Negative feedback mechanism

Question 1

What is negative feedback in biological systems?

Answer 1

A process that counteracts a change in a physiological variable, helping to maintain homeostasis.

Question 2

True or False: Negative feedback mechanisms only increase physiological responses.

Answer 2

False

Question 3

Fill in the blank: In a negative feedback loop, an increase in a hormone level typically leads to a __________ in its production.

Answer 3

decrease

Question 4

Which organ is primarily responsible for regulating insulin levels in the body?

Answer 4

Pancreas

Question 5

What role does insulin play in blood glucose regulation?

Answer 5

Insulin lowers blood glucose levels by facilitating its uptake into cells.

Question 6

Multiple Choice: What happens when blood glucose levels rise after eating?

Answer 6

A) Insulin is secreted to lower blood glucose levels.

Question 7

Short Answer: Describe how negative feedback maintains blood glucose levels.

Answer 7

When blood glucose levels rise, insulin is released, promoting glucose uptake, which lowers blood glucose levels, thereby reducing insulin secretion.

Question 8

True or False: Negative feedback mechanisms are essential for maintaining homeostasis.

Answer 8

True

Question 9

What is the effect of glucagon in relation to insulin?

Answer 9

Glucagon increases blood glucose levels, counteracting the effects of insulin.

Question 10

Fill in the blank: The __________ feedback loop involves the secretion of insulin in response to high blood sugar levels.

Answer 10

negative