Which words best complete the lettered blanks in the two sentences below? Organic compounds, such as proteins and starches, are too __A__ to diffuse into cells. Proteins are digested into __B__ and starches are digested into __C__.

Correct Answer: C

Rationale: Proteins and starches are too large to diffuse into cells. Proteins are digested into amino acids , and starches into simple sugars , matching digestion products.

Correct Answer: B

Rationale: The liver stores glycogen , produces bile , and can regenerate , but insulin is made by the pancreas, not the liver, making B correct.

Correct Answer: B

Rationale: The cardiac (lower esophageal) sphincter prevents acid chyme from refluxing into the esophagus, making B correct.

Correct Answer: C

Rationale: Starch digestion begins in the mouth with salivary amylase, making C correct.

Correct Answer: C

Rationale: The gallbladder releases bile to emulsify lipids, making C correct.