The 'Hormone Adiponectin' is a protein hormone secreted exclusively by adipose (fat) tissue. Unlike most other adipokines, its levels are inversely related to body fat. Its primary functions include: MCQ with Answer and Explanation

The 'Hormone Adiponectin' is a protein hormone secreted exclusively by adipose (fat) tissue. Unlike most other adipokines, its levels are inversely related to body fat. Its primary functions include:
A. Promoting insulin resistance and inflammation
B. Enhancing insulin sensitivity, promoting fatty acid oxidation, and having anti-inflammatory effects
C. Inhibiting glucose uptake
D. Stimulating appetite
Answer: Option B
Solution (By JKSSB Mock Tests)
Adiponectin is an abundant protein hormone secreted by adipose tissue. Uniquely, its plasma levels are inversely correlated with body fat percentage; obese individuals have lower levels. Its primary functions are highly beneficial for metabolic health: it enhances insulin sensitivity in the liver and muscles, promotes the oxidation of fatty acids (reducing fat accumulation), inhibits glucose production by the liver, and has potent anti-inflammatory and anti-atherogenic effects on the blood vessels. Low levels of adiponectin are associated with insulin resistance, type 2 diabetes, and cardiovascular disease.

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The hormone that stimulates the conversion of glucose to glycogen in the liver is:
A. Insulin
B. Glucagon
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D. Cortisol

Correct Answer: Option A


Explanation:
Insulin activates glycogen synthase, promoting glycogenesis. Glucagon and epinephrine activate glycogen phosphorylase, promoting glycogenolysis.

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Question #2
The organelle involved in lipid metabolism and detoxification is:
A. Smooth ER
B. Golgi apparatus
C. Lysosome
D. Rough ER

Correct Answer: Option A


Explanation:
Smooth endoplasmic reticulum (SER) lacks ribosomes and is involved in synthesis of lipids, steroid hormones, and detoxification of drugs and toxins via cytochrome P450 enzymes. Rough ER is for protein synthesis, Golgi for packaging, lysosomes for digestion. SER is abundant in liver and gonadal cells.

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Question #3
Consider the following statements about the cell membrane:
1. It is composed of a phospholipid bilayer.
2. It is fully permeable.
3. Proteins are embedded in the membrane.
Which of the above is/are correct?
A. 1 and 2 only
B. 1 and 3 only
C. 2 and 3 only
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Correct Answer: Option B


Explanation:
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This question belongs to: Science Biology