The Question is from neet-zoology , and it was created by the author T HARITHA

Question

Which characteristic distinguishes the mechanism of action of peptide hormones from steroid hormones?

T HARITHA · Accepted Answer

## CORE INFORMATION
✓ **Answer**: [C]
## CONCEPT FRAMEWORK
	**Primary Concept**: Mechanism of Action of Hormones
	**Related Topics**: Endocrine System, Hormonal Signaling
	**Prerequisites**: Knowledge of hormone types and their receptors
## SOLUTION PATHWAY
**Given Information**:
		- Peptide hormones act primarily through cell surface receptors.
		- Steroid hormones bind to intracellular receptors.
**Method & Steps**:
	1. Identify the main differences in receptor types for peptide and steroid hormones.
		Reasoning: Peptide hormones are typically hydrophilic and cannot cross the cell membrane, hence they bind to receptors on the cell surface.
		Formula/Rule: None applicable here, but the concept of receptor location is key.
	2. Recognize that steroid hormones are lipophilic and can pass through the cell membrane.
		Working: Steroid hormones bind to receptors in the cytoplasm or nucleus, leading to direct regulation of gene expression.
		Key Point: The distinction lies in the receptor location and subsequent signaling pathways.
	3. Conclude that the primary mechanism of action for peptide hormones is through cell surface receptors, contrasting with the intracellular action of steroid hormones.
		Result: The correct characterization of peptide and steroid hormones is established.
		Verification: Cross-reference with standard endocrinology resources.
## OPTION ANALYSIS
[A] :x: Peptide hormones do not directly regulate gene expression; they usually activate second messenger systems.
[B] :x: This is incorrect because peptide hormones bind to cell surface receptors, not the other way around.
[C] ✓: Correct! Peptide hormones primarily act through cell surface receptors, while steroid hormones bind to intracellular receptors, leading to different mechanisms of action.
[D] :x: Incorrect; peptide and steroid hormones utilize distinct receptor types and signaling pathways.
## LEARNING AIDS
	**Common Mistakes**:
		1. Confusing the receptor types: Remember that peptide = cell surface; steroid = intracellular.
		2. Overgeneralizing hormonal actions: Each type of hormone has a unique pathway and effect.
	**Quick Tips**:
		1. Use mnemonic devices: "Peptide = P for Plasma (surface), Steroid = S for Steroid (inside)."
		2. Remember the general rule: Peptides are fast-acting; steroids are slow but have longer-lasting effects.

T HARITHA · Answer

Peptide hormones directly regulate gene expression, while steroid hormones activate second messenger systems.

T HARITHA · Answer

Peptide hormones bind to intracellular receptors, while steroid hormones act through cell surface receptors.

T HARITHA · Answer

The correct Option is "Peptide hormones primarily act through cell surface receptors, while steroid hormones bind to intracellular receptors."

T HARITHA · Answer

Both peptide and steroid hormones utilize the same receptor types and signaling pathways.

NEET Zoology MCQs

Select Chapter

Question Tags

Question Tags

Question Tags

Question Tags

Question Tags

Question Tags

Question Tags

Question Tags

Question Tags

Question Tags

NEET Subjects

Our Bots

Company