The hormone pepsin is activated by the
- pH of saliva
- pH of intestine
- pH of stomach
- pH of pancreas.
The Correct Option is C
Solution and Explanation
Top Questions on Mechanism Of Hormone Action
- Match List I with List II.Choose the correct answer from the options given below:
List I List II A. Non-medicated IUD I. Multiload 375 B. Copper releasing IUD II. Progestogens C. Hormone releasing IUD III. Lipper loop D. Implants IV. LNG-20 - NEET (UG) - 2024
- Biology
- Mechanism Of Hormone Action
- Atrial Natriuretic Factor (ANF) acts as a
- KCET - 2023
- Biology
- Mechanism Of Hormone Action
- In the homeostatic control of blood sugar level, which organs function respectively as modulator and effector ?
- KCET - 2006
- Biology
- Mechanism Of Hormone Action
- 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?
Questions Asked in JIPMER exam
- Binomial nomenclature was first introduced by
- JIPMER - 2015
- KCET - 2022
- Diversity In The Living World
- A convex lens $'A'$ of focal length $20\, cm$ and a concave lens $'B'$ of focal length $5\, cm$ are kept along the same axis with a distance $'d'$ between them. If a parallel beam of light falling on $'A'$ leaves $'B'$ as a parallel beam, then the distance $'d'$ in cm will be :
- JIPMER - 2021
- Spherical Mirrors
- A bacterial flagellum is composed of
- JIPMER - 2021
- Prokaryotic Cells
- $2,4-DNP $ test can be used to identify :
- JIPMER - 2021
- Chemical Reactions
- How many moles of acidified $K_2Cr_2O_7$ is required to liberate $6$ moles of $I_2$ from an aqueous solution of $I^-$ ?
- JIPMER - 2020
- Mole concept and Molar Masses
Concepts Used:
Mechanism of Hormone Action
The mechanism of hormone action is categorised into two classes:
Fixed Membrane Receptor Mechanism-
This type of mechanism is represented by the water-soluble hormones that are amines or proteins in the composition like the growth hormone, oxytocin, ADH, etc. These hormones cannot pass via the lipid membrane. They have their earmark receptor on the cell membrane to which the hormone binds. When the hormone sticks or binds to the specific target receptor, the enzyme adenyl cyclase in the cell membrane is charged. This aids in the production of cyclic AMP. cAMP behaves as the secondary messenger. It diffuses through the cell membrane and activates various enzymatic reactions to cause biochemical changes. The target cell acknowledges these changes and cAMP is deactivated by the enzyme phosphodiesterase.
Mobile Receptor Mechanism-
This type of mechanism is represented by lipid-soluble hormones like fatty acids and steroids that can pass very easily through the plasma membrane. They own intracellular receptors. The hormones stick or bind to the target receptor that activates the enzymatic activity of the cell to bring regard to biochemical changes. Transcription of DNA begins with the hormone-receptor complex. The mRNA is transferred into protein. This protein is the source of biochemical changes inside the cell.