Which is an example of a negative feedback?
A.
The accumulation of blood platelets, which cause blood clotting, is triggered by a tear in the lining of the blood vessel.
B.
The production of red blood cells, which transport oxygen, is triggered by a low level of oxygen in the blood.
C.
During childbirth, the secretion of hormone oxytocin, which intensifies the contractions, is triggered by uterine contractions.

Question

Which is an example of a negative feedback?
A. 
The accumulation of blood platelets, which cause blood clotting, is triggered by a tear in the lining of the blood vessel.
B. 
The production of red blood cells, which transport oxygen, is triggered by a low level of oxygen in the blood.
C. 
During childbirth, the secretion of hormone oxytocin, which intensifies the contractions, is triggered by uterine contractions.

Gdeinward · Answer

Hello Laci!

Laci · Answer

HI😁😁😊

Gdeinward · Answer

Do you have any ideas?

Laci · Answer

B, maybe I honestly have no idea

Gdeinward · Answer

B is incorrect. Its A:
positive feedback amplifies change while negative feedback reduces change.

Laci · Answer

Oh Ok thanks....👍😀😀😁

Gdeinward · Answer

B and C are positive. I think this is correct, but you should get Dude's advice. He is more familiar with feedback than I.

Gdeinward · Answer

@dude

Laci · Answer

OK

dude · Answer

A is a positive feedback loop D: More blood platelets -> clotting C is also positive Oxytocin encourages more contractions I would say B Lack of blood cells -> produces blood cells

Laci · Answer

@dude Thank You So Much 😁😁😇😉