Which kinds of proteins are needed for most cellular activities? a. enzymes b. sugars c. nucleic acids d. amino acids

A) enzymes

Explanation:

Enzymes are the molecule that regulates and controls the rate of their chemical reactions in the cell. More of the enzymes also speeds up the cellular activities. Hope this helps.

a

explanation:

many plants naturally reproduce this way, but it can also be induced artificially. horticulturalists have developed asexual propagation techniques that use vegetative plant parts to replicate plants. success rates and difficulty of propagation vary greatly. monocotyledons typically lack a vascular cambium and therefore are harder to propagate.

the real answer is b. scintillation counter