Question

Positive feedback inhibition is concerned about

• A. Increase in input
• B. Increase in output
• C. Bringing back output to the normal level
• D. None of the above

Answer 1

The correct option is A Increase in input

• A feedback mechanism for multistep reactions is a biological occurrence wherein the output of a system amplifies the system (positive feedback) or inhibits the system (negative feedback).
• For example, Release of estrogen(input) from the ovaries stimulates the secretion of GnRH from Hypothalamus which in turn stimulates the secretion of LH(product) from the anterior pituitary. This LH further causes the release of more estrogen(input) from the ovaries. Hence increase in input . Thus positive feedback.
• Hence Positive feedback inhibition is concerned about Increase in the input.
  
• So, the correct answer is 'Increase in input'.