Question

1. living things contain molecules that are considered to be organic. this means they contain which element?

a. carbon
b. hydrogen
c. sulfur
d. phosphorus

Explanation:

Organic molecules are defined as molecules that contain carbon (along with other elements like hydrogen, oxygen, etc., in most cases). Carbon is the key element that defines organic compounds, as it can form stable covalent bonds with itself and other elements, allowing for the complex structures needed for biological molecules. Hydrogen, sulfur, and phosphorus are present in some organic molecules but are not the defining element of organic compounds.

Answer:

A. Carbon