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Biochemistry

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Lipid

Question
52 out of 63
 

Heart uses one of following as energy source during starvation



A Glucose
B Acetoacetate

C Fats
D Proteins

Ans. B Acetoacetate

Metabolic profiles of major tissues

Tissues

Metabolic state

Imported fuel

1. Liver

Fed

Fasting

Starvation

Glucose

Fatty acids

Amino acids

2. Muscle

Fed

Fasting

Starvation

Glucose

Fatty acids

Fatty acids

3. Heart

• Fed

• Fasting

• Starvation

Fatty acids

Fatty acids

Ketone bodies

Aceto-acetate

4. Brain

Fed

Fasting

Starvation

Glucose

Glucose

Ketone bodies

a. RBC uses only glucose as fuel. by Glycolysis and Pentose phosphate pathway no mitochondria therefore no citric acid cycle.

b. Heart contains essentially no fuel reserves. Even in fed slate, it uses fatty acids as fuel.

c. Brain normally uses glucose as an exclusive fuel except starvation, when it can adapt to use ketone bodies as an energy source. The brain contains essentially no fuel reserves.

d. Liver produces the ketone-bodies, but cannot use them as fuel.

Lipid Flashcard List

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