When pancreas stops secreting insulin into the bloodstream?
a) when glucose uptake by cells increases
b) when glucose blood level decreases
c) when glucose level in the blood increases
d) both a and b
Which of the following response/s is/are to amplify the change in the variable?
a) negative feedback
b) positive feedback
c) both a and b
d) none of these
Explanation Positive feedback mechanisms control self-perpetuating events that can be out of control and do not require continuous adjustment.
…….is the example of positive feedback.
a) blood clotting
b) insulin glucose level
c) both a and b
d) none of these
Explanation When tissue is torn or injured, a chemical is released. This chemical causes platelets in the blood to activate. Once these platelets have activated, they release a chemical which signals more platelets to activate, until the wound is clotted
Which of the following has/have a destabilizing effect so does not result in homeostasis?
a) negative feedback
b) positive feedback
c) both a and b
d) none of these
Which of the following is/are less common but has/have its/theirs applications?
a) negative feedback
b) positive feedback
c) both a and b
d) none of these
Which of the following enables childbirth?
a) negative feedback
b) positive feedback
c) both a and b
d) none of these
