Question:
During the hormone action through membrane receptors, the peptide hormones bind to specific receptor molecules to form a complex and release an enzyme _____.
During the hormone action through membrane receptors, the peptide hormones bind to specific receptor molecules to form a complex and release an enzyme _____.
Show Hint
Peptide hormones act through membrane receptors that activate adenylate cyclase, which makes cyclic AMP.
Updated On: Nov 12, 2026
- adenylate cyclase
- carbonic anhydrase
- alkaline phosphatase
- cholinesterase
Show Solution
Verified By Collegedunia
The Correct Option is A
Solution and Explanation
Step 1: Understanding the Concept
Peptide hormones are water-soluble and cannot cross the plasma membrane, so they bind receptors on the cell surface.
Step 2: Signalling
The hormone-receptor complex activates a G-protein, which switches on the enzyme adenylate cyclase. This enzyme converts ATP into cyclic AMP, the second messenger.
Step 3: Why the other options fail
Carbonic anhydrase, alkaline phosphatase and cholinesterase are not part of this hormone signalling pathway.
Final Answer:
The enzyme is adenylate cyclase. \[ \boxed{\text{(A) }\text{adenylate cyclase}} \]
Peptide hormones are water-soluble and cannot cross the plasma membrane, so they bind receptors on the cell surface.
Step 2: Signalling
The hormone-receptor complex activates a G-protein, which switches on the enzyme adenylate cyclase. This enzyme converts ATP into cyclic AMP, the second messenger.
Step 3: Why the other options fail
Carbonic anhydrase, alkaline phosphatase and cholinesterase are not part of this hormone signalling pathway.
Final Answer:
The enzyme is adenylate cyclase. \[ \boxed{\text{(A) }\text{adenylate cyclase}} \]
Was this answer helpful?
0
0
Top MHT CET Biology Questions
- During r- DNA technology, which one of the following enzymes is used for cleaving DNA molecule ?
- Important sperm lysin used for dissolving egg covering is
- In biogas plant, the role of acidogenic bacteria is to
- In $C_{3}$ plants, the first stable product of photosynthesis during the dark reaction is
- In case of anaerobic respiration, the RQ is ___________
View More Questions
Top MHT CET Mechanism Of Hormone Action Questions
- Which of the following statements best describes the relationship between the hormones ANF and Angiotensin 2 in terms of their physiological effects on the body?
- Identify the group which correctly represents secondary messengers involved in hormone action.
- Which is the correct sequence of hormone action through membrane receptors?
I. Physiological responses e.g. ovarian growth.
II. Generation of secondary messenger.
III. Release of an enzyme adenylate cyclase from the receptor site.
IV. Formation of hormone receptor complex e.g. FSH.
V. Biochemical responses - Which of the following statements about the mode of action of lipid soluble hormones is INCORRECT?
- Which one of the following is NOT a second messenger?
Top MHT CET Questions
- During r- DNA technology, which one of the following enzymes is used for cleaving DNA molecule ?
- In non uniform circular motion, the ratio of tangential to radial acceleration is (r = radius of circle, $v =$ speed of the particle, $\alpha =$ angular acceleration)
- The temperature of $32^{\circ}C$ is equivalent to
- The line $5x + y - 1 = 0$ coincides with one of the lines given by $5x^2 + xy - kx - 2y + 2 = 0 $ then the value of k is
- The heat of formation of water is $ 260\, kJ $ . How much $ H_2O $ is decomposed by $ 130\, kJ $ of heat ?
View More Questions