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Carbohydrate Metabolism and Hormonal Regulation Quiz

#1

Which enzyme is responsible for breaking down glycogen into glucose?

Glycogen phosphorylase
Explanation

Glycogen phosphorylase breaks down glycogen into glucose.

#2

What is the primary role of insulin in carbohydrate metabolism?

To convert glucose into glycogen
Explanation

Insulin's primary role is converting glucose into glycogen.

#3

Which organ primarily stores glycogen in the body?

Liver
Explanation

The liver primarily stores glycogen in the body.

#4

What is the primary storage form of glucose in animals?

Glycogen
Explanation

Glycogen is the primary storage form of glucose in animals.

#5

Which enzyme catalyzes the conversion of glucose-6-phosphate to glucose?

Glucose-6-phosphatase
Explanation

Glucose-6-phosphatase catalyzes the conversion of glucose-6-phosphate to glucose.

#6

Which hormone is responsible for stimulating glycogen breakdown in the liver?

Glucagon
Explanation

Glucagon stimulates glycogen breakdown in the liver.

#7

What is the process by which glucose is converted into pyruvate called?

Glycolysis
Explanation

The process is called Glycolysis.

#8

What is the main source of glucose during fasting periods?

Glycogen stores
Explanation

Glycogen stores are the main source of glucose during fasting.

#9

Which hormone inhibits glycogen synthesis and promotes gluconeogenesis?

Cortisol
Explanation

Cortisol inhibits glycogen synthesis and promotes gluconeogenesis.

#10

What is the process of converting non-carbohydrate sources into glucose called?

Gluconeogenesis
Explanation

The process is called Gluconeogenesis.

#11

Which hormone stimulates glucose uptake in muscle and adipose tissue?

Insulin
Explanation

Insulin stimulates glucose uptake in muscle and adipose tissue.

#12

Which hormone promotes glucose uptake by cells?

Insulin
Explanation

Insulin promotes glucose uptake by cells.

#13

What is the end product of glycolysis under anaerobic conditions in mammalian cells?

Lactic acid
Explanation

Lactic acid is the end product under anaerobic conditions.

#14

Which enzyme catalyzes the rate-limiting step of glycolysis?

Phosphofructokinase-1
Explanation

Phosphofructokinase-1 catalyzes the rate-limiting step of glycolysis.

#15

How does glucagon affect blood glucose levels?

Increases blood glucose levels
Explanation

Glucagon increases blood glucose levels.

#16

What is the primary energy currency of cells?

ATP
Explanation

ATP is the primary energy currency of cells.

#17

Which enzyme is involved in the conversion of pyruvate to acetyl-CoA?

Pyruvate dehydrogenase
Explanation

Pyruvate dehydrogenase is involved in the conversion of pyruvate to acetyl-CoA.

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