Which compound is a reusable, complex protein that speeds up chemical reactions?
a. starch
b. a sugar
c. a lipid
d. an enzyme

Aflashlight produces light using energy from the batteries. in which order does the energy change form? a. from chemical to electric to light energy b. from electric to light to chemical energy c. from electric to chemical to light energy d. from light to electric to chemical energy

Explain light independent reactions

Nucleic acid certain protein cell membranes certain carbohydrates