Q.81 Zoology ⭐ 360° Option Elimination Active

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NEET 2020 Zoology Question 81 Solution

Topic: Chemical Coordination and Integration · Official NTA Booklet Code E1

Question

Select the correct statement.

(1)Glucocorticoids stimulate gluconeogenesis.
(2)Glucagon is associated with hypoglycemia.
(3)Insulin acts on pancreatic cells and adipocytes.
(4)Insulin is associated with hyperglycemia.

✓

Verified Against NTA Final Answer Key

Option (1) : Glucocorticoids stimulate gluconeogenesis.

📚 Chemical Coordination and Integration Easy

📋 Given Parameters & Problem Setup

Endocrine Regulators Glucocorticoids (cortisol), Glucagon, Insulin

Question Objective Select the factually CORRECT physiological statement

⚡

The 30-Second Exam Hall Shortcut: ⚡ "Cortisol Stimulates Gluconeogenesis; Glucagon = Hyperglycemia; Insulin = Hypoglycemia!"

⏱️ 20 seconds

Glucocorticoids (cortisol from adrenal cortex) stimulate gluconeogenesis, lipolysis, and proteolysis. Glucagon raises blood sugar (HYPERglycemic), and insulin lowers blood sugar (HYPOglycemic). Statement (1) is 100% correct! Mark Option (1) in 5 seconds.

1 Glucocorticoids (cortisol) stimulate gluconeogenesis, lipolysis, and proteolysis (Statement 1 is TRUE).

2 Glucagon is a hyperglycemic hormone, NOT hypoglycemic (Statement 2 is false).

3 Insulin acts primarily on hepatocytes and adipocytes, not pancreatic cells (Statement 3 is false).

4 Insulin is a hypoglycemic hormone, NOT hyperglycemic (Statement 4 is false).

5 Select Option (1).

🛡️

Why You Can 100% Trust This Shortcut: NCERT Biology · Human Physiology: Chemical Coordination and Integration (Adrenal Cortex & Pancreas)

📐

Step-by-Step Rigorous Workflow & Mathematical Proof

Step 1

Physiological Functions of Glucocorticoids

The adrenal cortex secretes glucocorticoids (mainly cortisol). Glucocorticoids stimulate gluconeogenesis (synthesis of glucose from non-carbohydrate precursors like amino acids and glycerol), lipolysis, and proteolysis, while inhibiting cellular uptake and utilization of amino acids.

Step 2

Evaluate Glucagon (Statement 2)

Glucagon is secreted by alpha-cells of the islets of Langerhans; it stimulates glycogenolysis and gluconeogenesis, acting as a HYPERglycemic hormone. Statement (2) incorrectly asserts it causes hypoglycemia.

Step 3

Evaluate Insulin Target Tissues (Statement 3)

Insulin acts primarily on hepatocytes (liver cells) and adipocytes (adipose tissue cells), stimulating cellular glucose uptake and glycogenesis. It does not act autocrinely on pancreatic cells.

Step 4

Evaluate Insulin Glycemic Impact (Statement 4)

Insulin promotes rapid movement of glucose from blood to hepatocytes and adipocytes, resulting in a decrease in blood glucose levels (HYPOglycemia). Statement (4) claims it causes hyperglycemia, which is false.

⭐

360° Option Elimination Engine Key Feature

Diagnose every choice: Know exactly why the right option works and why distractors fail.

4-Option Deep Scan

1 A

✓ 100% Correct

Verdict & Scientific Reason:

Factually exact; cortisol stimulates gluconeogenesis to elevate blood glucose levels.

💡

Why this is airtight: None; verbatim NCERT statement.

2 B

✗ Incorrect

Verdict & Scientific Reason:

Incorrect; glucagon raises blood glucose and is associated with HYPERglycemia.

⚠️

Student Fallacy (Why candidates pick this trap): Confusing glucagon (hyperglycemic) with insulin (hypoglycemic).

3 C

✗ Incorrect

Verdict & Scientific Reason:

Incorrect; insulin targets hepatocytes and adipocytes to enhance peripheral glucose clearance, not pancreatic cells.

⚠️

Student Fallacy (Why candidates pick this trap): Assuming insulin acts on the cells that synthesize it.

4 D

✗ Incorrect

Verdict & Scientific Reason:

Incorrect; insulin lowers blood glucose and is associated with HYPOglycemia.

⚠️

Student Fallacy (Why candidates pick this trap): Inverting insulin's hypoglycemic action.

⚠️

NTA Trap Alert: Hyperglycemic vs Hypoglycemic Hormones

Hyperglycemic hormones: Glucagon, Cortisol, Epinephrine, GH (raise blood sugar). Hypoglycemic hormone: INSULIN (the only major hormone that lowers blood sugar).

🛡️ How to avoid the -1 mark: Remember: Glucagon = Glucose Gone Up; Insulin = Inserts glucose into cells (lowers blood sugar)!

📖

Core NEET Syllabus Standard

Zoology · Chemical Coordination and Integration Standard Benchmark

Core Scientific Principle Tested:

Syllabus Focus: Metabolic Actions of Hormones: Glucocorticoids, Glucagon and Insulin

✓ Core NEET UG Syllabus Anchor Syllabus & Academic Standards ↗

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NEET 2020 Zoology Question 81 Solution

Question

The 30-Second Exam Hall Shortcut: ⚡ "Cortisol Stimulates Gluconeogenesis; Glucagon = Hyperglycemia; Insulin = Hypoglycemia!"

Step-by-Step Rigorous Workflow & Mathematical Proof

Physiological Functions of Glucocorticoids

Evaluate Glucagon (Statement 2)

Evaluate Insulin Target Tissues (Statement 3)

Evaluate Insulin Glycemic Impact (Statement 4)

360° Option Elimination Engine Key Feature

NTA Trap Alert: Hyperglycemic vs Hypoglycemic Hormones

Core NEET Syllabus Standard

Ready to attempt under real exam pressure?

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