4. Which enzyme facilitates the movement of chemical groups from one molecule to another? isomerases
transferases
oxidoreductases
hydrolases

The correct answer is - transferases.

Explanation:

As it is suggested and self-explanatory that these enzymes facilitate the transfer of the chemical or functional groups from a donor molecule to another molecule (acceptor). These functional groups can be acyl, carbonyl, carboxyl, and any other functional group.

Acyl transferases is an example of this enzyme that catalyzes the transfer of the acyl group from the donor molecule to the acceptor molecule in a chemical reaction.

i think a) betsy can donate only blood to mark is correct because, mark and betsy have the same blood type. whereas nobody else has b+ blood so betsy can't donate to them.

i think the answer is gold im not entirely sure