Top 250+ Solved Respiration MCQ Questions Answer
Q. During glycolysis water is released from
a. 2, Phospoglyceric acid
b. Biphosphoglyceric acid
c. Phosphoenol pyruvic acid
d. Phosphoglyceraldehyde
Q. When human muscle contracts :
a. Respiration does not occur
b. Anaerobic respiration occurs, if supply of oxygen is insufficient
c. Anaerobic respiration never occurs
d. Always anaerobic respiration occurs.
Q. The correct sequence of the three processes of aerobic respiration is
a. Glycolysis, Kreb’s cycle, oxidative phosphorylation.
b. Glycolysis, oxidative phosphorylation and Kreb’s cycle
c. Kreb’s cycle, glycolysis and oxidative phosphorylation
d. oxidative phosphorylation, Kreb’s cycle, glycolysis
Q. The number of ATP molecules formed in oxidative phosphorylation of one glucose molecule
a. 6
b. 14
c. 28
d. 34
Q. The number of ATP molecules formed in oxidative phosphorylation of 1 pyruvic acid
a. 6
b. 14
c. 28
d. 34
Q. How much energy spent in transport of one pyruvic acid to mitochondrion ?
a. Energy of 1 ATP
b. No energy
c. Energy of 2 ATP
d. Not certain
Q. In anaerobic respiration in plants (CM.C 1983, CPM.T. 1992)
a. Oxygen is absorbed
b. Oxygen is released
c. Carbon dioxide is released
d. Carbon dioxide is absorbe
Q. Krebs cycle takes place in (CPMT. 1985, 1999, M.P.P.M.T. 1997, AMU. 2000, AFMC 2002, RPMT. 2005)
a. Vesicles of E.R
b. Mitochondria
c. Dictyosomes
d. Chloroplasts.
Q. By ETS, ATP-synthesis occurs on the (A.I.I.M.S. 1984)
a. Outer membrane of mitochondrion
b. Inner membrane of mitochondrion
c. Matrix
d. None of the above
Q. Energy currency (reservoir) of the cells is (BHU 1984, Kerala 2001, AMU 2003, MPPMT 2002)
a. AMP
b. ATP
c. RNA
d. DNA
Q. Complete oxidation of glucose into pyruvic acid with several intermediate steps is known as (C.B.S.E. 1988;B.H.U. 1986,1989)
a. TCA-pathway
b. Glycolysis
c. HMS-pathway
d. Krebs cycle
Q. When a molecule of pyruvic acid is subjected to anaerobic oxidation and forms lactic acid, there is(RPMT. 1985 BHU. 1985)
a. Loss of 3 ATP molecule
b. Loss of 6 ATP molecules
c. Gain of 2 ATP molecules
d. Gain of 4 ATP molecules
Q. Conversion of pyruvic acid into ethyl alcohol is facilitated by the enzyme (AMU. 1986)
a. Decarboxylase
b. Dehydrogenase
c. Decarboxylase and dehydrogenase
d. Phosphotase
Q. RQ for fatty substance/fat is (DPMT 1985; Karnataka 1999)
a. Infinity
b. Less than one
c. Greater than one
d. Zero