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Assertion : Peptides and polypeptide hormones directly pass across the lipid bilayer of plasma membrane.
Reason : Oxytocin hormones can pass across the plasma membrane.a. If both Assertion and Reason are true and Reason is the correct explanation of Assertion
b. If both Assertion and Reason are true, but Reason is not the correct explanation of Assertion
c. If Assertion is true, but Reason is false
d. Both Assertion and Reason are false
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1. Peptide and polypeptide hormones such as oxytocin and vasopressin are water-soluble hormones.
2. They are composed of amino acids and have hydrophilic properties.
3. As a result, they cannot pass through the lipid bilayer of cell membranes, which is composed of hydrophobic fatty acids.
4. In order to exert their effects on target cells, these hormones bind to specific receptors on the cell membrane.
5. This binding triggers a cascade of intracellular signaling events that ultimately lead to the desired physiological response.
6. Examples of such responses include contraction of smooth muscle (as in the case of oxytocin), or water reabsorption in the kidneys (as in the case of vasopressin).
7. Overall, water-soluble hormones like peptides and polypeptides play important roles in regulating a variety of physiological processes in the body.
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Question Text | Assertion : Peptides and polypeptide hormones directly pass across the lipid bilayer of plasma membrane. Reason : Oxytocin hormones can pass across the plasma membrane.a. If both Assertion and Reason are true and Reason is the correct explanation of Assertion b. If both Assertion and Reason are true, but Reason is not the correct explanation of Assertion c. If Assertion is true, but Reason is false d. Both Assertion and Reason are false |
Topic | Control and coordination |
Subject | Biology |
Class | Class 11 |
Answer Type | Text solution:1 |