What cells are affected by hormones?
a) all cells in the body
b) all cells in the brain
c) all cells that produce hormones
d) all cells that have the right receptor

D all cells that have the right receptor

Explanation:

A is incorrect because not all cells are affected by hormones, B is wrong because hormones travel through the blood and out of the brain so its not only brain cells C is wrong because hormones can attatch to normal target cells and that means D is correct

violet light has a shorter wavelength than blue light. violet light is scattered more than blue light. however, the human eye is less sensitive to violet than to blue. as a result, we perceive a blue sky instead of a violet sky.