Bioenergetics MCQ
1) Identity the incorrect statements regarding respiration
a) it occurs in all organisms
b) it occurs in nuclues
c ) it does not require light source
d )All of them are true
Ans. Occurs in nuclues
2) In a process of cellular respiration 180 ATP molecules are produced, how many moles of glucose consume during this process.
a) 2 b) 5 c) 8 d) 10
Ans. 5
3) Identity the incorrect statements regarding photosynthesis
a) It occurs only in chlorophyll containing organisms.
b) It occurs in chloroplast.
c) One of the product is maltose
d )The reactants are Carbon dioxide and water.
Ans. One of the product is maltose
4) Each mole of ATP store energy
a) 7.3 kcal/mole b) 7.3kj/molec) 17.3kcal/mole
d) 17.3kj/mole
Ans.7.3 kcal/mole
5) Respiration is necessary because it helps in
I ) Synthesis of molecules II) Cell division III) Active transport
a ) only I b) only II c) both I and II d) I , II and III
Ans. I , II and III
6) Light dependent reaction takes place in
a) Stroma b) Thylakoid c) Cristae d) Cisternae
Ans.Thylakoid
7) NADH and FADH are oxidized to form
a ) ATP + H2O b) ADP + H2O
c )ATP + CO2 d) ADP + CO2
Ans. ATP + H2O
8) Splitting of water in presence of light called
a) Hydrolysis b) Glycolysis
c) Photolysis d) None of these
Ans.Photolysis
9) Splitting of glucose (glycolysis) release small amount of energy which is enough to generate
a) 2ATP b) 5 ATP c) 18 ATP d) 36ATP
Ans. 2 ATP
10) The capacity to do work is known as
a ) energy b) kinetic energy
c) effort d) pressure
Ans. Energy
11) It is the only source of energy on earth
a ) Water b) Air c) Volcano d) Sun
Ans. Sun
12) The light energy of the sun is changed into ___ and ___ energy.
a ) heat , wind
b) heat , chemical
c) heat , mechanical
d) chemical, mechanical
Ans. Heat , chemical
13) The first law of thermodynamics states that
a ) energy can be created b) energy can be destroyed
c) energy can neither be created nor destroyed
d) all of the above
Ans. energy can neither be created nor destroyed
14) The study of conversion of free energy into different forms by living organisms is called
a) energetics b) bioenergetics c) bioconversion
d) bio transmission
Ans. Bioenergetics
15) The oxidation reactions are those reactions in which loss of ____ and ____ occurs
a ) electron, proton b) electron , neutron
c) proton , neutron d) all of the above
Ans. Electron , proton
16) The full form of ATP is
a ) Aden Tri-Phospate b) Adenine Tri-Phosphor
c) Adenine Tri-Phosphorous d) Adenine Tri-Phosphate
Ans. Adenine Tri-Phosphate
17) The breakdown of ATP results into the formation of
a ) ADP + P b) ADP + P + energy
c) ADP + energy d) Energy + P
Ans. ADP + P + energy
18) It’s the green pigment found in the chloroplast
a ) leucoplasts b) chlorophyll c) chromoplast d) chomoplast
Ans. Chlorophyll
20) Identity the correct statement regarding carbon dioxide
a ) it can absorb heat
b) if it’s quantity increases it can lead to global warming
c) it’s produced during photosynthesis
d) only a and b
Ans. Only a and b
21) Which one of them is not a requirement for C3 cycles
a ) Oxygen b) Carbon dioxide c) Penrose Sugar
d) Enzymes to catalyze all the reactions.
Ans. Oxygen
22) What are the factors which affect the rate of photosynthesis
a ) Light intensity b) Carbon dioxide concentration
c) temperature d) all of them
Ans. All of them
23) The breakdown of food molecules to release energy is called
a ) breathing b) respiration c) photosynthesis d) cellular respiration
Ans. Respiration
24) The respiration which takes place in the absence of ____ is known as anaerobic respiration
a ) glucose b) carbon dioxide c) oxygen d) nitrogen
Ans. Oxygen
25) Except one all other are anaerobic respiration examples
a ) Glucose ->Ethanol + CO2+ Some energy
b) C6H12O6 ->2C2H5OH + 2CO2 + Some ATP
c) Glucose -> Lactic acid + Some energy
d) C6H12O6 + 6O2 -> 6CO2 + 6H2O + 36 ATP
Ans. C6H12O6 + 6O2 -> 6CO2 + 6H2O + 36 ATP
26) In aerobic respiration the first stage of glucose breakdown is called as
a ) Electron Transport Chain b) Kreb’s or Citric acid Cycle
c) Glycolysis d) both a and b
Ans. Glycolysis
27) Reaction in which solar energy is transferred to glucose from ATP and NADPH2 ,takes place in stroma called
- i) Light reaction (II) Dark reaction (III) Light dependent reaction
a ) I only b) II only c) I and II d) II and III
Ans. II only
28) Fundamental molecule produced during photosynthesis is
a )Glucose b) Amino acid c) Fatty acid d) Nucleotide
Ans. Glucose
29) Loss of electron and proton is called
(I) Oxidation reaction (II) Reduction reaction (III) Redox reaction
a ) I only b) I and II c) II and IIII. D) I, II and III
Ans. I only
30) Stage of aerobic respiration takes place at the cristae of Mitochondria called.
a )Electron transport chain b) Glycolysis
b )Kreb’s cycle d) C3 cycle
Ans. Kreb’s cycle