Which of these organic molecules functions to speed up biological chemical reactions?
a. lipids
b. enzymes
c. nucleic acids
d. carbohydrates

The enzymes has an important function which is help to speed up bological chemical reactions.

Explanation:

Enzymes are a type of protein called catalysts. Its function is to accelerate chemical reactions without modifying, which means that it can be used, again and again.

The carbohydrates represent the cell's energy source while lipids serve as an energy reserve. The nucleic acids constitute the fundamental repository of genetic information, especially DNA

answer; i believe the correct answer is (replication is not conservative);

answer; ///(b) it is composed of four protein chains and four heme groups;