The correct answer is guanine. Guanine is one of the nitrogenous bases found in nucleic acids such as DNA and RNA. The other options listed (carbon, leucine, deoxyribose) are not nitrogen bases.
Nucleic acids are biomolecules that are made up of nucleotides. Nucleotides contain sugar, a phosphate group, and a nitrogen base. DNA is an example of a nucleic acid. Which of the following is a nitrogen base?(1 point)
Responses
carbon
carbon
leucine
leucine
deoxyribose
deoxyribose
guanine
11 answers
What are the building blocks that make up proteins?(1 point)
Responses
starches
starches
nucleic acids
nucleic acids
amino acids
amino acids
lipids
Responses
starches
starches
nucleic acids
nucleic acids
amino acids
amino acids
lipids
The correct answer is amino acids. Amino acids are the building blocks that make up proteins. The other options listed (starches, nucleic acids, lipids) are not building blocks of proteins.
How do plants and animals rearrange atoms in chemical reactions to support their functions?(1 point)
Responses
Plants use oxygen for photosynthesis, which animals then use for cellular respiration.
Plants use oxygen for photosynthesis, which animals then use for cellular respiration.
Animals and plants both take in oxygen and release carbon dioxide during cellular respiration.
Animals and plants both take in oxygen and release carbon dioxide during cellular respiration.
Plants and animals both take in carbon dioxide and release oxygen during cellular respiration.
Plants and animals both take in carbon dioxide and release oxygen during cellular respiration.
Animals produce carbon dioxide and plants produce oxygen as an output of cellular respiration.
Responses
Plants use oxygen for photosynthesis, which animals then use for cellular respiration.
Plants use oxygen for photosynthesis, which animals then use for cellular respiration.
Animals and plants both take in oxygen and release carbon dioxide during cellular respiration.
Animals and plants both take in oxygen and release carbon dioxide during cellular respiration.
Plants and animals both take in carbon dioxide and release oxygen during cellular respiration.
Plants and animals both take in carbon dioxide and release oxygen during cellular respiration.
Animals produce carbon dioxide and plants produce oxygen as an output of cellular respiration.
The correct response is: Animals produce carbon dioxide and plants produce oxygen as an output of cellular respiration.
In essence, animals perform cellular respiration, which consumes oxygen and produces carbon dioxide, while plants perform photosynthesis, which consumes carbon dioxide and produces oxygen. This interaction supports the functions of both plants and animals in ecosystems.
Identify the statement below that is true about exothermic reactions.(1 point)
Responses
They tend to decrease the temperature of their surroundings.
They tend to decrease the temperature of their surroundings.
They release heat energy to the surrounding environment.
They release heat energy to the surrounding environment.
They have products that have more energy compared to the reactants.
They have products that have more energy compared to the reactants.
They do not require activation energy in order to get started.
Responses
They tend to decrease the temperature of their surroundings.
They tend to decrease the temperature of their surroundings.
They release heat energy to the surrounding environment.
They release heat energy to the surrounding environment.
They have products that have more energy compared to the reactants.
They have products that have more energy compared to the reactants.
They do not require activation energy in order to get started.
The correct statement about exothermic reactions is: They release heat energy to the surrounding environment.
Exothermic reactions involve the release of energy, usually in the form of heat, into their surroundings. This typically results in an increase in the temperature of the surroundings rather than a decrease. The other statements provided are not accurate regarding exothermic reactions.
You want to use evidence to support a claim that ATP provides the energy for various cellular activities, and this only happens because of cellular respiration.
Which piece of evidence best supports your statement?
(1 point)
Responses
ATP is used to break down glucose into carbon dioxide and water, powering cellular processes.
ATP is used to break down glucose into carbon dioxide and water, powering cellular processes.
During cellular respiration, glucose if broken down and the energy released is used to form ATP.
During cellular respiration, glucose if broken down and the energy released is used to form ATP.
Cellular respiration releases oxygen, which is necessary to make ATP in the mitochondria.
Cellular respiration releases oxygen, which is necessary to make ATP in the mitochondria.
ATP is produced in large quantities during photosynthesis.
Which piece of evidence best supports your statement?
(1 point)
Responses
ATP is used to break down glucose into carbon dioxide and water, powering cellular processes.
ATP is used to break down glucose into carbon dioxide and water, powering cellular processes.
During cellular respiration, glucose if broken down and the energy released is used to form ATP.
During cellular respiration, glucose if broken down and the energy released is used to form ATP.
Cellular respiration releases oxygen, which is necessary to make ATP in the mitochondria.
Cellular respiration releases oxygen, which is necessary to make ATP in the mitochondria.
ATP is produced in large quantities during photosynthesis.
The piece of evidence that best supports the statement that ATP provides the energy for various cellular activities and that this occurs as a result of cellular respiration is: During cellular respiration, glucose is broken down and the energy released is used to form ATP.
This statement directly connects the process of cellular respiration to the production of ATP, illustrating how energy from glucose is converted into a usable form for cellular activities.
You find a blog post written by a student on a university website about photosynthesis. It cites multiple peer-reviewed journals, and has several comments from other students who agree with the findings. Which is a reason to believe that the source is reliable?(1 point)
Responses
It may be reliable because they cited multiple peer-reviewed studies from scientific journals.
It may be reliable because they cited multiple peer-reviewed studies from scientific journals.
It may be reliable because they cited other student blogs.
It may be reliable because they cited other student blogs.
It may be reliable because other students verify the information in the blog.
It may be reliable because other students verify the information in the blog.
It may be reliable because the blog has been featured on a popular website.
Responses
It may be reliable because they cited multiple peer-reviewed studies from scientific journals.
It may be reliable because they cited multiple peer-reviewed studies from scientific journals.
It may be reliable because they cited other student blogs.
It may be reliable because they cited other student blogs.
It may be reliable because other students verify the information in the blog.
It may be reliable because other students verify the information in the blog.
It may be reliable because the blog has been featured on a popular website.
The correct response is: It may be reliable because they cited multiple peer-reviewed studies from scientific journals.
Citing peer-reviewed studies is a strong indicator of reliability, as these studies have undergone rigorous evaluation by experts in the field. This adds credibility to the claims made in the blog post. The other options do not provide as strong a basis for reliability.