Chapter 7 | Carbohydrate Metabolism | September 30, 2024 | Class 8

Question 1

Family of polyhydric aldehydes and polyhydric ketones

Answer 1

Carbohydrates

Question 2

Carbohydrates are also known as

Answer 2

Sugars

Question 3

Other substances can be used to obtain glucose through

Answer 3

Gluconeogenesis

Question 4

Only single unit sugars can be absorbed _______

Answer 4

directly

Question 5

Carbohydrate is mainly digested in the

Answer 5

Small intestine

Question 6

A small amount of carbohydrate is digested in the

Answer 6

mouth

Question 7

________ cannot be decomposed or absorbed, however, it can stimulate intestinal peristalsis

Answer 7

Cellulose

Question 8

The Anaerobic Degradation of Glucose Pathway is also called

Answer 8

Glycolysis pathway

Question 9

There are ____ stages of glycolysis

Answer 9

2

Question 10

Stage I of glycolysis involves the conversion from

Answer 10

Glucose to pyruvate

Question 11

Stage II of glycolysis involves the conversion from

Answer 11

Pyruvate to lactate

Question 12

The sub-cellular space where glycolysis occurs is the

Answer 12

Cytoplasm

Question 13

Stage I of glycolysis

Answer 13

1. Phosphorylation of glucose to G-6-P
2. G-6-P to F-6-P
3. F-6-P to F-1,6-2P
4. F-1,6-2P cleaved into DHAP and GAP
5. DHAP to GAP
6. Oxidation of GAP to Glycerate 1,3-bisphosphate (Dehydrogenation reaction)
7. Glycerate 1,3-bisphosphate to Glycerate 3-phosphate (Substrate level phosphorylation)
8. Glycerate 3-phosphate to Glycerate 2-phosphate
9. Glycerate 2-phosphate to PEP (water molecule is released) (phosphate group turns into a high energy phosphate group)
10. Another substrate level phosphorylation

Question 14

Irreversible reactions in stage I of Glycolysis take place in steps

Answer 14

1,3 and 10

Question 15

Stage II of Glycolysis

Answer 15

Lactate is produced using the NADH and H from the previous reaction in step 6

Question 16

1 molecule of glucose yields _____ molecules of ATP

Answer 16

2