Which is not true of lipids? a. they supply cells with energy. b. they form structural parts of cell membranes. c. the carry fat-soluble vitamins to cells. d. they supply cells with nitrogen.

Amylase is an enzyme found in the human digestive system. why do you think it was important to keep the enzyme temperature about 37 degrees celsius (98.6 degrees f)? describe what might happened the temperature decreased by 10 degrees celsius.

What advantages does a pedigree have over a written passage?

Which of the following are causes of evolutionary change? 1)genetic drift 2) natural selection 3) gene flow 4)mutation