The hormone that promotes the breakdown of glycogen to glucose in the liver is: MCQ with Answer and Explanation

Explanation:
Almost all enzymes are proteins (except ribozymes). They lower activation energy, are highly specific, and cofactors can be inorganic (metal ions) or organic (coenzymes).

Explanation:
Vitamin A is essential for the synthesis of rhodopsin, a visual pigment; its deficiency leads to night blindness, the inability to see in low light conditions. Vitamin B1 (thiamine) is crucial for carbohydrate metabolism; its deficiency causes beriberi, characterized by nerve and heart dysfunction, and muscle weakness. Vitamin C (ascorbic acid) is essential for collagen synthesis; its deficiency causes scurvy, characterized by bleeding gums, loose teeth, and poor wound healing. All three statements are correct.

Explanation:
Crystallization is a property of non-living substances where molecules arrange in a definite pattern, e.g., salt crystals. Living organisms exhibit growth, reproduction, metabolism, cellular organization, and consciousness. Metabolism is a defining feature of all living organisms, occurring even in unicellular forms. Reproduction, though absent in sterile organisms like mules, is generally a characteristic. Growth in living beings is internal and intrinsic, unlike extrinsic accumulation in non-living things. Hence, crystallization is not a characteristic of life.