Correct Answer: B

Rationale: The correct answer is B: 'Confinement away from the general population.' Quarantine is the practice of isolating individuals who may have been exposed to a contagious disease but are not yet ill. This isolation helps prevent the potential spread of the disease. Choice A, 'Isolation,' is partially correct but does not capture the specific aspect of separation from the general population. Choice C, 'Treatment,' is incorrect as quarantine does not involve providing medical care but rather focusing on preventing transmission. Choice D, 'Exposure,' is also incorrect as quarantine is about separating potentially exposed individuals, not intentionally exposing them.

Correct Answer: A

Rationale: The correct answer is A: 'Movement of nutrients from the digestive tube into the bloodstream.' Absorption specifically refers to the process where nutrients are taken up by the body from the digestive tract into the bloodstream for utilization. Choices B, C, and D are incorrect. Choice B refers to the secretion of enzymes into the stomach, choice C refers to the absorption of water from the intestines, and choice D refers to the excretion of waste from the body, which are not the definitions of absorption.

Correct Answer: B

Rationale: The correct answer is B: 'Produced within the body.' Endogenous refers to substances or processes that originate or are produced within an organism or system. Choices A, C, and D are incorrect. Choice A, 'Produced outside the body,' is the opposite of endogenous. Choice C, 'Taken from an external source,' describes exogenous rather than endogenous. Choice D, 'Linked to environmental factors,' is not a direct definition of endogenous.

Correct Answer: B

Rationale: The correct answer is B: 'To draw together.' Contract means to reduce in size or draw together. Choices A, C, and D are incorrect because they suggest actions opposite to what contracting means. A: 'To expand,' C: 'To elongate,' and D: 'To dissolve' all indicate actions that involve increasing in size or breaking apart, which are the opposite of what contracting means.

Correct Answer: B

Rationale: The correct answer is B: 'Uneven.' Asymmetric means lacking symmetry or being uneven, so the term 'Uneven' is the most appropriate synonym. 'Even' (choice A) means equal or level, which is the opposite of asymmetric. 'Identical' (choice C) means similar or the same, and 'Matching' (choice D) means corresponding or fitting together, neither of which captures the meaning of asymmetric.