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Free download in PDF Respiration in Plants Multiple Choice Questions (MCQs) and Answers for competitive exams. These short objective type questions with answers are very important for Board exams as well as competitive exams like NEET, AIIMS, JIPMER etc. These short solved questions or quizzes are provided by Gkseries./p>
(1)
Which of the following plant part can respire anaerobically:
[A]
Root
[B]
Seed
[C]
Stem
[D]
leaves
(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
(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
(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
(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
(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
(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
(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
(19)
Intermediate stage between aerobic and anaerobic cycles is:
[A]
Gloxylate cycle
[B]
Glycolysis
[C]
Krebs cycle
[D]
None of these
(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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