The movement of water molecules across a selective

ATI RN

ATI RN Test Bank

The movement of water molecules across a selectively permeable membrane is called:

A. Active transport B. Facilitated diffusion C. Osmosis D. Endocytosis

Correct Answer: C

Rationale: Osmosis is the passive movement of water across a selectively permeable membrane.

Which of the following is a function of the smooth endoplasmic reticulum?

A. Protein synthesis B. Lipid synthesis and detoxification C. ATP production D. Ribosome assembly

Correct Answer: B

Rationale: The smooth ER synthesizes lipids and detoxifies harmful substances.

The exchange of genetic material between homologous chromosomes occurs during which phase of meiosis?

A. Prophase I B. Metaphase I C. Anaphase I D. Telophase I

Correct Answer: A

Rationale: Crossing over occurs during Prophase I of meiosis.

Which of the following is NOT a part of the endomembrane system?

A. Nucleus B. Golgi apparatus C. Endoplasmic reticulum D. Mitochondria

Correct Answer: D

Rationale: Mitochondria are not part of the endomembrane system.

The movement of molecules from an area of lower concentration to an area of higher concentration using energy is called:

A. Facilitated diffusion B. Osmosis C. Active transport D. Simple diffusion

Correct Answer: C

Rationale: Active transport moves molecules against their gradient using energy.

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