CBSE Questions for Class 11 Medical Biology Respiration In Plants Quiz 6 - MCQExams.com

Who reported that glucose is involved in the production of energy in aerobic respiration?
  • Hans Krebs
  • M. Calvin
  • L. Pasteur
  • R. Koch
The process used in conversion of pyruvate to acetyl CoA is 
  • Oxidative dehydration
  • Oxidative decarboxylation
  • Oxidative phosporylation
  • Oxidative dephosphorylation
  • None of the above
Which of the following reactions is endergonic?
  • $${ATP\rightarrow ADP +P_i}$$
  • $${NADH\rightarrow NAD^+ +H^+}$$
  • $${(CH_2O)_n+O_2\rightarrow CO_2+H_2O}$$
  • None of the above
The product of fermentation is
  • Ethanol and lactic acid
  • Acetic acid and lactic acid
  • Ethanol and acetic acid
  • All of the above
On complete oxidation in which one of the following substrates RQ will be more than one?
  • Carbohydrate
  • Fat
  • Organic acid
  • Protein
In glycolysis, during oxidation electrons are removed by 
  • ATP.
  • Glyceraldehyde-3-phosphate.
  • $${NAD^+}$$.
  • Molecular oxygen.
Glycolysis is which of the following kind of a process?
  • Amphiteric
  • Reductive
  • Oxidative
  • Oxidoreductive
The respiratory quotient during cellular respiration would depend on 
  • The nature of enzyme involved.
  • The nature of the substrate.
  • The amount of carbon dioxide released.
  • The amount of oxygen utilized.
The respiratory quotient (RQ) of carbohydrate is 
  • Equal to 1
  • Less than 1
  • More than 1
  • None of the above
Which of the following is not formed during glycolysis?
  • Pyruvate
  • NADH
  • ATP
  • FADH
Which is the wrong statement from the following?
  • When tripalmitin is used as a substrate in respiration, the R.Q. is 0.7.
  • The intermediate compound which links glycolysis with Kreb's cycle is malic acid.
  • One glucose molecule yields a net gain of 36 ATP molecules during aerobic respiration.
  • One glucose molecule yields a net gain of 2 ATP molecules during fermentation.
  • The scheme of glycolysis was given by Embden, Meyerhof and Parnas.
The energy releasing metabolic process in which substrate is oxidized without an external electron acceptor is called as
  • Photorespiration
  • Glycolysis
  • Fermentation
  • Aerobic respiration
In which anaerobic reaction pyruvic acid is produced?
  • Glycolysis
  • Kreb's cycle
  • Hill's reaction
  • None of the above
If fermentation is allowed to proceed in a closed vessel
  • Vaccum will result
  • No changes will occur
  • Gas pressure will develop because of excessive $${O_2}$$
  • Gas pressure will develop because of excessive $${CO_2}$$
R.Q. for a sprouting potato tubers will be 
  • > 1
  • 0
  • 1
  • < 1
Single turn of citric acid cycle yields
  • 2 $${FADH_2}$$, 2$${NADH_2}$$, 2GTP
  • 1 $${FADH_2}$$, 2$${NADH_2}$$, 1GTP
  • 1 $${FADH_2}$$, 3$${NADH_2}$$, 1GTP
  • 1 $${FADH_2}$$, 4$${NADH_2}$$, 1GTP
  • 1 $${FADH_2}$$, 1$${NADH_2}$$, 2GTP
When the evolution of $$CO_2$$ is more than the intake of $$O_2$$, the respired substrate should be
  • Fatty acid.
  • Organic acid.
  • Glucose.
  • Polysaccharide.
In succulent plants R.Q. is less than one because of
  • Complete oxidation
  • Complete reduction
  • Incomplete reduction
  • Incomplete oxidation
Mitochondria supplies most of the necessary biological energy through 
  • The breakdown of sugars
  • NADP reduction
  • Oxidation of TCA cycle products
  • The breakdown of proteins
The link between glycolysis and Kerbs cycle is
  • Critic acid
  • Malic acid
  • Fumaric acid
  • Acetyl CoA
Succinyl Co-A is related to
  • Krebs cycle
  • Calvin cycle
  • Glycolate cycle
  • HMO-cycle
Where does TCA cycle take place?
  • Cytoplasm
  • Inner membrane of mitochondria
  • Outer membrane of mitochondria
  • Mitochondrial matrix
During one Krebs cycle, the number of $${CO_2}$$ molecules released is 
  • 1
  • 2
  • 3
  • 4
R.Q. is less than one at the time of respiration of
  • Starch
  • Sugarcane
  • Glucose
  • Groundnut
The anaerobic respiration of $${C_6H_{12}O_6}$$ differ from alcoholic fermentation of $${C_6H_{12} O_6}$$ in 
  • Quality and nature of substrates.
  • Nature of end products.
  • Oxygen requirement.
  • Both A and B.
FAD is electron acceptor during oxidation of which of the following?
  • $${\alpha}$$ -ketoglutarate $$\rightarrow$$ Succinyl CoA
  • Succinic acid $$\rightarrow$$ Fumaric acid
  • Succinyl CoA $$\rightarrow$$ Succinc acid
  • Fumaric acid $$\rightarrow$$ Malic acid
Succinate + FAD gives rise to 
  • Fumarate + $${FADH_2}$$
  • Malate + $${NADH_2}$$
  • Isocitrate + $${NADH_2}$$
  • Citrate + $${H_2O}$$
The incomplete breakdown of sugars in anaerobic respiration forms
  • Fructose and water..
  • Glucose and $$CO_2$$.
  • Alcohol and $$CO_2$$.
  • Water and $$CO_2$$.
Which of the following is coenzyme?
  • NAD
  • FAD
  • Both (A) and (B)
  • None of the above
End product of glycolysis is
  • Citric acid
  • Glyceraldehyde
  • Phosphoglyceraldehyde
  • Pyruvic acid
During the production of bread, it becomes porous due to the release of $$CO_2$$ formed by the action of
  • Yeast.
  • Bacteria.
  • Virus.
  • Protozoa.
Oxidation of one molecule of glucose in aerobic respiration results in the production of
  • 36 ATP molecules.
  • 38 ATP molecules.
  • 3 ATP molecules.
  • Both A or B.
Energy obtained by a cell from a catabolic reaction is stored immediately in the form of
  • Glucose.
  • Pyruvic acid.
  • ADP.
  • ATP.
In respiration, pyruvic acid is
  • Formed only when oxygen is available.
  • One of the product of Krebs cycle.
  • Broken down into Acetyl Co-A and $$CO_2$$.
  • A result of protein break down.
Conversion of pyruvic acid into ethyl alcohol is mediated by 
  • Phosphatase.
  • Dehydrogenase.
  • Decarboxylase and dehydrogenase.
  • Catalase.
The first compound of the TCA cycle is
  • Oxalo-succinic acid.
  • Oxaloacetic acid.
  • Citric acid.
  • Cis-aconitic acid.
The cell organelle in which aerobic respiration occurs is known as 
  • Ribosomes.
  • Mitochondria.
  • Lysosomes.
  • Chloroplasts.
The net gain of ATP molecules from the process of glycolysis is
  • Zero.
  • Two.
  • Four.
  • Eight.
The number of ATP molecules formed during aerobic respiration in the break down of one glucose molecule via the malate-aspartate shuttle is
  • 38.
  • 18.
  • 28.
  • 4.
In Opuntia ,the R.Q. will be
  • Equal to 1.
  • Less than 1.
  • More than 1.
  • Equal to 0.
Most of the energy from the carbohydrates is released by oxidation when
  • Pyruvic acid is converted into $$CO_2$$ and $$H_2O$$.
  • Pyruvic acid is converted into acetyl Co-A.
  • Sugar is converted into pyruvic acid.
  • Glucose is converted into alcohol and $$CO_2$$.
Glycolysis takes place in the
  • Cytoplasm
  • Chloroplast
  • Ribosome
  • Mitochondria
Fermentation is conducted by
  • All bacteria.
  • All fungi.
  • Some fungi and some bacteria.
  • All microorganisms.
The enzyme involved in alcoholic fermentation is
  • Pyruvate decarboxylase.
  • Alcohol dehydrogenase.
  • Lactate dehydrogenase.
  • Both A and B.
The universal hydrogen acceptor is
  • NAD.
  • ATP.
  • Co-A.
  • FMN.
Pyruvic acid is formed during
  • Krebs cycle.
  • Glycolysis.
  • Ornithine cycle.
  • Calvin cycle.
Respiratory quotient (R. Q.) is defined as the
  • Vol. of $$O_{2}$$ / vol. of $$CO_{2}$$
  • Vol. of $$CO_{2}$$ / vol. of $$O_{2}$$
  • Vol. of $$O_{2}$$ / vol. of $$N_{2}$$
  • Vol. of $$N_{2}$$ / vol. of $$CO_{2}$$
Citric acid is produced in
  • Bacterical episome
  • Krebs cycle
  • Calvin cycle
  • Calvin and HSK cycle
R.Q. of a germinating ground nut and castor seed is
  • 1.
  • < 1.
  • > 1.
  • 0.
The R.Q. value of a ripening fatty seed is
  • < 1.
  • > 1.
  • Zero.
  • Infinity.
0:0:1


Answered Not Answered Not Visited Correct : 0 Incorrect : 0

Practice Class 11 Medical Biology Quiz Questions and Answers