macromolecules are built of
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Nursing Elites

ATI RN

ATI Anatomy and Physiology Online Practice

1. Macromolecules are built of?

Correct answer: A

Rationale: The correct answer is A: Monomers. Macromolecules are built from smaller subunits called monomers. Monomers join together through chemical reactions to form larger molecules known as macromolecules. Option B is incorrect as it does not provide the accurate information regarding the composition of macromolecules. Option C is not applicable as it does not offer a relevant choice. Option D is incorrect because there is a specific answer related to the composition of macromolecules.

2. Absorption is the ability to exhale carbon dioxide.

Correct answer: B

Rationale: Absorption is the process of taking in substances such as nutrients or gases. Exhaling carbon dioxide is a part of the process of respiration, not absorption. Therefore, the statement that absorption is the ability to exhale carbon dioxide is false. Choice A is incorrect because absorption does not involve exhaling carbon dioxide. Choice C is incorrect as the concept of absorption can be clearly defined. Choice D is also incorrect as there is a definitive answer to the statement provided.

3. The muscular system is responsible for body movements, maintenance of posture, and production of body heat.

Correct answer: A

Rationale: The correct answer is A: True. The muscular system is indeed responsible for body movements, maintenance of posture, and the production of body heat. Muscles contract and relax to allow movement, help in maintaining an upright posture, and generate heat through muscle activity. Choice B is incorrect because the functions mentioned are accurate. Choice C is incorrect as the functions of the muscular system are well-established. Choice D is incorrect as there is a correct answer among the options.

4. Does the digestive system filter wastes from the blood?

Correct answer: B

Rationale: The correct answer is False. The digestive system is responsible for breaking down food and absorbing nutrients, not filtering wastes from the blood. The excretory system, particularly the kidneys, filters wastes from the blood to form urine. Choices A, C, and D are incorrect because the digestive system's primary function is not waste filtration but rather digestion and absorption of nutrients.

5. Is the parietal pleura a visceral membrane?

Correct answer: B

Rationale: The statement that the parietal pleura is a visceral membrane is false. The parietal pleura is actually a membrane that lines the thoracic cavity and is responsible for protecting and cushioning the lungs. Visceral pleura, on the other hand, is the membrane that covers the surface of the lungs. Therefore, the parietal pleura is not a visceral membrane, making the correct answer 'False.' Choices C and D are not relevant as the question is asking for a true/false statement.

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