Top 250+ Solved Respiration MCQ Questions Answer
Q. End product of citric add/Krebs cycle is (CBSE. 1993; Har. P.M.T. 1994)
a. Citric acid
b. Lactic acid
c. Pyruvic acid
d. CO2 + H2O
Q. Krebs cycle is (AMU. 1993)
a. Oxidation of glucose to alcohol and water
b. Oxidation of acetyl CoA to carbon dioxide and water involving electron transport
c. Complete oxidation of acetyl CoA without electron transport
d. Complete reduction of acetyl CoA to carbon dioxide and water.
Q. Most of the biological energy is supplied by mitochondria through (M.P.PMT.1994, AMU. 1998)
a. Breaking of protein
b. Reduction NADP+
c. Breaking of sugars
d. Oxidising TCA substrates.
Q. Which one is a product of glycolysis, besides 2 ATP ? (CPMT. 1995; M.P.PMT. 1998)
a. FAD
b. NADH
c. NAD
d. NADP
Q. The site of Krebs cycle in bacteria is (Bihar P.M.T. 1995)
a. Nucleoid
b. Cytoplasm
c. Plasma membrane
d. Ribosomes
Q. Which is the product of aerobic respiration? (A.F.M.C 1995)
a. Malic acid
b. Ethyl alcohol
c. Lactic acid
d. Pyruvic acid
Q. Which one can respire in the absence of oxygen ? (R.P.M.T. 1996)
a. Seed
b. Leaves
c. Stem
d. Root
Q. Lactic acid fermentation does not produce (A.UMS. 1996; Pb. P.M.T. 1997; AMU. 1999)
a. ATP
b. CO2 and NADH
c. CO2
d. NADH
Q. Electron transport system of mitochondria is located in (M.P.PMT. 1997, CPMT. 1999, R.PMT.2000)
a. Outer membrane
b. Inner membrane
c. Inter-cristal space
d. Outer chamber.
Q. In bacteria the site for respiration is (CB.S.E. 1997)
a. Cytoplasm
b. Mesosome
c. Episome
d. Plasmid
Q. Which is wrong about cytochrome P-450 ? (C.B.S.E. 1998)
a. Contains iron
b. Is a coloured cell
c. Is an enzyme
d. Plays an important role in metabolism.
Q. Production of alcohol by Yeast fermentation is ....... process (Pb. P.M.T. 1998)
a. Anaerobic
b. Aerobic
c. Light dependent
d. Both A and C.
Q. In glycolysis, enzyme enolasc produces (AM.U. 1999)
a. Phosphoglyceric acid
b. Phosphoenol pyruvate
c. Phosphoglyceraldehyde
d. Pyruvate
Q. Oxygen is reduced to water in (Kerala 2000,2006)
a. Fermentation
b. Calvin cycle
c. Electron transport
d. Krebs cycle
Q. Cytochrome is (C.B.S.E. 2001)
a. Metalloflavoprotein
b. Fe-containing porphyrin pigment
c. Lipid
d. Glycoprotein