Macrophages are cells that engulf and digest bacteria and cell debris. To perform the digestive function, macrophages tend to have more ________ than other cells.

A. peroxisomes
B. endosomes
C. ribosomes
D. lysosomes
E. mitochondria


Answer: D

Anatomy & Physiology

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Which of the following is not part of the conduction system of the heart?

A) AV node B) bundle of His C) AV valve D) SA node

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Segmental contractions are mixing contractions that occur predominantly in the ________.

A. large intestine B. small intestine C. stomach D. esophagus E. oral cavity

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Free energy is ________ when exergonic reactions proceed.

A. increased B. made available C. decreased D. unchanged

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Centromeres divide in

A. mitosis and meiosis I. B. mitosis and meiosis II. C. meiosis II only. D. meiosis I and meiosis II. E. mitosis, meiosis I and meiosis II.

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