Glycogen

Question 1

• readily mobilized storage form of glucose

Answer 1

glycogen

Question 2

A branched polymer of glucose that is mainly produced in liver and muscle cells

Answer 2

glycogen

Question 3

Functions as secondary long-term energy storage in animals

Answer 3

glycogen

Question 4

Glycogen is sometimes referred to as-

Answer 4

animal starch

Question 5

an analogue of starch in plants, only it is extensively branched.

Answer 5

glycogen

Question 6

a hormone needed to break down glycogen

Answer 6

glucagon

Question 7

can also be found in scallops and oysters

Answer 7

glycogen

Question 8

are usually restricted in the diets of patients with diabetes due to their high glycogen content

Answer 8

liver

oysters

Question 9

Reasons for storing glycogen as a fuel

Answer 9

• serves as a buffer to maintain blood-glucose levels
• glucose from glycogen is readily mobilised and is therefore a good source of energy for sudden, strenuous activity
• Unlike fatty acids, the released glucose can provide energy in the absence of oxygen and can thus supply energy for anaerobic activity
• Glycogen in the body can be used up rapidly in emotional reactions like fear and anger, and during excessive exercise

Question 10

Glycogen storage sites

Answer 10

mainly in liver and muslces

more content in liver than muscles

Question 11

amount of total body glycogen in muscle

Answer 11

three-quarters

Question 12

glycogen function in liver

Answer 12

synthesis and breakdown of glycogen is regulated to maintain blood glucose levels

Question 13

glycogen function in muscle

Answer 13

synthesis and breakdown of glycogen is regulated to meet the energy requirements of the muscle cell

Question 14

Glycogen formed in the body cells from molecules of glucose

Answer 14

glycogenesis

Question 15

Glycogen when hydrolysed into glucose

Answer 15

glycogenolysis

Question 16

Parts of glycogen

Answer 16

Nonreducing end
Reducing end
Branch point

Question 17

is a reaction involving the breaking of a bond in a molecule using water

Answer 17

Hydrolysis

Question 18

the reaction mainly occurs between an ion and water molecules and often changes the pH of a solution

Answer 18

Hydrolysis

Question 19

3 main types of hydrolysis

Answer 19

salt hydrolysis
acid hydrolysis
base hydrolysis

Question 20

used to hydrolyze glycogen (acid hydrolysis)

Answer 20

HCl

Question 21

Tests performed before hydrolysis

Answer 21

Benedict’s test

Iodine test

Question 22

Components of Benedict’s test before hydrolysis

Answer 22

Benedict’s Soluction

+ glycogen solution

Question 23

result of Benedict’s test before hydrolysis

Answer 23

Negative

Question 24

Positive result of benedict’s test before hydrolysis

Answer 24

Brick red ppt

Question 25

Components of Iodine test before hydrolysis

Answer 25

Iodine solution + glycogen solution

Question 26

Result of Iodine test before hydrolysis

Answer 26

Positive

Question 27

Positive result of Iodine test before hydrolysis

Answer 27

Reddish brown solution

Question 28

Components of Benedict’s test after hydrolysis

Answer 28

glycogen solution + HCl + neutralize with NaOH + Benedict’s solution

Question 29

Result of Benedict’s test after hydrolysis

Answer 29

Positive

Question 30

Positive result of benedict’s test after hydrolysis

Answer 30

Brick red ppt1

Question 31

Components of Iodine test after hydrolysis

Answer 31

glycogen solution + HCl + neutralize with NaOH + Iodine solution

Question 32

Result of Iodine test after hydrolysis

Answer 32

Negative

Question 33

Positive result of Iodine test after hydrolysis

Answer 33

Reddish brown solution