Answer:
50%
Explanation:
Which sentences describe the differences between photosynthesis and cellular respiration?
Check all that apply.
(1)Cellular respiration uses oxygen as a reactant and photosynthesis does not.
(2)Cellular respiration produces glucose and photosynthesis does not.
(3)Cellular respiration produces excess ATP and photosynthesis does not.
(4)Cellular respiration stores energy from the Sun in glucose molecules and photosynthesis does not.
(5)Cellular respiration is performed by consumers and photosynthesis is not
(6)Cellular respiration releases energy from glucose molecules and photosynthesis does not
Which sentences describe the differences between photosynthesis and cellular respiration?
Check all that apply.
Cellular respiration uses oxygen as a reactant and photosynthesis does not.
x Cellular respiration produces glucose and photosynthesis does not.
Cellular respiration produces excess ATP and photosynthesis does not.
x Cellular respiration stores energy from the Sun in glucose molecules and photosynthesis does not.
Cellular respiration is performed by consumers and photosynthesis is not.
Cellular respiration releases energy from glucose molecules and photosynthesis does not.
Explanation:
The differences between photosynthesis and cellular respiration include the use of oxygen as 1) a reactant in cellular respiration,5) the role of consumers in cellular respiration, and 6) the release of energy from glucose in cellular respiration.
The differences between photosynthesis and cellular respiration are fundamental to understanding how life processes energy. The correct sentences that describe these differences are:
(1) Cellular respiration uses oxygen as a reactant and photosynthesis does not.(5) Cellular respiration is performed by consumers and photosynthesis is not.(6) Cellular respiration releases energy from glucose molecules and photosynthesis does not.Photosynthesis is the process by which plants, algae, and some bacteria convert light energy from the sun into chemical energy in the form of glucose, while releasing oxygen as a byproduct. In contrast, cellular respiration is the process by which living organisms, including both producers like plants and consumers like animals, release energy stored in glucose to produce ATP, which is used for cellular work, and this process requires oxygen while producing carbon dioxide and water as byproducts.
Compare the surface area to volume ratios of the three spheres representing cells. Which of the three cells if any has the greatest surface area to volume ratio
Answer:
The cell with radius 1
Explanation:
The cell with radius 1 has the greatest surface area to volume ratio.
The spherical cell with a surface area-to-volume ratio of approximately 1.2 is more efficient at exchanging nutrients and wastes compared to the cubed cell, which has a ratio of approximately 0.86, due to having a higher surface area relative to its volume.
Explanation:To determine which cell exchanges nutrients and wastes with its environment more efficiently, we compare the surface area-to-volume ratios of a spherical cell to a cubed cell. A spherical cell with a diameter of 5 µm (meaning a radius of 2.5 µm) has a surface area of 4π(2.5µm)2 and a volume of (4/3)π(2.5µm)3. Calculating these, we find a surface area of approximately 78.54 µm2 and a volume of approximately 65.45 µm3, resulting in a surface area-to-volume ratio of roughly 1.2.
In contrast, a cube-shaped cell with a side length of 7µm has a surface area of 6 x (7µm)2 and a volume of (7µm)3. The resulting surface area is 294 µm2, and the volume is 343 µm3, leading to a surface area-to-volume ratio of approximately 0.86.
Therefore, the spherical cell has a higher surface area-to-volume ratio and is more efficient in terms of exchanging nutrients and wastes compared to the cubed cell. This is because a larger surface area-to-volume ratio allows for more surface area per unit of volume for diffusion to occur.
A carrier is someone whoA. intentionally and maliciously violates contamination standards. B. calls in sick to work due to an upper respiratory illness. C. transmits a pathogen to others without ever getting sick. D. models correct behavior for food handlers.
Answer:
C. transmits a pathogen to others without ever getting sick
Explanation:
A disease carrier is an individual who is most times asymptomatic (show no sign or symptom) of a particular disease but has the potential to transmit to other people. A carrier is a person who is infected with a pathogen, but show no sign of the disease caused by the pathogen, because such individual is not affected by the pathogen, such person can be unaware and transmit to others; and on some occasions, they can show symptoms much later.
For example, some people are carriers of herpes virus, but show no symptoms and can transmit to others.
Answer:
Option c
Explanation:
A carrier in biology is referred to as someone who is able to pass on a pathogen or maybe a disease to others and does not get sick or get affected. A-symptomatic carriers, although they may be unaffected by the pathogen, they can still transfer the pathogen to others. A-symptomatic carriers can be observed in people infected with influenzas, tuberculosis, and HIV.
area of low pressure where air masses meet and rise
Answer:
It is called Cyclones.
Which is an example of incomplete dominance?
Answer:
B
Explanation:
Think of incomplete dominance of a mixture. Lets say you have a red and a white rose. They would be combined to create the color pink. Same in this situation. A white and black cat would mix to create a grey cat.
Answer:
it's Bor c
cause D that means they got the color from one parent
A they get one of the color from one pran't
cause the only one who make real Sense
The ________ of the mitochondrion contains large-diameter pores that are permeable to ions and small organic molecules such as pyruvic acid. The ________ of the mitochondrion contains large-diameter pores that are permeable to ions and small organic molecules such as pyruvic acid. plasma membrane matrix inner membrane cristae outer membrane
Answer:
Outer membrane.
Explanation:
The outer membrane of mitochondria is the layer of double phospholipid and it is the mitochondrion gateway which separate it from the other cellular organelles present in the cytoplasm of the cell. The outer membrane have large diameter pores and due to these large pores, it is selectively permeable to ions and small organic molecules like pyruvic acid.
Sustained muscle contraction without relaxation between successive stimuli is called
Answer:
Sustained muscle contraction without relaxation between successive stimuli is called Tetanus
Explanation:
Tetanus is a bacterial infectian that is characterized by sustained muscle contraction without relaxation between successive stimuli. It usually starts with spams in some muscles. The responsible bacteria is called Clostridium tetani. It can be prevented with vaccination. There are different treatment procedures regarding the symptoms you may have.
The state of a muscle continuing to contract without relaxation between stimuli, maintaining a constantly high tension, is referred to as complete tetanus. This occurs when the stimulus frequency is so high that the relaxation phase disappears, causing the contractions to become continuous.
Explanation:Sustained muscle contraction without relaxation between successive stimuli is referred to as complete tetanus. Tetanus occurs when the frequency of motor neuron signaling increases to a point where the muscular contraction becomes continuous, eliminating the relaxation phase that usually occurs between contractions. This state of perpetual contraction arises when the stimulus frequency is so high it prevents any relaxation between subsequent muscle twitches. As a result in continuous contraction, the muscle is in a state of complete tetanus, a state in which the tension within the muscle is about three to four times greater than that of a single twitch.
A related concept is wave summation, which is the condition that arises when a second twitch occurs before the muscle has completely relaxed from the first twitch. This leads to a stronger second contraction. A series of rapidly occurring stimuli can evoke summed contractions, leading to incomplete tetanus. If these stimuli continue at a fast enough pace, the relaxation phases may disappear entirely, resulting in complete tetanus.
The process of muscle contraction, including twitches and tetanus, is based on the interaction between actin and myosin in the muscle fibers. The strength of a muscle's contraction is determined by the amount of overlap between these two proteins in the sarcomere, which is the basic unit of a muscle fiber.
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A homozygous dominant brown mouse is crossed with heterozygous brown mouse. What percentage will the offspring be homozygous recessive? Use the letter “b”
A homozygous dominant brown mouse (BB) crosses with a heterozygous brown mouse (Bb)
What percentage might be homozygous recessive (bb)?
If we draw a Punnett Square, we get BB, BB, Bb, and Bb.
Answer: 0% We don't have homozygous recessive. 50% is homozygous dominant and the other 50% is heterozygous.
There will be no homozygous recessive offspring. Hence, 0% of offspring will be homozygous recessive.
What are homozygous and heterozygous organisms?When at a particular gene locus two identical alleles are present then it is known as a homozygous condition. In this condition, characters are either dominant (BB) or recessive (bb).
When at a particular gene locus two different alleles are present then it is known as a heterozygous condition. In this condition, the recessive allele is suppressed by the dominant allele. Therefore character is always dominant (Bb).
When a homozygous dominant brown mouse (BB) is crossed with the heterozygous brown mouse (Bb), then in next-generation, 50% homozygous dominant brown mouse (BB) is produced and 50% heterozygous brown mouse (Bb). The cross is attached in the image below.
Therefore 0% homozygous recessive offspring are produced.
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2. Determine the phenotype for each genotype using the information provided about SpongeBob.
Yellow body color is dominant to blue.
BB_____Bb_____bb_____
The phenotype for each genotype is as follows:
BB: Yellow body colorBb: Yellow body colorbb: Blue body colorHow to determine phenotype?This is because the yellow body color allele is dominant to the blue body color allele. This means that if an individual has at least one yellow body color allele, they will have a yellow body color. Only if an individual has two blue body color alleles will they have a blue body color.
This is a simplified example. In real life, there are many other factors that can affect the phenotype of an individual, such as the environment and other genes.
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A characteristic that you inherit from your parents is called a ?
Answer:
It is called a Trait.
Explanation:
Answer:
gene
Explanation:
Solve the equation 3(2−7)=3
Mammals do not produce digestive enzyme B. However, sheep and cattle are two types of mammals that contain microorganisms in their digestive tract that produce enzyme B. Based the information provided, which of the following statements best describes why starch and cellulose provide different functions in plants? The differences in the assembly and organization of the monomers of these two polymers result in different chemical properties. A Since starch and cellulose are composed of identical monomers, the cellular environment where they are located controls their function. B The monomers of cellulose are connected by covalent bonds, making it idea for structural support. C The monomers of starch are connected by ionic bonds, making it ideal for energy storage for plants.
Answer: The differences in the assembly and organization of the monomers of these two polymers result in different chemical properties.
Explanation:
Starch and Cellulose flare both polysaccharides which are constructed from the same monomer called glucose. The functions they provide in plants are different which includes the following:
- STARCH is used by plants for energy storage because unlike Cellulose, it's formed from glucose units( oriented in the same direction) connected by alpha linkages which can form compact structures that can easily be broken down.
- Cellulose provides structural support for plant cell wall because unlike Starch, it's formed from glucose units( which rotates 180 degrees around the axis of the polymer backbone chain) connected by beta linkages. This pattern gives Cellulose it's rigid features as is allows for hydrogen bonding between two molecules of Cellulose.
Therefore the statement that best describes why starch and cellulose provide different functions in plants is that (The differences in the assembly and organization of the monomers of these two polymers result in different chemical properties).
Select all the true statements.
Molecules from food can provide energy.
No answer text provided
Chemical energy can be used for cell growth.
Animals need food, but plants don't
Answer:
I think it is, Molecules from food can provide energy.
Explanation:
The food we eat provide us with molecules, such as glucose. Glucose provides energy.
Note: I may be wrong, if so, I am deeply sorry<3
Answer:
It's Molecules from food can provide energy. and Chemical energy can be used for cell growth.
Explanation:
I did the IXL
The cytoskeleton is made of three types of protein fibers: ____________ , which serve to support the cell itself; ____________ , which serve to support the nucleus and plasma membrane; and ____________ , which serve to maintain the shape of the cell and aid in organelle movement.
Answer:
The cytoskeleton is made of three types of protein fibers: actin filaments, which serve to support the cell itself; intermediate filaments, which serve to support the nucleus and plasma membrane; and microtubules, which serve to maintain the shape of the cell and aid in organelle movement.
Explanation:
hope this helps, let me know if you need any other help:)
The cytoskeleton is made of three types of protein fibers: 1. microfilaments, which serve to support the cell itself; 2. intermediate filaments, which serve to support the nucleus and 3. plasma membrane; and microtubules, which serve to maintain the shape of the cell and aid in organelle movement.
Therefore, the correct blanks for 1, 2 and 3 are microfilaments, intermediate filaments and (plasma membrane and microtubules) respectively.
Through their dynamic formation and dissociation, microtubules—which are composed of the tubulin protein—play important roles in cell division, maintaining cell shape, and regulating intracellular transport. These protein fibers collectively support cellular integrity, aid in organelle movement, and participate in various cellular processes, underscoring the importance of the cytoskeleton in cell biology.
Therefore, the correct blanks for 1, 2 and 3 are microfilaments, intermediate filaments and (plasma membrane and microtubules) respectively.
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The following question is based on information from Frank M. Frey, "Opposing Natural Selection from Herbivores and Pathogens May Maintain Floral-Color Variation in Claytonia virginica (Portulacaceae)," Evolution58(11), 2004: 2426-37.
Claytonia virginica is a woodland spring herb with flowers that vary from white, to pale pink, to bright pink. Slugs prefer to eat pink-flowering over white-flowering plants (due to chemical differences between the two), and plants experiencing severe herbivory are more likely to die. The bees that pollinate this plant also prefer pink to white flowers, so that Claytoniawith pink flowers have greater relative fruit set than Claytoniawith white flowers. A researcher observes that the percentage of different flower colors remains stable in the study population from year to year. Given no other information, if the researcher removes all slugs from the study population, what do you expect to happen to the distribution of flower colors in the population over time?
a)the percentage of white flowers should increase over time
b)the distribution of flower colors should not change
c)the distribution of flower colors should randomly fluctuate over time.
d)the percentage of pink flowers should increase over time.
Answer:
The correct answer is option d)"the percentage of pink flowers should increase over time".
Explanation:
In this study it is stated that two factors affect the flower coloration of Claytonia virginica: slugs preference of eating pink-flowering plants and bees preference of pollinating pink-flowering plants as well. If the researcher removes all slugs from the study population we can expect that the percentage of pink flowers should increase over time. The removal of the predator that prefers eating pink-flowering plants will favor the reproduction of this type of plants, which are also favored by bees pollination preference.
Twenty cuttings were taken from one plant and planted in four containers of sand. two containers had a ph of 6.0, and two had a ph of 8.0. when the cuttings matured, all of those grown in a ph of 6.0 had pink flowers, and all of those grown in a ph of 8.0 had blue flowers. one explanation for these results is that the sand at one ph contained a dye that changed the flower color. the best alternative explanation for these results is that -
Answer:
The difference in pH caused the genes for flower color to be expressed differently
Explanation:
Twenty cuttings were taken from one plant and planted in four containers of sand. two containers had a ph of 6.0, and two had a ph of 8.0. when the cuttings matured, all of those grown in a ph of 6.0 had pink flowers, and all of those grown in a ph of 8.0 had blue flowers. one explanation for these results is that the sand at one ph contained a dye that changed the flower color. the best alternative explanation for these results is that difference in pH caused the genes for flower color to be expressed differently
Jean Baptiste Lamarck:
A. was one of the first scientists to propose that species evolve over time.
B. developed a widely accepted theory of evolution.
C. determined that Earth must be far older than most people believed.
D. said that famine and disease keep populations in check by killing off their weakest members.
Explanation:
According to Jean Baptiste Lamarck, fossils are the direct evidence of evolution and nucleotide sequence is the direct evidence of molecular evolution
He also explained about the use and disuse of organs, the organs which are used in priority will develop and the organs which are not used by priority will disintegrate
Lamarck said that vestigial organs in different organs is the direct evidence of use and disuse of organs
Match the following. 1. The chemical structure of genes which control inheritance nucleolus 2. The cell powerhouse DNA 3. A smaller, darker body found in the nucleus RNA 4. Important in protein synthesis ribosome 5. A chemical important in taking blueprint messages from DNA mitochondria
Answer: 1. The chemical structure of genes which control inheritance --DNA 2. The cell powerhouse --mitochondria 3. A smaller, darker body found in the nucleus--nucleolus 4. Important in protein synthesis--- ribosome 5.A chemical important in taking blueprint messages from DNA--RNA
Explanation:there are certain organelles found in the cell for different purposes
The DNA is a complex structure made of nucleotide units.it is the basic hereditary materials found in cells.it contains information necessary for the production of proteins.it is double stranded.
The RNA is a single stranded polynucleotide.it contains ribose instead of deoxyribonucleic sugar.it may be messenger RNA,transfer RNA or ribosomal RNA.the messenger RNA is formed in the nucleus and is involved in protein synthesis.it carries instruction for to the ribosome about protein synthesis. The transfer RNA transfers specific amino acids to the ribosome. The ribosomal RNA is synthesized in the nucelolus and is a major component of the ribosome.
the ribosomes are involved in the synthesis of polypeptide.they may be attached to a rough endoplasmic reticulum or they may occur freely in the cytoplasm.
The mitochondria Is an organelle in the cell with double membrane.it has a inner membrane that folds .this foldings are called cristae.they are known to participate in cellular respiration.
If the producer has 40,000 kcal of energy and the primary consumer 4000 1 point
kcal, how much energy was passed on? *
10% energy was passed on if the producer has 40,000 kcal of energy and the primary consumer 4000 Kcal.
The right answer is option 2.
Explanation:
The producer is the initiator of food chain in a food chain and pyramid.
The amount of energy transferred or pass on to the other level or higher level is 10%. The 90% percent energy is being consumed by organism of the trophic level in carrying out metabolic processes, reproduction etc.
The heat gets dissipated only a small amount reaches the other trophic level.
This logic is also called 10% rule of energy transfer.
So, the producer has 40,000 Kcal of energy
primary consumer comes just after producer as it is a herbivore.
so,
[tex]\frac{10}{100}[/tex] x 40000
= 4000 Kcal
Thus 10% of the energy is passed on.
Many microorganisms can cause disease, and those diseases are considered _______ because they can spread from one organism to another.
Answer: contagious
Explanation:it is considered contagious because think of this virus going around
Which process helps gas exchange to occur?
a transfusion
b condensation
c evaporation
d diffusion
Answer:
D. Diffusion
Explanation:
"...oxygen diffuses from alveolar sacs to blood in capillaries CPR, or cardiopulmonary resuscitation, is a first-aid technique to help save lives."
What is the difference between atria and ventricles?
osso coração é dividido em 4 Câmaras(.Átrios e ventrículos ) 2 ÁTRIOS DIREITO E 2 VENTRÍCULOS ESQUERDO.Os átrios recebe sangue rico em oxigênio pobre em gás carbônio,os ventrículos espulsam sangue rico em gás garbônico e pobre em oxigênio (TROCAS GASOSAS NO PULMÃO é a HEMATOSE.
Answer:
The atria stand for the upper chambers of the heart, while the ventricles are the lower chambers. Atria act as receptors of deoxygenated blood, while ventricles receive blood from the left atria and force it into the aorta.
Think about the different types of animals you’ve seen throughout your life. What characteristics do all of these animals share?
Answer:
All animals need water, food, space, air, and shelter to survive. So all the animals I've seen share those 5 necessities to live. Animals all must also either be herbivores, carnivores, omnivores, or parasites because they cannot make their own food. They are also all multicultural organisms and have a instinct to reproduce to keep their species alive.
Explanation:
Different types of animals have different characteristics, such as being eukaryotic (having cells with a nucleus) or heterotrophic (obtaining energy by consuming other organisms), etc.
What is the significance of the animals?Different animals have different characteristics, such as those that are composed of eukaryotic cells with a nucleus and other membrane-bound organelles and those that are heterotrophic, obtaining energy and nutrients by consuming other organisms. Animals have different forms of movement, such as crawling, swimming, etc., and some animals have different senses of response.
Hence, different types of animals have different characteristics, such as being eukaryotic (having cells with a nucleus) or heterotrophic (obtaining energy by consuming other organisms), etc.
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!
Describe what could happen to a healthy coral reef ecosystem if atmospheric carbon dioxide levels continue to increase.
In your description, be sure to:
- Describe one way a healthy coral reef ecosystem could change if atmospheric carbon dioxide levels continue to increase.
- Describe how that change to a coral reef ecosystem could affect other organisms in the coral reef ecosystem.
Answer:increased CO2 in the oceans raises the acidity of the water which prevent the formation of calcium carbonate which are used by corals to build their skeleton. When this happened organisms like fishes will not have conducive place for their reproduction.
Explanation:
Final answer:
Increase in atmospheric carbon dioxide can lead to ocean acidification, which interferes with coral calcification, causing coral bleaching and detrimental effects on species diversity within coral reef ecosystems.
Explanation:
Effects of Increased Atmospheric Carbon Dioxide on Coral Reefs
As atmospheric carbon dioxide levels continue to increase, one of the significant changes that could occur in a healthy coral reef ecosystem is ocean acidification. This results from carbon dioxide dissolving in ocean water, which lowers the pH and thus increases acidity. Higher acidity levels interfere with the coral's calcification process, essential for building their calcium carbonate structures. This phenomenon can lead to an effect known as coral bleaching, where corals lose their symbiotic algae, causing them to turn white and often die if the algae loss is prolonged.
Such changes to a coral reef ecosystem can have a profound impact on other organisms within this habitat. Since coral reefs serve as crucial sources of food and shelter for a diverse array of marine life, the decline in reef health can lead to a reduction in species diversity and abundance. Predatory fish and other marine animals may decline as their sources of food diminish, disrupting the entire food web associated with the reef ecosystem.
The process by which infectious disease occurs is known as the
Answer: pathogens? Pandemic?
how can scientists accurately compare atmospheric composition today with atmospheric composition thousands of years ago?
Answer:
They accurately compare the current atmosphere with the previous one, by assessing the amount of atmospheric gases present today, with the amount of atmospheric gases trapped in ice cores that they believe are millennial, that is, they have existed for thousands of years ago.
Explanation:
As we know, it is difficult to compare current characteristics of the planet earth with characteristics that the planet had in the past, thousands of years ago. This is because the ancient characteristics on earth are not fully available to be analyzed, since most of them have been modified over time.
To do this, scientists need to find factors that may have existed thousands of years ago and assess whether these factors have any account of the characteristics of the earth. In the case of atmospheric characteristics, it is common for scientists to compare the current atmosphere with the atmosphere of thousands of years ago, with the assessment of the amount of atmospheric gases trapped in ancient ice cores, with the amount of atmospheric gases present in the atmosphere today.
Scientists compare ancient and contemporary atmospheric compositions through indirect methods, such as analyzing ice cores, tree rings, glacier sizes, pollen counts, and ocean sediments, as well as the chemistry of variously-aged minerals. These factors indicate changes in the atmosphere over time.
Explanation:Scientists compare the atmospheric composition of today with that of thousands of years ago through various indirect methods of measurement. For example, they analyze ice cores, tree rings, glacier sizes, pollen counts, and ocean sediments. These physical attributes are impacted by changes in the atmosphere and therefore, show patterns overtime.
When an ice core or tree is examined, each layer represents a year and the trapped gases represent the atmosphere during that year. This allows scientists to reconstruct atmospheric composition over thousands of years.
Furthermore, the chemistry of minerals that formed at different times can indicate the amount of, for example, atmospheric oxygen. It's important to note that alterations in Earth's orbit around the sun and the activity of the sun itself also provide insights about the history of Earth's atmospheric composition.
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MPAs protect entire __________, rather than just one animal.
Answer:
Marine Protected areas are the ocean places that are set aside like parks, providing the sanctuary for the whole species rather than just one animal.
It also protects the whole food web so that by the time they can recover them self and thrive.
They are equipped to protect the rare species of fishes, corals and other type of endangered species of aquatic animals.
They also consider kelp, migratory animals, birds thriving on water and inside water and ensures their life.
So, MPAs protect the entire system, food chain and aquatic animals associated with it rather than one animal.
Which organisms are tertiary consumers? Check all that apply.
•penguins
•cod
•Elephant seal
•killer whale
•krill
•squid
•Leopard seal
•zooplankton
Answer: Tertiary Consumers: killer whales, penguins, leopard seals, and elephant seals
Explanation: brainliest please
Answer:
A, C, D, G
Explanation:
penguin, elephant seal, killer whale, leopard seal
Why is genetic diversity important in a species?
Final answer:
Genetic diversity is important in a species because it provides the raw material for adaptation and increases the species' potential to survive and evolve in changing environmental conditions. Genetic diversity helps a species to diversify its adaptability to the environment.
Explanation:
Genetic diversity is important in a species because it provides the raw material for adaptation. The future potential for adaptation in a species depends on the genetic diversity held in the genomes of individuals in the population. A species with high genetic diversity is more capable of adapting to changing environmental conditions, while a species with low genetic diversity may be at higher risk of extinction.
A small mass of tissue that is made up of Purkinje fibers, ganglion cells, and nerve fibers, that is embedded in the musculature of the right atrium, and that originates the impulses stimulating the heartbeat called as?
Answer:
It is called the S-A node, or rather sinus node.