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

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Question 1 of 18

Biology

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

Thylakoids

Plasma membrane

Cytoplasm

Stroma

Question 1 of 18

Question 2 of 18

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

Glycolysis

Electron Transport Chain

Calvin Cycle

Krebs cycle

Question 2 of 18

Question 3 of 18

3. Oxygen takes part in aerobic respiration in;

Glycolysis

Krebs cycle

Electron transport chain

Link step between glycolysis and Krebs cycle

Question 3 of 18

Question 4 of 18

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

01

03

06

02

Question 4 of 18

Question 5 of 18

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

ATP

AMP

FAB

ADP

Question 5 of 18

Question 6 of 18

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

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 more CO₂

Carry out anaerobic respiration and so accumulate lactic acid

Question 6 of 18

Question 7 of 18

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

P-P bonds

C-N bonds

C-H bonds

C-O bonds

Question 7 of 18

Question 8 of 18

8. Chlorophyll pigment absorbs maximum light in wavelengths of;

Red and blue

Green and blue

Green only

Green and red

Question 8 of 18

Question 9 of 18

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

Both

Respiration

None of these

Photosynthesis

Question 9 of 18

Question 10 of 18

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

Krebs cycle

Electron transport chain

All of these

Glycolysis

Question 10 of 18

Question 11 of 18

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

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

Leaves could not get oxygen and so there was no respiration

Question 11 of 18

Question 12 of 18

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

Light Reaction

Photolysis

Dark Reaction

Bioenergetics

Question 12 of 18

Question 13 of 18

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

Starch

Mesophyll

Chlorophyll

Stroma

Question 13 of 18

Question 14 of 18

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

Glycolysis

Fermentation

Aerobic Respiration

Anaerobic Respiration

Question 14 of 18

Question 15 of 18

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

ATP

ADP

FAB

AMP

Question 15 of 18

Question 16 of 18

16. Which of these can enter into Krebs cycle?

Acetyl Co-A

Glucose

Citric acid

Pyruvic acid

Question 16 of 18

Question 17 of 18

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

Catabolism

Anabolism

Alcoholic Fermentation

Starch

Question 17 of 18

Question 18 of 18

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

Starch

Anabolism

Glycolysis

Catabolism

Question 18 of 18

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