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

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Question 1 of 18

Biology

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

None of these

Both

Photosynthesis

Respiration

Question 1 of 18

Question 2 of 18

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

ATP

FAB

ADP

AMP

Question 2 of 18

Question 3 of 18

3. Chlorophyll pigment absorbs maximum light in wavelengths of;

Red and blue

Green and blue

Green only

Green and red

Question 3 of 18

Question 4 of 18

4. 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 photosynthesis

Leaves could not get light and so there was no respiration

Leaves could not get oxygen and so there was no respiration

Leaves could not get light and so there was no photosynthesis

Question 4 of 18

Question 5 of 18

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

Krebs cycle

Glycolysis

Electron transport chain

All of these

Question 5 of 18

Question 6 of 18

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

Photolysis

Dark Reaction

Bioenergetics

Light Reaction

Question 6 of 18

Question 7 of 18

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

Krebs cycle

Glycolysis

Electron Transport Chain

Calvin Cycle

Question 7 of 18

Question 8 of 18

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

Starch

Alcoholic Fermentation

Catabolism

Anabolism

Question 8 of 18

Question 9 of 18

9. Oxygen takes part in aerobic respiration in;

Krebs cycle

Link step between glycolysis and Krebs cycle

Electron transport chain

Glycolysis

Question 9 of 18

Question 10 of 18

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

Stroma

Chlorophyll

Mesophyll

Starch

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:

Catabolism

Anabolism

Starch

Glycolysis

Question 11 of 18

Question 12 of 18

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

C-H bonds

C-N bonds

P-P bonds

C-O bonds

Question 12 of 18

Question 13 of 18

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

ADP

AMP

FAB

ATP

Question 13 of 18

Question 14 of 18

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

Fermentation

Glycolysis

Anaerobic Respiration

Aerobic Respiration

Question 14 of 18

Question 15 of 18

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

02

03

06

01

Question 15 of 18

Question 16 of 18

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

Stroma

Plasma membrane

Thylakoids

Cytoplasm

Question 16 of 18

Question 17 of 18

17. Which of these can enter into Krebs cycle?

Pyruvic acid

Glucose

Acetyl Co-A

Citric acid

Question 17 of 18

Question 18 of 18

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

Carry out anaerobic respiration and so accumulate lactic acid

Carry out aerobic respiration and so accumulate Lactic acid

Carry out aerobic respiration at faster rate and so are tried

Carry out anaerobic respiration and so accumulate more CO₂

Question 18 of 18

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