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| 03 | 9th Class Biology Mcqs Chapter 03 | 04 | 9th Class Biology Mcqs Chapter 03 |
| 05 | 9th Class Biology Mcqs Chapter 05 | 06 | 9th Class Biology Mcqs Chapter 06 |
| 07 | 9th Class Biology Mcqs Chapter 07 | 08 | 9th Class Biology Mcqs Chapter 08 |
| 09 | 9th Class Biology Mcqs Chapter 09 | 10 | 9th Class Biology Mcqs Chapter 10 |
| 11 | 9th Class Biology Mcqs Chapter 11 | 12 | 9th Class Biology Mcqs Chapter 12 |
CHAPTER 7
BIOENERGETICS
Encircle the most appropriate answer from the following options
1. Food contains energy in its bonds in the form of:
(a) Kinetic energy
(b) Potential energy
(c) Mechanical energy
(d) All of these
2. The loss of electrons is called:
(a) Oxidation
(b) Reduction
(c) Redox
(d) Both a &b
3. Gain of electrons is called:
(a) Oxidation
(b) Reduction
(c) Redox
(d) Both a &b
4. ATP was discovered by:
(a) Fritz Lipmann
(b) Karl Lohmann
(c) Malvin Calvin
(d) Sir Hans Krebs
5. ATP was discovered in:
(a) 1923
(b) 1925
(c) 1927
(d) 1929
6. ATP is an example of:
(a) Amino acid
(b) Fatty acid
(c) Nucleic acid
(d) Nucleotide
7. The ATP was proposed to be the main energy transfer molecule in the cell by:
(a) Fritz Lipmann
(b) Karl Lohmann
(c) Malvin Calvin
(d) Sir Hans Krebs
8. Each ATP molecule has subunits:
(a) Two
(b) Three
(c) Four
(d) Five
9. Number of phosphate groups in ATP molecule:
(a) One
(b) Two
(c) Three
(d) Four
10. From which bond of A.T.P. molecule energy is taken?
(a) C-N bond
(b) C-O bond
(c) C-H bond
(d) P-P bond
11. The covalent bond connected to two phosphate is:
(a) Ratio
(b) Proportion
(c) Colon
(d) Tilde
12. How much energy is released by breaking of one phosphate bond of ATP?
(a) 7100 calories
(b) 7200 calories
(c) 7300 calories
(d) 7400 calories
13. When one inorganic phosphate is detached from ATP, it is converted into:
(a) ADP
(b) AMP
(c) Both a&b
(d) None
14. Photosynthesis is:
(a) Anabolic process
(b) Catabolic process
(c) Both (a) and (b)
(d) Physical process
15. In which process oxygen is released as a by-product?
(a) Photosynthesis
(b) Respiration
(c) Fermentation
(d) Reproduction
16. Light reactions take place on:
(a) Thylakoid membranes
(b) Stroma of chloroplasts
(c) Mitochondria
(d) All of these
17. Dark reactions take place in:
(a) Thylakoid membranes
(b) Stroma of chloroplasts
(c) Mitochondria
(d) All of these
18. NADPH is formed during:
(a) Light reactions
(b) Dark reactions
(c) Both (a) & (b)
(d) None of these
19. The break down of water molecule during light reactions is called:
(a) Glycolysis
(b) Kreb’s Cycle
(c) ETC
(d) Photolysis
20. The details of dark reactions were discovered by:
(a) Karl Lohmann
(b) Fritz Lipmann
(c) Melvin Calvin
(d) All of these
21. When was Calvin awarded Nobel Prize?
(a) 1960
(b) 1961
(c) 1962
(d) 1963
22. Photosynthetic pigments are arranged in the form of clusters called:
(a) Carotenoids
(b) Chlorophyll-a
(c) Chlorophyll-b
(d) Photosystems
23. Main photosynthetic pigment:
(a) Carotenoids
(b) Chlorophyll-a
(c) Chlorophyll-b
(d) All of these
24. Sun light is absorbed by:
(a) Flower
(b) Stem
(c) Chlorophyll
(d) Roots
25. Chlorophyll pigment absorbs maximum light in wavelengths of:
(a) Green and blue
(b) Green and red
(c) Green
(d) Red and blue
26. Which one factor does not affect the rate of photosynthesis?
(a) Light
(b) Temperature
(c) Humidity
(d) C02\
27. From which bond of food energy is taken?
(a) P-P bonds
(b) C-H bonds
(c) C-N bonds
(d) C-O bonds
28. The greatest fuel of energy of cellular respiration is:
(a) Glucose
(b) Proteins
(c) Amino acid
(d) Lipids
29. In cellular respiration, food is oxidized to:
(a) C02
(b) H20
(c) Both a & b
(d) CO
30. The most common fuel used by cell to get energy from cellular respiration is:
(a) Glucose
(b) Oxygen
(c) Carbon dioxide
(d) Food
31. Through which process organism gets energy?
(a) Photosynthesis
(b) Respiration
(c) Transpiration
(d) Evaporation
32. Alcoholic fermentation occurs in:
(a) Bacteria
(b) Yeast
(c) Both (a) and (b)
(d) Humans
33. Whose fermenting powers are used for making cheese and yogurt?
(a) Bacteria
(b) virus
(c) Fungi
(d) Algae
34. In which phase of respiration glucose molecule is broken in to two molecules of pyruvic Acid?
(a) Glycolysis
(b) Krebs cycle
(c) Electron transport chain
(d) None of these
35. Soy sauce is made through the fermentation by a fungus:
(a) Rhizopus
(b) Penicillium
(c) Aspergillus
(d) All of these
36. How many stages are present in aerobic respiration?
(a) 1
(b) 2
(c) 3
(d) 4
37. Process of glycolysis is found in:
(a) Ribosomes
(b) Cytoplasm
(c) Golgi complex
(d) Vacuole
38. In electron transport chain each NADH produces:
(a) 2 ATP
(b) 3 ATP
(c) 4 ATP
(d) 5 ATP
39. In which step of respiration C02 is produced?
(a) Glycolysis
(b) Krebs cycle
(c) Electron transport chain
(d) All of these
40. How many molecules of C02 are produced when kreb’s cycle operates once?
(a) 6
(b) 3
(c) 2
(d) 1
41. How many ATP molecules are generated in aerobic respiration?
(a) 2
(b) 24
(c) 34
(d) 36
42. In cell, aerobic respiration sites are:
(a) Golgi bodies
(b) Mitochondria
(c) Ribosomes
(d) Chloroplast
43. How many ATP molecules are generated in anaerobic respiration?
(a) 2
(b) 24
(c) 34
(d) 36
44. Krebs cycle and electron transport chain occur in:
(a) Cytoplasm
(b) Nucleus
(c) Mitochondria
(d) Ribosomes