What does DNA provide the code for? nitrogenous base pairing
protein synthesis
deoxyribose formation
nucleotide synthesis

The following image is of a diatom. it lives in water and gets food from photosynthesis. it is encased in a hard shell made of something similar to glass or sand . a diatom is a(n) because it has a) multi-celled organism; specialized parts. b) vertebrate; a skeleton. c) insect; an exoskeleton. d) single-called organism; only one cell.

What does it mean for a cell membrane to be selectively permable

Which of the following human activities resulted in the growth of the north american deer population?