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This set of Biology Multiple Choice Questions & Answers (MCQs) focuses on Respiration Set 3
Q1 | Fructose 1,6 biphosphate splits into
- PGAL and DHAP
- PGAL and PGA
- PGAL and BPGA
- PGA and BPGA.
Q2 | Oxidative phosphorylation occurs in
- Cytosol
- Cristae
- Mitochondrial matrix
- Endoplasmic reticulum,
Q3 | Malic acid is formed from fumaric acid
- By addition of CO2
- By addition of H2O
- By removal of H2O
- By removal of CO2
Q4 | If CO2 and 2H are removed from pyruvic acid, it is formed
- Acetyl co-enzyme A
- Citric acid
- Acetate
- Co-A
Q5 | It is by-product of Kreb’s cycle
- Oxaloacetic acid
- Citric acid
- Acetyl co-enzyme
- Acetate.
Q6 | One ATP is formed when
- Succinic acid ? Fumaric acid
- ?-ketoglutaric acid ? Succinyl CoA
- Succinyl CoA ?Succinic acid
- Fumaric acid ? Malic acid.
Q7 | Respiratory quotient and compensation point are
- Not related
- Inverse to each other
- Same
- Applicable to.all organisms.
Q8 | RQ = l, is
- The multiplication O2 consumed O2 and released CQ2
- The amount of O2, consumed and CO2 released are the same
- One CO2 molecule more released than O2 molecule consumed
- One O2 molecule more consumed than CO2 molecules released
Q9 | If RQ is 0.7, the substance needs
- More O2 for respiration
- Less O2 for respiration
- O2 is not used for its respiration
- The substance has more oxygen in its constitution
Q10 | The site of occurrance of all reactions of PPP is
- Cytosol
- Mitochondrial matrix
- Cristae
- Thylakoid matrix
Q11 | The process occurring during Kreb’s cycle is
- Decarboxylation and dehydrogenation
- Decarboxylation, dehydrogenation and phosphorylation
- Decarboxylation and phosphorylation
- Dehydrogenation and phosphorylation
Q12 | During glycolysis water is released from
- 2, Phospoglyceric acid
- Biphosphoglyceric acid
- Phosphoenol pyruvic acid
- Phosphoglyceraldehyde
Q13 | When human muscle contracts :
- Respiration does not occur
- Anaerobic respiration occurs, if supply of oxygen is insufficient
- Anaerobic respiration never occurs
- Always anaerobic respiration occurs.
Q14 | The correct sequence of the three processes of aerobic respiration is
- Glycolysis, Kreb’s cycle, oxidative phosphorylation.
- Glycolysis, oxidative phosphorylation and Kreb’s cycle
- Kreb’s cycle, glycolysis and oxidative phosphorylation
- oxidative phosphorylation, Kreb’s cycle, glycolysis
Q15 | During PPP, RuBP is formed in
- Mitochondria
- Cytosol
- Stroma
- Chloroplas
Q16 | The number of ATP molecules formed in oxidative phosphorylation of one glucose molecule
- 6
- 14
- 28
- 34
Q17 | The number of ATP molecules formed in oxidative phosphorylation of 1 pyruvic acid
- 6
- 14
- 28
- 34
Q18 | How much energy spent in transport of one pyruvic acid to mitochondrion ?
- Energy of 1 ATP
- No energy
- Energy of 2 ATP
- Not certain
Q19 | In anaerobic respiration in plants (CM.C 1983, CPM.T. 1992)
- Oxygen is absorbed
- Oxygen is released
- Carbon dioxide is released
- Carbon dioxide is absorbed.
Q20 | Krebs cycle takes place in (CPMT. 1985, 1999, M.P.P.M.T. 1997, AMU. 2000, AFMC 2002, RPMT. 2005)
- Vesicles of E.R
- Mitochondria
- Dictyosomes
- Chloroplasts.
Q21 | By ETS, ATP-synthesis occurs on the (A.I.I.M.S. 1984)
- Outer membrane of mitochondrion
- Inner membrane of mitochondrion
- Matrix
- None of the above
Q22 | Energy currency (reservoir) of the cells is (BHU 1984, Kerala 2001, AMU 2003, MPPMT 2002)
- AMP
- ATP
- RNA
- DNA
Q23 | Complete oxidation of glucose into pyruvic acid with several intermediate steps is known as (C.B.S.E. 1988;B.H.U. 1986,1989)
- TCA-pathway
- Glycolysis
- HMS-pathway
- Krebs cycle
Q24 | When a molecule of pyruvic acid is subjected to anaerobic oxidation and forms lactic acid, there is(RPMT. 1985 BHU. 1985)
- Loss of 3 ATP molecule
- Loss of 6 ATP molecules
- Gain of 2 ATP molecules
- Gain of 4 ATP molecules
Q25 | Conversion of pyruvic acid into ethyl alcohol is facilitated by the enzyme (AMU. 1986)
- Decarboxylase
- Dehydrogenase
- Decarboxylase and dehydrogenase
- Phosphotase