Question

The macromolecules in biochemistry are proteins, carbohydrates, lipids, and nucleic acids. What main elements do all of these have in common?

A) carbon and sulfur
B) carbon and hydrogen
C) oxygen and nitrogen
D) oxygen and phosphorus

Answer 1

B) Carbon and hydrogen

Proteins contain a Carbon bonded to COOH and NH3 and a group such as H

Carbon hydrates are composed of Carbon, Hydrogen and Oxygen

Lipids contain a Carbon tail surrounded by hydrogen

Nucleic acids contain a pentose sugar made of hydrogen and oxygen and carbon

Answer 2

Carbon and hydrogen.

Step-by-step explanation:

The living organisms are made up of four main types of macromolecules. These biomolecules are lipids, proteins, carbohydrates and nucleic acids. These biomolecules constitute different elements.

All these biomolecules mainly contains carbon and hydrogen as the main element. The ability of carbon to show tetravalency and its ability to form hydrogen bonds and bonds with other elements.

Thus, the correct answer is option (B).