Home
Class 12
BIOLOGY
Which one is positive feed back mechanis...

Which one is positive feed back mechanism ?
(a) Sexual stimulation
(b) Allosteric inhibition
(c) Blood pressure
(d) Perspiration

A

Sexual stimulation

B

Allosteric inhibition

C

Blood pressure

D

Perspiration

Text Solution

AI Generated Solution

The correct Answer is:
To determine which of the given options represents a positive feedback mechanism, we need to understand the concept of positive feedback in biological systems. ### Step-by-Step Solution: 1. **Understanding Positive Feedback Mechanism**: - A positive feedback mechanism is a process in which the end product of a reaction enhances or increases the original stimulus. This leads to an amplification of the response. 2. **Analyzing the Options**: - **Option (a) Sexual stimulation**: This involves the release of hormones (like oxytocin) that enhance the process of sexual arousal and response, leading to further stimulation. This is a classic example of positive feedback. - **Option (b) Allosteric inhibition**: This refers to the regulation of an enzyme by binding an effector molecule at a site other than the enzyme's active site, which typically inhibits the enzyme's activity. This is a form of negative feedback. - **Option (c) Blood pressure**: The regulation of blood pressure typically involves mechanisms that counteract changes in blood pressure, thus representing a negative feedback system. - **Option (d) Perspiration**: This is a thermoregulatory mechanism where the body cools itself down. When body temperature rises, sweating occurs to cool down, which is also a negative feedback mechanism. 3. **Conclusion**: - After analyzing all options, it is clear that **(a) Sexual stimulation** is the only positive feedback mechanism among the choices provided. ### Final Answer: **(a) Sexual stimulation** ---
Promotional Banner

Topper's Solved these Questions

  • THE LIVING WORLD

    DINESH PUBLICATION ENGLISH|Exercise Check your grasp|12 Videos

  • THE LIVING WORLD

    DINESH PUBLICATION ENGLISH|Exercise Check your grasp|12 Videos

  • THE CELL : THE BASIC UNIT OF LIFE

    DINESH PUBLICATION ENGLISH|Exercise CHECK YOUR GRASP|12 Videos

  • TRANSPORT IN PLANTS

    DINESH PUBLICATION ENGLISH|Exercise CHECK YOUR GRASP|40 Videos

Similar Questions

Explore conceptually related problems

Which is susceptible to feed back inhibition ?

The Feed back mechanism means the inhibition by the:

An adenohypophysis hormone which is regulated by feedback mechanism is (a) TSH (b) Cortisone (c) Calcitonin (d) Oxytocin

Blocking enzyme action through blocking its active sites is (a) Allosteric inhibition (b) Feedback inhibition (c) Competitive inhibition (d) Non-competitive inhibition

The term hematuria is used to describe (a) Internal bleeding (b) Blood in urine (c) Blood cancer (d) Blood poisoning

Which of the options is not appropriate for anxiety disorder? (a) Perspiration occurs (b) Heart beat increases (c) Disorder thought (d) Strong reaction to situation of stress

Which one is group of warm blooded animals? (a) Fishes (b) Amphibians (c) Reptiles (d) Birds

Increase in GFR can be due to : (a) Increase in blood colloidal osmotic pressure (b) Increase in capsular hydrostatic pressure (c) Increase in capillary blood pressure (d) More than one option is correct

Which one of the following proteins is not the part of clotting mechanism of blood?

The appearance of albumin in the urine is most likely due to : (a) Increase in the blood pressure (b) Decrease in the blood osmotic pressure (c) Damage to the Malpighian corpuscles (d) Damage to the proximal convoluted tubules