Respiration in Plants MCQs | Respiration in Plants Multiple Choice Questions (MCQs) and Answers

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Questions
1 Which of the following plant part can respire anaerobically:
A Root
B Seed
C Stem
D leaves

Answer:Seed
2 How many ATP molecules could maximally generated from one molecule of glucose,if the complete oxidatin of one mole of glucose to CO2 and H2O yields 686 kcal and the useful chemical energy available in the high energy phosphate bond of one mole of ATP is 12 kcal ?
A One
B Two
C Thirty
D Fifty seven

Answer:Thirty
3 All enzymes of TCA cycle are located in the mitochondrial matrix except one which is located in the inner mitochondrial membrane in the eukaryotes and in the cytosol in prokaryotes. This enzyme is :
A isocitrate dehydrogenase
B Malate dehydrogenase
C Sucinnic dehydrogenase
D Lactate dehydrogenase

Answer: Sucinnic dehydrogenase
4 The overall aim of glycolysis, Kreb’s cycle and ETS is:
A production of ATP on large scale
B Nucleic acid
C Sugars
D ATP production in small stepwise units

Answer: ATP production in small stepwise units
5 The net gain of ATP during glycolysis is:
A Six
B Two
C Eight
D Four

Answer:Two
6 Which one is not correct about Kreb’s cycle?
A It is also called citric acid cycle
B The intermediate compound which link kreb’s cycle and glycolysis is Malic acid
C It occurs in mitochondria
D It starts with six carbon compound

Answer:The intermediate compound which link kreb’s cycle and glycolysis is Malic acid
7 In which of the following steps of Kreb’s cycle CO2 is evovled?
A Isociric acid / Oxalosuccinic acid
B Oxalo succinic acid / α-Ketogluteric acid
C succinic acid / Fumaric acid
D Malic acid / Oxaloacetic acid

Answer:Oxalo succinic acid / α-Ketogluteric acid
8 Which of the following enzyme is not used in Kreb’s cycle?
A Aconitase
B Decarboxylase
C Aldolase
D Fumarase

Answer:Aldolase
9 The end products of fermentation are:
A ATP
B Ethanol+ CO2 + ATP
C Ethyl alcohol + H2O+ CO2 + ATP
D Pyruvic acid + CO2

Answer: Ethanol+ CO2 + ATP
10 Anaerobic respiration in muscles give rise to the following:
A C3H6O3
B CH3COOH
C C2H5OH
D CH3COCOOH

Answer: CH3COCOOH
11 RQ (Respiratory quotient ) is defined as :
A Volume of CO2 evolved = Volume of O2 consumed
B Volume of CO2 consumed / Volume of O2 evolved
C Volume of CO2 evolved / Volume of O2 consumed
D Volume of O2 evolved / Volume of CO2 consumed

Answer:Volume of CO2 evolved / Volume of O2 consumed
12 In which of the following CO2 is not evolved:
A Aerobic resoiration in plants
B Aerobic respiration in animals
C Alcoholic fermentation
D Lactate fermentation

Answer: Lactate fermentation
13 The three boxes in this diagram represents the three major biosynthetic Pathway s in aerobic Respiration:
A ATP
B H2O
C FADH2 OR FAD+
D NADH

Answer: ATP
14 Mitochondria are semi-autonomous because as they posses:
A DNA
B DNA + RNA
C DNA + RNA ribosome
D Protein

Answer: DNA + RNA ribosome
15 FAD is the electron acceptor in between :
A Fumaric acid and Malic acid
B Fumaric acid and Succinic acid
C Malic acid and oxaloacetic acid
D Citric acid and isocitric acid

Answer: Fumaric acid and Succinic acid
16 The energy releasing metabolic reaction in which substrate is oxidised without an external electron Acceptor is called:
A Photorespiration
B Aerobic respiration
C Glycolysis
D Fermentation

Answer:Fermentation
17 Most enzymes that take part in KREBS CYCLE are located in:
A Mitochondrial matrix
B Cytoplasm
C Inner mitochondrial membrane
D Plasma membrane

Answer: Mitochondrial matrix
18 Phos[phorylation of glucose during glycolysis is catalysed by :
A Phosphoglucomutase
B Phosphoglucoisomerase
C Hexokinase
D Phosphorylase

Answer:Hexokinase
19 Intermediate stage between aerobic and anaerobic cycles is:
A Gloxylate cycle
B Glycolysis
C Krebs cycle
D None of these

Answer: Glycolysis
20 The size of mitochondria inplant cell is:
A 0.1 – 1.0 µm long
B 1.0 – 4.0 µm long
C 2.0 – 4.0 µm long
D 0 – 4.0 µm long

Answer: 1.0 – 4.0 µm long

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