Describe endocytosis, phagocytosis, pinocytosis, and exocytosis.

Endocytosis: Endocytosis is the process by which cells take in substances from outside of the cell by engulfing them in a vesicle.

Phagocytosis: Phagocytosis, process by which certain living cells called phagocytes ingest or engulf other cells or particles.

Pinocytosis: Pinocytosis, a process by which liquid droplets are ingested by living cells.

Exocytosis: Exocytosis is the process by which a large amount of molecules are released; thus it is a form of bulk transport.

Explanation:

x would be the most and the least would be y because there are more fruit   and seeds than flock z has insects

enzyme active site and substrate specificity

enzymes bind with chemical reactants called substrates. there may be one or more substrates for each type of enzyme, depending on the particular chemical reaction. in some reactions, a single-reactant substrate is broken down into multiple products