The proteins are secreted to target locations via the aid of structures called transport vesicles. Transport vesicles, carrying proteins, attach themselves to the cell membrane and release their protein content via the process of exocytosis. Therefore, protein is made in the ribosome organelle, secreted by transport vesicles using a type of transport called exocytosis.Learn more at: https://brainly.com/question/11660031?referrer=searchResults
You are using the microscope the ocular lens has a magnification of X10 and you have
the objective lens is a magnification of X40
What is the total magnification of what you are looking at?
A 40
B 400
C 4000
Answer:
B. x400
Explanation:
You simply times the objective lens by the ocular lens in order to find out the total magnification.
In short:
Total Magnification = Ocular Lens Magnification x Objective Lens Magnification
PLZ HELP ME!!! Read the passage "Easter Island Palm." Choose the answer below that best fits the problem on Easter Island.
In the 1400s, the Easter Island palm became extinct due to overharvesting. Reproduction was nearly impossible because islanders introduced rats when they first arrived. These rats ate the Easter Island palm seeds, preventing the Easter Island palm from flourishing. With the disappearance of the palm, the islanders could no longer build the boats they needed for fishing.
A.the erosion of topsoil, leading to decreased crop production
B.the loss of pollinating birds to the island, resulting in a decrease in the variety of plant life on the island
C.an increase in the islanders' consumption of land and migratory birds, resulting in a decrease in the bird population
D.a decrease in the temperature, leading to decreased biodiversity
Answer:
do u go to gca???
Explanation:
Answer:
Explanation:
Its D
:)