The break down products of fat molecules can pass directly through the cell membrane. Why?

Correct Answer: A

Rationale: Fat breakdown products (fatty acids and glycerol) are lipid-soluble and can diffuse through the phospholipid bilayer of cell membranes.

Correct Answer: D

Rationale: The renal artery supplies blood to the kidney for filtration.

Correct Answer: D

Rationale: Alcohol inhibits ADH, reducing water reabsorption and increasing urine output, leading to dehydration.

Correct Answer: A

Rationale: Saliva does not aid in protein digestion; it primarily helps in moistening food, contains amylase for carbohydrate digestion, and facilitates chemical digestion.

Correct Answer: A

Rationale: The duodenum is the first part of the small intestine where most chemical digestion takes place.