Students can refer to the following Respiration in Plants MCQ Questions Class 11 with Answers provided below based on the latest curriculum and examination pattern issued by CBSE and NCERT. Our teachers have provided here collection of multiple choice questions for Chapter 1 Respiration in Plants Class 11 Biology covering all topics in your textbook so that students can assess themselves on all important topics and thoroughly prepare for their exams
Respiration in Plants MCQ Questions Class 11 Biology with Answers
We have provided below Respiration in Plants MCQ Questions Class 11 with answers which will help the students to go through the entire syllabus and practice multiple choice questions provided here with solutions. As MCQ Questions for Class 11 Biology pdf download can be really scoring for students, you should go through all problems provided below so that you are able to get more marks in your exams.
Respiration in Plants MCQ Questions Class 11
Question. Conversion of glucose to glucose-6-phosphate, the first irreversible reaction of glycolysis, is catalysed by
Question. An enzymes of TCA cycle are located in themitochondrial matrix except one which is located in inner mitochondrial membrane in eukaryotes and in cytosol in prokaryotes. This enzyme is
(a) Succinate dehydrogenase
(b) Lactate dehydrogenase
(c) Isocitrate dehydrogenase
(d) Malate dehydrogenase
Question. Which of the metabolites is common to respiration mediated breakdown of fats, carbohydrates and proteins?
(a) Fructose 1, 6 – bisphosphate
(b) Pyruvic acid
(c) Acetyl CoA
(d) Glucose – 6 – phosphate
Question. What is the role of NAD+ in cellular respiration?
(a) It functions as an enzyme.
(b) It functions as an electron carrier.
(c) It is a nucleotide source for ATP synthesis.
(d) It is the final electron acceptor for anaerobic respiration.
Question. In glycolysis, during oxidation electrons are removed by
(d) molecular oxygen.
Question. At the end of glycolysis, six carbon compound
ultimately changes into
(a) ethyl alcohol
(b) acetyl Co-A
(c) pyruvic acid
Question. The first phase in the breakdown of glucose, in animal cell, is
(b) Krebs’ cycle
Question. End product of glycolysis is
(a) acetyl CoA
(b) pyruvic acid
(c) glucose 1-phosphate
(d) fructose 1-phosphate.
Question. In which one of the following processes CO2 is not released?
(a) Aerobic respiration in plants
(b) Aerobic respiration in animals
(c) Alcoholic fermentation
(d) Lactate fermentation
Question. Which of the following is the connecting link between glycolysis and Krebs cycle?
(a) Acetyl CoA
(b) Oxalosuccinic acid
(c) Pyruvic acid
(d) Citric acid
Question. Pyruvate kinase enzyme catalyses
(a) first irreversible step of glycolysis
(b) second irreversible step of glycolysis
(c) third irreversible step of glycolysis
(d) fourth irreversible step of glycolysis
Question. The energy-releasing metabolic process in which substrate is oxidised without an external electron acceptor is called
(c) aerobic respiration
Question. In alcohol fermentation
(a) triose phosphate is the electron donor while acetaldehyde is the electron acceptor
(b) triose phosphate is the electron donor while pyruvic acid is the electron acceptor
(c) there is no electron donor
(d) oxygen is the electron acceptor.
Question. The end product of fermentation are
(a) O2 and C2H5OH
(b) CO2 and acetaldehyde
(c) CO2 and O2
(d) CO2 and C2H5OH.
Question. Which of the following products are obtained by anaerobic respiration from yeast?
(a) Beer and wine
(d) All of these
Question. When yeast ferments glucose, the products obtained are
(a) ethanol and CO2
(b) methanol and CO2
(c) ethanol and water
(d) water and CO2.
Question. The number of substrate level phosphorylations in one turn of citric acid cycle is
Question. Where is respiratory electron transport system (ETS) located in plants ?
(a) Mitochondrial matrix
(b) Outer mitochondrial membrane
(c) Inner mitochondrial membrane
(d) Intermembrane space
Question. Which of these statements is incorrect?
(a) Enzymes of TCA cycle are present in mitochondrial matrix.
(b) Glycolysis occurs in cytosol.
(c) Glycolysis operates as long as it is supplied with NAD that can pick up hydrogen atoms.
(d) Oxidative phosphorylation takes place in outer mitochondrial membrane.
Question. Which statement is wrong for Krebs’ cycle?
(a) There is one point in the cycle where FAD+ is reduced to FADH2.
(b) During conversion of succinyl CoA to succinic acid, a molecule of GTP is synthesised.
(c) The cycle starts with condensation of acetyl group (acetyl CoA) with pyruvic acid to yield citric acid.
(d) There are three points in the cycle where NAD+is reduced to NADH + H+.
Question. Oxidative phosphorylation is
(a) formation of ATP by transfer of phosphate
group from a substrate to ADP
(b) oxidation of phosphate group in ATP
(c) addition of phosphate group to ATP
(d) formation of ATP by energy released from electrons removed during substrate oxidation.
Question. Cytochromes are found in
(a) cristae of mitochondria
(c) matrix of mitochondria
(d) outer wall of mitochondria.
Question. In mitochondria, protons accumulate in the
(a) outer membrane
(b) inner membrane
(c) intermembrane space
Question. All enzymes of TCA cycle are located in the mitochondrial matrix except one which is located in inner mitochondrial membranes in eukaryotes and in cytosol in prokaryotes. This enzyme is
(a) isocitrate dehydrogenase
(b) malate dehydrogenase
(c) succinate dehydrogenase
(d) lactate dehydrogenase.
Question. In which one of the following do the two names refer to one and the same thing ?
(a) Krebs’ cycle and Calvin cycle
(b) Tricarboxylic acid cycle and citric acid cycle
(c) Citric acid cycle and Calvin cycle
(d) Tricarboxylic acid cycle and urea cycle
Question. Cytochrome is
(a) metallo flavo protein
(b) Fe containing porphyrin pigment
Question. Which one of the following statements about cytochrome P450 is wrong?
(a) It is a coloured cell.
(b) It is an enzyme involved in oxidation reactions.
(c) It has an important role in metabolism.
(d) It contains iron.
Question. Which of the following is the key intermediate compound linking glycolysis to the Krebs’ cycle?
(a) Malic acid
(b) Acetyl CoA
Question. By which of the following complex, proton is pumped to reach ATP synthase to participate in ATP synthesis?
(a) Cytochrome b6f
(b) Cytochrome c oxidase
(c) Cytochrome a – a3
(d) Cytochrome bc
Question. In alcoholic fermentation, NAD+ is produced during the
(a) reduction of acetyldehyde to ethanol.
(b) oxidation of glucose.
(c) oxidation of pyruvate to acetyl coA.
(d) hydrolysis of ATP to ADP
Question. In Krebs’ cycle, the FAD precipitates as electron acceptor during the conversion of
(a) fumaric acid to malic acid
(b) succinic acid to fumaric acid
(c) succinyl CoA to succinic acid
(d) α-ketoglutarate to succinyl CoA.
Question. The correct sequence of electron acceptor in ATP synthesis is
(a) Cyt. b, c, a3, a
(b) Cyt. c, b, a, a3
(c) Cyt. a, a, b, c
(d) Cyt. b, c, a, a3.
Question. The 1992 Nobel Prize for medicine was awarded to Edmond H. Fischer and Edwin J. Krebs for their work concerning
(a) reversible protein phosphorylation as a biological regulation mechanism
(b) isolation of the gene for a human disease
(c) human genome project
(d) drug designing involving inhibition of DNA synthesis of the pathogen.
Question. End product of citric acid cycle/Krebs’ cycle is
(a) citric acid
(b) lactic acid
(c) pyruvic acid
(d) CO2 + H2O.
Question. Oxidative phosphorylation is production of
(a) ATP in photosynthesis
(b) NADPH in photosynthesis
(c) ATP in respiration
(d) NADH in respiration.
Question. End products of aerobic respiration are
(a) sugar and oxygen
(b) water and energy
(c) carbon dioxide, water and energy
(d) carbon dioxide and energy.
Question. Terminal cytochrome of respiratory chain which donates electrons to oxygen is
(a) Cyt b
(b) Cyt c
(c) Cyt a1
(d) Cyt a3.
Question. Glycolysis occurs in
Question. Anaerobic respiration, after glycolysis is also
Question. In glycolysis, glucose molecule is converted into
(c) acetyl CoA
(d) pyruvic acid
Question. Connecting link between glycolysis and Krebs’ cycle before pyruvate entering Krebs’ cycle is changed to
(d) acetyl CoA.
Our teachers have developed really good Multiple Choice Questions covering all important topics in each chapter which are expected to come in upcoming tests and exams, as MCQs are coming in all exams now therefore practice them carefully to get full understanding of topics and get good marks. Download the latest questions with multiple choice answers for Class 11 Respiration in Plants in pdf or read online for free.
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