Which of the Following Is Not a Compound

question 55

Multiple Choice

Which of the following is not a compound?

• A) H₂O
• B) O- _2-
• C) NaCl
• D) CO₂
• E) MgCl₂

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Definitions:

Citric Acid Cycle

A series of chemical reactions used by all aerobic organisms to release stored energy through the oxidation of acetyl-CoA derived from carbohydrates, fats, and proteins into carbon dioxide and chemical energy.

Glucose Molecule

A simple sugar and important energy source in living organisms, serving as a primary substrate for cellular respiration and a basic building block for carbohydrates.

Cellular Respiration

A metabolic process that occurs in cells where oxygen is used to break down glucose, producing ATP as energy for the cell.

NADH

Nicotinamide adenine dinucleotide (NAD) in its reduced form, a key coenzyme in the electron transport chain that generates ATP in cellular respiration.