Free Macromolecules MCQs with Answers

• A. Mg2+
• B. K+
• C. Ca2+
• D. Iodine
• E. Zinc

Explanation: The thyroid gland uses iodine from food to make two thyroid hormones: triiodothyronine (T3) and thyroxine (T4).

• A. 200 Joules
• B. 2000 Joules
• C. 4.184 Joules
• D. 4180 Joules
• E. 3630 Joules

Explanation: 1 calorie =4.184 Joules.This is just a factual recall.

• A. Vitamin D
• B. Vitamin E
• C. Vitamin A
• D. Vitamin K

Explanation: Vitamin A. Both the upper and lower layers of skin need vitamin A. It seems to prevent sun damage by interrupting the process that breaks…

• A. α 1 - 4 glycosidic
• B. β 1 - 4 and 1 - 6 glycosidic
• C. α 1-4 and 1 - 6 glycosidic
• D. β 1 - 4 glycosidic

Explanation: Amylopectin has both α 1-4 and 1 - 6 glycosidic bond linkages.

• A. Galactose
• B. Fructose
• C. Mannose
• D. Lactose

Explanation: Lactose is not a monosaccharide but a disaccharide,as shown below:

• A. Hormonal protein
• B. Structural protein
• C. Transport protein
• D. Genetic protein

Explanation: Amino acid-derived hormones include thyroxine (produced by the thyroid gland) and melatonin (produced by the pineal gland).

• A. It does not exist in open chain form
• B. Carbonyl groups are not free to reduce fehling's solution
• C. They have at least one free carbonyl group
• D. They form 1-4 glycosidic linkage
• E. Both a and b

Explanation: A sugar that serves as a reducing agent due to its free aldehyde or ketone functional groups in its molecular structure.

• A. Zwitterion
• B. Unit electron
• C. Cation
• D. Anion

Explanation: A zwitterion is an ion that contains two functional groups. In simple terms, it is an ion possessing both positive and negative electrical…

• A. Monosaccharide
• B. Disaccharide
• C. Polysaccharide
• D. Oligosaccharide

Explanation: A monosaccharide is the simplest carbohydrate and cannot be hydrolyzed to produce a smaller carbohydrate molecule.

• A. 4.8 cal
• B. 4.2 kcal
• C. 9 joules
• D. 9.2 kcal

Explanation: Carbohydrates, proteins and fats in the foods provide energy for the body functions and physical activities.

• A. Vitamin D
• B. Vitamin A
• C. Vitamin C
• D. Vitamin B6

Explanation: Vitamin C (also known as ascorbic acid and ascorbate) is a vitamin found in various foods and sold as a dietary supplement.

• A. Structural protein
• B. Respiratory protein
• C. Storage protein
• D. Contractile protein

Explanation: Ferritin are actually the stores of iron that are utilized when the serum iron depletes.

• A. Fructose
• B. d-D- Glucose (d=alpha)
• C. B-D Glucose
• D. Sucrose

Explanation: Starch is constituted by α-D-glucose units, which can be organized to form two distinct molecules, amylose and amylopectin.

• A. Glucose
• B. Maltose
• C. Sucrose
• D. Fructose

Explanation: Fructose is the sweetest sugar amongst all the given sugars. An estimation of concentration of sugar revealed that if sucrose has a…

• A. Acidic
• B. Basic
• C. Neutral
• D. Weakly acidic

Explanation: The chemical nature of an amino acid depends on its variable 'R' group.

• A. Mg2+
• B. Al3+
• C. Fe2+
• D. B3+

Explanation: The chlorophyll molecule consists of a central magnesium atom surrounded by a nitrogen-containing structure called a porphyrin ring.

• A. I only
• B. I and III
• C. I and II
• D. II and III

Explanation: If we examine the statements individually, starting with the first one, we know that for alcoholic fermentation, which is anaerobic…

• A. Primary structure
• B. Secondary structure
• C. Tertiary structure
• D. Quaternary structure

Explanation: Protein tertiary structure is the three dimensional shape of a protein.

• A. Carbon
• B. Hydrogen
• C. Nitrogen
• D. Sulphur

Explanation: All proteins contain carbon, hydrogen, and nitrogen. Carbon forms the backbone of amino acids, while hydrogen is found in amino and…

• A. Simple proteins
• B. Conjugated proteins
• C. Derived proteins
• D. None

Explanation: Collagen is most abundant protein in animals forming 25%-35% of body protein which is a simple protein.