Question

multiple choice question
phosphorous is a component of which of the following?

dna

stomach acid

glucose

Explanation:

To determine which option contains phosphorus, we analyze each:

• DNA: The structure of DNA (deoxyribonucleic acid) includes a phosphate group, which contains phosphorus (P). The backbone of DNA is made of sugar - phosphate units, so phosphorus is a component of DNA.
• Stomach acid: Stomach acid is mainly hydrochloric acid (HCl), which contains hydrogen (H) and chlorine (Cl), no phosphorus.
• Glucose: The chemical formula of glucose is $C_6H_{12}O_6$, which contains carbon (C), hydrogen (H), and oxygen (O), no phosphorus.

Answer:

A. DNA