The female mosquito is the one that bites (males feed on flower nectar). She requires blood to produce eggs.
Option D is correct.
A synapse is the opening between neurons that neurotransmitters pass through.
This is true. it is called origin.
Enzymes are regulated by more than the binding of small molecules. A second method that is used all the time by eucaryotic cells to regulate a protein's function is the covalent addition of a phosphate group to one of its amino acid side chains. These phosphorylation events can affect the protein in two important ways.
