Bio Chapter 11
CHAPTER 11
Encircle the correct answers.
1) It is the most electronegative substance and is final acceptor of electrons.
a) Hydrogen b) Oxygen c) Carbon d) Nitrogen
2) Which is raw material for photosynthesis.
a) H O b) CO c) Both a and b d) Glucose
2 2
3) Bioenergetics is the study of energy relationships and energy conversions in
biological systems.
a) Quantitative b) Qualitative c) Numeric d) Chemical
4) Which is a type of chemical link between catabolism and anabolism
a) DNA b) RNA c) NAD d) ATP
5) Photosynthetic pigments are organized into clusters which are present in
a) Thylakoids b) Lamellae
c) Stroma d) Outside chloroplast
6) Light energy is converted into chemical energy in
a) Photosystem b) Antenna complex
c) Reaction center d) Thylakoid
7) The way glucose is metabolized depends on the availability of
a) Oxygen b) Carbondioxide c) Water d) Hydrogen
8) Normally oxidative phosphorylation is coupled with
a) Glycolysis b) Fermentation c) Krebs cycle d) Respiratory chain
9) Which is the most abundant protein in chloroplast
a) Ribose b) Ribulose c) Rubisco d) NAD
10) How many molecules of G3P are recycled to regenerate 3 molecules of 5 carbon RuBP in Dark
reaction
a) 1 b) 3 c) 5 d) 6
11) Energy from glucose molecules is slowly released by
a) Fats b) Enzymes c) Coenzymes d) Both b and c
12) In Glycolysis, glyceraldehydes 3-phosphate is interconvertible with 3 carbon ketonic formula
a) Fructose 6-Phosphate b) 2-Phosphoglycerate
c) Phosphoenol pyruvate d) Dihydroxyacetone phosphate
13) In Krebs cycle, NAD+ forms NADH which then transfers hydrogen atom to
a) Electron Transport chain b) Respiratory chain
c) Both a and b d) Glycolysis
14) In electron transport chain, NADH is oxidized by
a) Cytochrome complex b) Cytochrome a
3
c) Coenzyme Q d) Both a and c
15) Photosystem II has chlorophyll a which absorbs maximum light of wavelength
a) 700 nm b) 680 nm c) 550 nm d) 350 nm
16) Air contains 0.03 – 0.04% gas called
a) Nitrogen b) Carbonmonoxide
c) Carbon Dioxide d) Hydrogen
17) Which cells do not have chloroplasts:
a) Lower epidermis cells b) Palisade mesophyll cells
c) Spongy Mesophyll cells d) Guard cells
18) According to Van Neil, which is the source of oxygen as a By-product of photosynthesis
a) Carbon Dioxide b) Water
c) Carbon Monoxide d) Nitrogen Dioxide
19) All organisms need free for keeping themselves alive and functioning.
a) Water b) Oxygen c) Nitrogen d) Energy
20) Control of daily rhythmic opening and closing of stomata is located in:
a) Palisade mesophyll b) Spongy mesophyll
c) Guard cells d) Xylem cells
21) Which is not carbon source for aquatic photosynthetic organisms
a) Soluble carbonates b) Gaseous carbon dioxide
c) Bicarbonates d) Dissolved carbondioxide
22) In which parts of human body, lactic acid fermentation takes place
a) Nerve cells b) Muscle cells c) Bone cells d) Liver cells
23) In which type of fermentation, carbon dioxide is formed as a by product
a) Alcoholic b) Lactic acid c) Both d) None of above
24) Which is not part of Dark cycle
a) Carbon fixation b) Reduction
c) Oxidative phosphorylation d) Regeneration of RuBP
25) Prior to entering a mitochondrion, glucose molecule is splitted to form two molecules of
a) Lactic acid b) Acetic acid c) Fumaric acid d) Pyruvic acid
26) How many ATPs are formed when each pair of hydrogen atoms enter respiratory chain?
a) 1 b) 2 c) 3 d) 4
27) Light is in the form of energy called
a) Radiations b) Electromagnetic energy
c) Heat d) Either a or b
28) Krebs was the name of person who discovered Krebs Cycle. He was
a) Chemist b) Biologist c) Biochemist d) Physiologist
29) Cellular respiration is a process
a) Reduction b) Oxidation c) Redox d) Physical
30) Visible light ranges in wavelength from about
a) 380 – 720 nm b) 320 – 750 nm c) 380 – 750 nm d) 300 – 700 nm
31) T.W. Engelmann in 1883 firstly obtained action spectrum on spirogyra. He belonged to
a) England b) America c) Holland d) Germany
32) Which is not wrong for most abundant and most important photosynthetic pigment
a) Xanthophyll b) Carotenoids c) Chlorophyll a d) Chlorophyll b
33) The atom of which element is present in the centre of porphyrin ring in chlorophyll molecule
a) Calcium b) Nitrogen c) Magnesium d) Iron
34) The shape of thylaroids of chloroplast is:
a) Umbrella-like b) Star-like c) Disc-like d) Rod-like
35) Spirogyra belongs to
a) Bacteria b) Fungi c) Protista d) Algae
36) The oxidized chlorophyll is very strong agent.
a) Oxidizing agent b) Reducing agent
c) Both a and b d) Non-reactive
37) How many photons of light are required to excite single electron during light reaction
a) 4 b) 3 c) 1 d) 2
38) What type of energy will be provided by ATP generated by the light reactions for synthesis of
sugar in Dark cycle
a) Electrical b) Chemical c) Mechanical d) Kinetic
39) When rate of water loss is low, green plant performs photosynthesis at its rate
a) Maximum rate b) Optimum rate
c) Minimum rate d) Normal rate
40) It is used to measure relative abilities of photosynthetic pigments to absorb wavelengths of light
a) Thermometer b) Sphygmomanometer
c) Barometer d) Spectrophotometer
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