Question

Glycogen is abundantly present in which of the following tissues?

• A. Liver
• B. Kidney
• C. Heart
• D. Pancreas

Hint:

Glycogen Storage: Highest concentration per gram tissue = LIVER ($6-8\%$). Largest total absolute storage = SKELETAL MUSCLE ($400\text{ g}$).

Answer 1

The Correct Option is A

Step 1: Understanding the Concept:
Glycogen is the primary storage homopolysaccharide in animals, concentrated at the highest percentage by tissue weight in the liver.

Step 2: Detailed Explanation:
Tissue distribution of Glycogen:
1. Liver: Contains the highest cellular concentration of glycogen per unit mass (constituting up to 6% to 8% of fresh liver weight, $\approx 100\text{ g}$), functioning to buffer and maintain systemic blood glucose homeostasis via glucose-6-phosphatase.
2. Skeletal Muscle: Stores $\approx 1-2\%$ by weight (larger total mass $\approx 400\text{ g}$), utilized strictly for internal muscular contraction.
3. Kidneys, heart, and brain store negligible amounts.

Step 3: Final Answer:
Thus, glycogen is abundantly present in the Liver, corresponding to option (A).