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Biochemistry

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Carbohydrates

Question
36 out of 40
 

Glycogen in which part of the body cannot contribute directly to Blood Glucose? (AIPG 2008)



A Liver
B Muscle

C Both
D None

Ans. B Muscle

Muscle Glycogen cannot contribute directly to plasma glucose since muscle lacks glucose 6-phosphatase

Comments

a. The primary purpose of muscle glycogen is to provide a source of Glucose-6-phosphate for energy yielding metabolism in muscle itself.

b. The major metabolic pathways in muscle are:

c. Fast Twitch (type I) Muscle-Glycolysis

d. Slow Twitch (type II) Muscle – beta oxidation and TCA

Type I Type II

a. Other names Slow, red, Oxidative Fast, White, glycolytic

b. Function For long, slow For fine, skilled contractions movement

c. Fatigability Fatigue late Fatigue early

d. Myosin ATPase Slow Fast activity

e. Ca++ pumping Moderate High capacity of sarcoplasmic reticulum

f. Diameter Moderate Large

g. Glycolytic capacity Moderate High

h. Oxidative capacity High Low

i. Examples Back muscles Extra ocular muscles

Carbohydrates Flashcard List

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