Where in the nephron is most of the glucose reabsorbed back into the blood?

Correct Answer: A

Rationale: Most glucose is reabsorbed in the proximal convoluted tubule via active transport.

Correct Answer: A

Rationale: Bile emulsifies fats, breaking them into smaller droplets to facilitate digestion by lipases.

Correct Answer: A

Rationale: Disaccharides, like sucrose, consist of two monosaccharides linked together and are broken down into simpler sugars during digestion.

Correct Answer: A

Rationale: Saliva contains the enzyme amylase that breaks some starches down into maltose and dextrin. Thus, digestion of food occurs within the mouth, even before the food reaches the stomach.

Correct Answer: C

Rationale: Protein digestion begins in the stomach with pepsin and is completed in the ileum by proteolytic enzymes from the pancreas and intestinal mucosa.