Which transport mechanisms require the formation of a vesicles to transport material into or out of the cell? a: diffusion and osmosis b: exocytosis and calcium pumps c: exocytosis and endocytosis d: diffusion and facilitated diffusion

If you are in a chronic state of anxiety but also suffer from moment of sudden, intense fear you are problably suffering. from

Amines amides and amino acids are categories of

Pls me i need this ! each cell has genes activated depending on it's job and what kind of cell it is. it is the presence of that causes the repressor protein to fall off and unblock the gene on the lac operon. if a gene is turned on then it is being an additional circular chromosome found in some bacteria that is used in genetic engineering.