StudentAidUnit 6: Unit 6: Bioenergetics — Mcqs
11th Class Biology · Unit 6: Bioenergetics
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Multiple Choice Questions (Exercise)
1.What main process occurs during the dark reaction of photosynthesis?
2.What is TRUE about glycolysis?
3.Which of the following are produced by the reactions that occur in the thylakoid and consumed by the reactions that occur in the stroma?
4.When deprived of oxygen, yeast cells obtain energy by fermentation, producing CO2, ATP and;
5.Conversion of Glucose 6-phosphate into Fructose 6-phosphate is;
6.In which of the following conversions, ATP is produced?
7.In electron transport chain, FADH:H produces how many ATPs?
8.Which of these is CO2 acceptor during photosynthesis?
9.Which of the following takes the electrons lost by Photosystem I on absorption of light energy?
10.Photosystem-II makes up the electrons lost due to light excitation by taking up the electrons released from,
SLO Based Multiple Choice Questions
Photosynthesis
11.Nearly all the energy used by living organisms on earth comes from:
12.Which is the energy currency of cell:
13.The breaking of one phosphate bond release how much energy.
14.Cells get energy from which process of food
- a Digestion
- b Oxidation
- c Respiration
- d Excretion
15.Which of the following is included in reactant side of photosynthesis?
16.At which movement there is no net gas exchange between leaves and atmosphere:
17.Plants convert how much solar energy into chemical energy
18.The effectiveness of different wavelength of light is determined in terms of:
- a Absorption spectrum
- b Active spectrum
- c Broad spectrum
- d Narrow spectrum
19.The entry of CO2 into the leaves is dependent upon
20.Source of O2 during process of photosynthesis is:
21.In photosynthesis water is split during the process
22.What serves as reducing power for the reduction of CO2 to form sugar
23.Chlorophyll is what type of molecule
24.The central atom of chlorophyll molecule is.
25.A molecule of chlorophyll consists of a hydrophilic head and
26.Chlorophyll absorb mainly.
27.Head of chlorophyll molecule is made of:
28.Porphyrin ring of chlorophyll molecule consists of how many pyrrole rings:
29.In chlorophyll-a, the second pyrrole ring has
30.Carotenoids absorb light energy in which regions:
31.Phycobilins are accessory pigments found in:
32.A graph showing different wavelengths absorbed by a pigment is called
33.Photosystems of photosynthesis pigments are embedded in.
34.Each photosystem consists of a light gathering
35.Photosystem I has which chlorophyll-a molecule in its reaction centre
36.Reaction centre of PS-II has chlorophyll-a, which aborbs best light of
37.The light dependent reaction take place on:
38.Light independent reactions take place in the
39.Which is not part of light dependent reactions of photosynthesis
40.What is not true for non-cyclic photophosphorylation?
41.The main source of atmospheric oxygen is:
42.ATPs are produced through the process of
43.The zigzag pathway taken by electrons through PS-II and PS-I and electron transport chain is called:
44.Cyclic photophosphorylation occurs when Calvin cycle slows down and:
45.There is no production of NADPH and oxygen during
46.During chemiosmosis which structures coupled the redox reaction with synthesis of ATP?
- a Thylakoid membrane
- b Cell membrane
- c F1-particles
- d Cristae
47.Light independent reactions occur in:
48.What is true for dark reactions?
49.Carbon fixation refers to the initial incorporation of CO2 into:
50.The most abundant protein on earth is
51.Calvin cycle is also known as:
52.During reduction phase of Calvin cycle how many NADPH are used:
Cellular Respiration
53.Almost all cells in all organisms use it as energy source:
54.During glycolysis, glucose molecule is split into two molecules of:
55.The energy of 2ATPs is equivalent to
56.As a result of anaerobic respiration one glucose molecule yields only two ATPs which equals to about how much of energy present in it.
57.In yeast during alcoholic fermentation pyruvic acid is further broken down into alcohol and
58.Which process occurs in muscle cells of humans during extreme physical activities and insufficient oxygen
59.During aerobic respiration glucose is completely oxidized into:
60.Enzymes of glycolysis are
61.Which process is common both in photosynthesis and respiration:
62.Which is not essential of glycolysis?
63.Which of the following are interconverted during glycolysis
64.In which of glycolysis Glucose is converted into Glucose-6-PO4:
65.Pyruvic acid can also be turned back into glucose by reversing glycolysis, the process called as:
66.Before entry into Krebs's cycle Pyruvic acid is activated to:
67.Another name for Kreb's cycle is:
68.All steps of citric acid cycle occur in
69.First stable compound of Krebs cycle is
70.How many NADH molecules are formed during Kreb's cycle
71.During electron transport chain the electrons from reduced coenzymes are finally transferred to:
72.How many molecules of ATP are generated during Kreb's cycle
73.Oxidation of one molecule of NADH produces how many ATPs.
74.In substrate level phosphorylation, ATP is produced by:
Photorespiration
75.Photorespiration occurs in green cells in:
76.Photorespiration involves mitochondria chloroplast and:
77.Plants of warmer climates deal with the problem of photorespiration by:
78.CAM metabolism is present in:
79.Which pathway occurs in CAM plants:
- a C-3 pathway
- b C-4 pathway
- c C-3 and C-4 pathway
- d C-2 pathway