Facilitated diffusion refers to the process of

Correct Answer: A

Rationale: Facilitated refers to the role of the protein carriers. The other choices refer to diffusion, active transport and osmosis respectively

Correct Answer: D

Rationale: Some proteins form channels which allow molecules and ions to enter the cell.

Correct Answer: C

Rationale: These are the four primary types. Blood is not a "type' of tissue.

Correct Answer: D

Rationale: Connective tissue includes fibres and cells which are not closely packed.

Correct Answer: A

Rationale: Separation of the two chromatids of a chromosome occurs at anaphase. Choice D is cytokinesis and begins in late anaphase and continues into telophase.