7 BIOENERGETICS (UHS)

7 BIOENERGETICS (UHS)

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Question 1 of 30

1. Question
Q.1 Oxidative phosphorylation, synthesis of ATP in the presence of oxygen occurs in:
- A) All Types of Cells
- B) All Anaerobic Cells
- C) All Primitive Cells
- D) All Aerobic Cells
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Question 2 of 30

2. Question
Q.2 Glycolysis is the breakdown of glucose into two molecules of
- A) Glycerate
- B) Lactic Acid
- C) Pyruvate
- D) Succinic Acid
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Question 3 of 30

3. Question
Q.3 Before entering Krebs’s cycle, the pyruvate is first decarboxylated and oxidized into
- A) Alpha Ketoglutaric Acid
- B) Citric Acid
- C) Glyceric Acid
- D) Acetic Acid
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Question 4 of 30

4. Question
Q.4 Some electron from the second primary acceptor may pass back to chlorophyll molecules by
electron carrier system, yielding ATP. This process is called
- A) Phosphorylation
- B) Photophosphorylation
- C) Non-Cyclic Phosphorylation
- D) Cyclic Phosphorylation
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Question 5 of 30

5. Question
Q.5 Z-scheme is used for
- A) Non-Cyclic Photophosphorylation
- B) Cyclic Photophosphorylation
- C) Both Cyclic and Non-Cyclic Photophosphorylation
- D) Oxidative Phosphorylation
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Question 6 of 30

6. Question
Q.6 The product(s) of cyclic photophosphorylation is / are:
- A) ATP
- B) NADP
- C) NADP and ATP
- D) NADP, ATP, and O2
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Question 7 of 30

7. Question
Q.7 Total NADH formed by one glucose molecule during Krebs’s Cycle are
- A) 6
- B) 3
- C) 8
- D) 18
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Question 8 of 30

8. Question
Q.8 The terminal electron acceptor in electron transport chain is
- A) Hydrogen
- B) Iron
- C) Cytochrome
- D) Oxygen
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Question 9 of 30

9. Question
Q.9 The end product of glycolysis is
- A) ADP
- B) Reduced FAD
- C) Citric acid
- D) Pyruvate
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Question 10 of 30

10. Question
Q.10 One molecule of FADH2 is produced in Krebs’s cycle during conversion of
- A) Fumarate Malate
- B) Succinate Fumarate
- C) Malate Oxaloacetate
- D) α-Ketoglutarate Succinate
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Question 11 of 30

11. Question
Q.11 Every molecule of NADH, fed into ETC produces:
- A) 2 ATP
- B) 3 ATP
- C) 4 ATP
- D) 6 ATP
Correct

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Question 12 of 30

12. Question
Q.12 Final acceptor of electrons in respiratory chain is:
- A) Cytochrome a
- B) Oxygen
- C) Cytochrome a3
- D) Cytochrome c
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Question 13 of 30

13. Question
Q.13 The end product of anaerobic respiration in humans and other mammals is:
- A) Pyruvic acid
- B) Ethanol
- C) Lactic acid
- D) Glucose
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Question 14 of 30

14. Question
Q.14 A biochemical process which occurs within a cell to breakdown complex compounds to produce
energy is called:
- A) Respiration
- B) Photosynthesis
- C) Oxidation reduction
- D) Photophosphorylation
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Question 15 of 30

15. Question
Q.15 Which part of chlorophyll molecule absorbs light?
- A) Phytol
- B) Porphyrin ring
- C) Pyrrole
- D) Thylakoid membrane
Correct

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Question 16 of 30

16. Question
Q.16 Oxidative phase of glycolysis starts with dehydrogenation of
- A) Glycolysis
- B) Ribulose Bisphosphate
- C) Glyceraldehyde 3-phosphate
- D) NADH
Correct

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Question 17 of 30

17. Question
Q.17 In one turn, the Krebs’s cycle produces one molecule of ATP, one molecule of FADH2 and
__________ molecules of NADH
- A) 1
- B) 2
- C) 3
- D) 4
Correct

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Question 18 of 30

18. Question
Q.18 Which one of the following is the stage of cellular respiration for which oxygen is not essential?
- A) Glycolysis
- B) Pyruvate oxidation
- C) Krebs’s cycle
- D) Electron Transport Chain
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Question 19 of 30

19. Question
Q.19 Pyruvate, the end product of glycolysis moves from cytosol to mitochondrial matrix where it is
oxidized into ___________ producing CO2 as a by-product.
- A) Acetic acid (active)
- B) Citrate
- C) NAD
- D) FAD
Correct

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Question 20 of 30

20. Question
Q.20 Pyruvate Acetyl CoA
- A) FAD+ FADH
- B) NAD+ NADH
- C) NADH NAD + H+
- D) FADH+ FAD + H+
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Question 21 of 30

21. Question
Q.21 In light independent stage of photosynthesis, the CO2 combines with _______ to form an
unstable 6-carbon intermediate.
- A) Ribulose bisphosphate
- B) Hexose sugar
- C) Glycerate-3-phosphate
- D) Glyceraldehyde-9-phosphate
Correct

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Question 22 of 30

22. Question
Q.22 In glycolysis, glycerate-1,3-bisphosphate is converted into glycerate-3-phosphate by losing
_____________ phosphate molecules.
- A) 3
- B) 2
- C) 1
- D) 4
Correct

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Question 23 of 30

23. Question
Q.23 Malate is oxidized by _______ to oxaloacetate in Krebs’s Cycle.
- A) ATP
- B) NADP
- C) NAD
- D) FAD
Correct

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Question 24 of 30

24. Question
Q.24 In electron transport chain, the electrons from NADH and FADH2 are passed to;
- A) Cytochrome a
- B) Cytochrome a3
- C) Co-enzyme c
- D) Co-enzyme Q
Correct

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Question 25 of 30

25. Question
Q.25 Carriers of the respiratory chain are located on:
- A) Matrix of mitochondria
- B) Outer membrane of mitochondria
- C) Inner membrane of mitochondria
- D) Cytoplasmic matrix
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Question 26 of 30

26. Question
Q.26 Each ________ consists of a light gathering antenna complex and reaction center.
- A) Chlorophyll
- B) Photosystem
- C) Photon
- D) Electron
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Question 27 of 30

27. Question
Q.27 Photosystem I has chlorophyll a molecules which absorb maximum light of:
- A) 680 nm
- B) 780 nm
- C) 700 nm
- D) 580 nm
Correct

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Question 28 of 30

28. Question
Q.28 Cyclic flow or C4 photosynthesis produces:
- A) ATP and CO2
- B) ATP
- C) Only CO2
- D) Only Oxygen
Correct

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Question 29 of 30

29. Question
Q.29 Immediate product formed after CO2 fixation in Calvin Cycle is:
- A) Unstable 6-carbon compound
- B) Unstable 5-carbon compound
- C) Unstable 4-carbon compound
- D) Unstable 3-carbon compound m
Correct

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Question 30 of 30

30. Question
Q.30 Functional group of chlorophyll a is:
- A) —CH3
- B) —CHO
- C) —COOH
- D) —OH
Correct

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