which of the following options identifies the products of cell respiration
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Biology Practice Test

1. Which of the following options identifies the products of cell respiration?

Correct answer: C

Rationale: The correct answer is C: 'Water, carbon dioxide, and adenosine triphosphate (ATP).' During cellular respiration, glucose is broken down in the presence of oxygen to produce water, carbon dioxide, and ATP. Choice A is incorrect as oxygen is not a product of cell respiration but a reactant. Choice B is incorrect as it lists glucose and oxygen, which are actually reactants in the process. Choice D is incorrect as glucose is not a product of cell respiration but a substrate that is broken down to release energy.

2. Which of the following describes the set of metabolic reactions and processes that take place in the cells of organisms to convert biochemical energy from nutrients into adenosine triphosphate (ATP), and then release waste products?

Correct answer: A

Rationale: The correct answer is A: Cellular respiration. Cellular respiration is the process in cells that converts biochemical energy from nutrients into ATP and releases waste products. This process occurs in the mitochondria of the cell. Choice B, Meiosis, is a type of cell division that produces gametes with half the chromosome number. Choice C, Photosynthesis, is the process by which plants, algae, and some bacteria convert light energy into chemical energy to produce glucose. Choice D, Mitosis, is a type of cell division that results in two daughter cells with identical sets of chromosomes as the parent cell.

3. Phagocytes in the immune system are responsible for the biological action of which of the following?

Correct answer: B

Rationale: The correct answer is B: Consuming. Phagocytes are cells that engulf and digest pathogens, dead cells, and other harmful particles, playing a crucial role in the immune system's defense. Phagocytes do not secrete substances, alter particles, or build structures; their primary function is to consume and eliminate harmful entities.

4. In which of the following does cellular respiration take place?

Correct answer: B

Rationale: The correct answer is B, Mitochondrion. Cellular respiration occurs in the mitochondria, where glucose is converted into energy through a series of metabolic processes. Choice A, Golgi apparatus, is incorrect as it is involved in modifying, sorting, and packaging proteins. Choice C, Chloroplast, is incorrect as it is the site of photosynthesis in plant cells, not cellular respiration. Choice D, Ribosome, is incorrect as it is responsible for protein synthesis, not energy production through cellular respiration.

5. In DNA, the nucleotide base adenine always binds with which of the following?

Correct answer: C

Rationale: The correct answer is C: Thymine. In DNA, adenine always pairs with thymine, forming a base pair held together by hydrogen bonds. Guanine pairs with cytosine. Uracil is found in RNA, not DNA. Cytosine pairs with guanine. Therefore, option C is the correct pairing for adenine in DNA.

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