Punjab 9th Class Biology Chapter 7 Bioenergetics Punjab 9th Class

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Question 1 of 18

Biology

1. The incomplete oxidation of glucose in the absence of oxygen:

Fermentation

Glycolysis

Aerobic Respiration

Anaerobic Respiration

Question 1 of 18

Question 2 of 18

2. The anaerobic respiration in which the pyruvic acid is further broken into carbon dioxide and ethyl alcohol?

Anabolism

Starch

Alcoholic Fermentation

Catabolism

Question 2 of 18

Question 3 of 18

3. When a plant was kept in darkness for many days its leaves turned yellow. Why?

Leaves could not get oxygen and so there was no respiration

Leaves could not get light and so there was no respiration

Leaves could not get light and so there was no photosynthesis

Leaves could not get oxygen and so there was no photosynthesis

Question 3 of 18

Question 4 of 18

4. The study of energy relationships and energy transformations (conversions) in living organisms:

Bioenergetics

Dark Reaction

Light Reaction

Photolysis

Question 4 of 18

Question 5 of 18

5. How many molecules of CO₂ are produced when Krebs cycle operates once?

03

06

01

02

Question 5 of 18

Question 6 of 18

6. In which of the following metabolic processes, oxidation as well as reduction of molecules occur?

Photosynthesis

None of these

Respiration

Both

Question 6 of 18

Question 7 of 18

7. When we work hard we suffer from muscle fatigue because muscle cells;

Carry out anaerobic respiration and so accumulate more CO₂

Carry out aerobic respiration at faster rate and so are tried

Carry out aerobic respiration and so accumulate Lactic acid

Carry out anaerobic respiration and so accumulate lactic acid

Question 7 of 18

Question 8 of 18

8. Adenosine Triphosphate; The energy currency for cells; Formed of Adenine, Ribose and phosphate group:

AMP

FAB

ATP

ADP

Question 8 of 18

Question 9 of 18

9. Which of these can enter into Krebs cycle?

Pyruvic acid

Citric acid

Glucose

Acetyl Co-A

Question 9 of 18

Question 10 of 18

10. Chlorophyll pigment absorbs maximum light in wavelengths of;

Red and blue

Green only

Green and blue

Green and red

Question 10 of 18

Question 11 of 18

11. The type of metabolism in which smaller molecules are joined to form larger and complex molecules:

Glycolysis

Catabolism

Starch

Anabolism

Question 11 of 18

Question 12 of 18

12. The green pigments found in the chloroplasts of photosynthetic eukaryotes and in the cytoplasm of photosynthetic prokaryotes:

Mesophyll

Starch

Stroma

Chlorophyll

Question 12 of 18

Question 13 of 18

13. In which of the following steps of respiration, CO₂ is produced?

Krebs cycle

Glycolysis

Electron transport chain

All of these

Question 13 of 18

Question 14 of 18

14. Adenosime Monophosphate; Formed of an Adenine, a Ribose and one phosphate group:

ATP

FAB

AMP

ADP

Question 14 of 18

Question 15 of 18

15. In which component of the leaf cells, chlorophyll is present?

Stroma

Plasma membrane

Thylakoids

Cytoplasm

Question 15 of 18

Question 16 of 18

16. From which bonds of ATP molecule energy is taken?

C-H bonds

P-P bonds

C-N bonds

C-O bonds

Question 16 of 18

Question 17 of 18

17. Oxygen takes part in aerobic respiration in;

Glycolysis

Krebs cycle

Link step between glycolysis and Krebs cycle

Electron transport chain

Question 17 of 18

Question 18 of 18

18. The Dark Reaction; The cyclic reactions in which carbon dioxide is fixed to from carbohydrates, using the energy of ATP and Hydrogen of NADP:

Calvin Cycle

Electron Transport Chain

Glycolysis

Krebs cycle

Question 18 of 18

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