Correct Answer: D

Rationale: The correct answer is glycogen. Glycogen is a type of carbohydrate stored in the body that is broken down into glucose to help maintain blood glucose levels during fasting periods. Glucose (choice
A) is the simplest form of sugar and is a product of carbohydrate digestion, not the stored form like glycogen. Galactose (choice
B) is a monosaccharide found in dairy products. Dextrins (choice
C) are intermediate products of starch digestion and not directly involved in maintaining blood glucose levels during fasting.

Correct Answer: B

Rationale: Hemoglobin is a protein that carries oxygen in the blood, making it the correct answer.
Choice A, Saline, is a salt solution and not a protein.
Choice C, Cellulose, is a complex carbohydrate found in the cell walls of plants, not a protein.
Choice D, Prostaglandins, are lipid compounds with hormone-like effects, not proteins.

Correct Answer: C

Rationale: The correct answer is C: Small intestine. The majority of lipid digestion occurs in the small intestine, where bile and pancreatic lipase are active. Lipids are broken down into fatty acids and glycerol in the small intestine.

Choices A, B, and D are incorrect because the mouth and stomach play minor roles in lipid digestion, and the large intestine is mainly responsible for absorbing water and electrolytes from the indigestible food residues.

Correct Answer: C

Rationale: Inadequate protein intake can lead to a decrease in antibody production, making individuals more susceptible to infections. Insulin (
Choice
A) is a hormone involved in regulating blood sugar levels, not related to protein intake. Lipoprotein (
Choice
B) is a type of lipid-protein complex involved in lipid transport, not directly related to antibody production. Albumin (
Choice
D) is a protein that helps maintain oncotic pressure and carries various substances in the blood, but it is not primarily responsible for fighting infections like antibodies.

Correct Answer: B

Rationale: The recommended dietary intake of protein for adults is 0.8 grams per kilogram of body weight. This amount is considered adequate for most healthy adults.

Choices A, C, and D are incorrect as they do not align with the generally recommended protein intake for adults.