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Lipids

Question 4 • PA Human Anatomy & Physiology A 2026-2027 SMITH IC

Are used for main source of energy

Answer
A
Carbohydrates
B
Lipids
C
Proteins
D
Nucleic acids

Explanation

Carbohydrates are the body’s main source of energy. They are broken down into glucose, which cells use to release energy. Lipids can also provide energy, especially during longer-term energy storage, but carbohydrates are the primary source.

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