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

sadness is not good

explanation:

the earth is thought to have been formed about 4.6 billion years ago by collisions from a cloud of hydrogen, helium, rock, ice and other materials. these were pulled together by gravity to form objects in and around earth like- asteroids and small early planets called planetesimals.

so, the best possible answer to this question will be option d- to harden materials to form different parts of earth’s layers