Goblet cells are a type of:

Correct Answer: C

Rationale: Goblet cells are single cells within epithelia that secrete mucus (unicellular glands).

Correct Answer: D

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

Correct Answer: A

Rationale: Chromatin is in the nucleus, not the cytoplasm; the others are cytoplasmic organelles.

Correct Answer: A

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

Correct Answer: A

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