What is the main function of proteins in the plasm

ATI RN

ATI RN Test Bank

What is the main function of proteins in the plasma membrane?

A. make cellular energy B. contain cell contents C. make ribosomes D. transport through the membrane

Correct Answer: D

Rationale: Membrane proteins primarily facilitate transport of substances across the membrane.

Cell eating is also known as

A. phagocytosis B. exocytosis C. pinocytosis D. cell pumping

Correct Answer: A

Rationale: Phagocytosis is the process of engulfing large particles, often called 'cell eating.'

Mitosis functions in:

A. growth B. spermatogenesis C. oogenesis D. B and C, but not A

Correct Answer: A

Rationale: Mitosis is for growth and repair; spermatogenesis and oogenesis involve meiosis.

If a cell has 46 chromosomes before mitosis, the two new cells will have chromosomes.

A. 23 B. 92 C. 46 D. 69

Correct Answer: C

Rationale: Mitosis maintains chromosome number; each daughter cell gets 46.

An atom of carbon has 6 protons, 6 neutrons and 6 electrons. What is the mass number of this isotope of carbon?

A. 6 B. 9 C. 12 D. 18

Correct Answer: C

Rationale: Mass number = protons + neutrons = 6 + 6 = 12 (carbon-12 isotope).

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