Q.1
For formation of ethanol, pyruvic acid is first changed to acetaldehyde by enzyme … ..[ JKCMEE 2007]
  • a) Pyruvate dehydrogenase
  • b) Pyruvate carboxylase
  • c) Alcohol oxidase
  • d) Alcohol dehydrogenase
Q.2
Before combining with OAA, pyruvic acid is changed into … .. [ BHU 2002]
  • a) Succinic acid
  • b) Malic acid
  • c) Acetyl CoA
  • d) Citric acid
Q.3
Alcohol fermentation uses .. … [ MHTCET 2001]
  • a) Ribosomes
  • b) Golgi bodies
  • c) Mitochondrial enzymes
  • d) Cytoplasmic enzymes
Q.4
A molecule of FADH2 …
  • a) Consumes one O2
  • b) Consumes one H2O molecules
  • c) Forms 2ATP
  • d) All the above
Q.5
Energy for ATP synthesis is obtained from … ..[ CPMT 2000]
  • a) Oxygen ion gradient
  • b) Hydrogen ion gradient
  • c) Nitrogen ion gradient
  • d) All the above
Q.6
Electron transport system of mitochondria is located in … .. [ CPMT 1999]
  • a) Outer chamber
  • b) Inner membrane
  • c) Inter-cristal space
  • d) Outer chamber
Q.7
In germinating seed, R.Q. falls when there is shift from … … [ BHU 1993]
  • a) Carbohydrate to fat as substrate
  • b) Fat to carbohydrate
  • c) Aerobic to anaerobic respiration
  • d) Protein to carbohydrate
Q.8
In mitochondria, ATP synthesis occurs … [ CPMT 1990]
  • a) At the outer membrane
  • b) At the cristae
  • c) In the matrix
  • d) In the intra-cristal space
Q.9
ATP is injected in cyanide poisoning because it is … .. [ CBSE 1994]
  • a) Necessary for cellular functions
  • b) Necessary for Na+ - K+ pump
  • c) Na+ - K+ pump operates at the cell membranes
  • d) ATP breaks down cyanide
Q.10
In glycolysis, glucose splits into compounds which are … ..[ CBSE 1996]
  • a) 5-C
  • b) 4-C
  • c) 2-C
  • d) 3-C
Q.11
Energy required to synthesis ATP from ADP and inorganic phosphate is … .. [ AFMC 2000]
  • a) 2500 cal
  • b) 7600 cal
  • c) 12000 cal
  • d) 20000 cal
Q.12
Number of Oxygen atoms required for complete oxidation of pyruvic acid is … .. [ DPMT 1997]
  • a) 6
  • b) 12
  • c) 3
  • d) 8
Q.13
Hydrogen atoms released at succinate level in Krebs cycle are accepted by … .. [ CPMT 1996]
  • a) NAD
  • b) FAD
  • c) NADP
  • d) ADP
Q.14
Which one is a product of glycolysis, besides 2ATP? … .. [ CPMT 1995]
  • a) FAD
  • b) NADH
  • c) NAD
  • d) NADP
Q.15
R.Q. can vary due to … … [ RPMT 1992]
  • a) Temperature
  • b) respiratory substrate
  • c) Light and oxygen
  • d) Respiratory product
Q.16
ommon phase between aerobic and anaerobic modes of respiration is .. .. [ RPMT 1996]
  • a) krebs cycle
  • b) EMP/glycolysis
  • c) Oxidative phosphorylation
  • d) PPP
Q.17
Which of the following process is used in the conversion of pyruvate to acetyl CoA? [ CEPMT 1990]
  • a) Oxidative decarboxylation
  • b) Oxidative dehydrogenation
  • c) Oxidative dehydration
  • d) Oxidative phosphorylation
Q.18
Identify the membrane across which proton gradient promotes ATP synthesis in eukaryotic cell …. .. [ WB 2012]
  • a) Plasma membrane
  • b) Mitochondrial outer membrane
  • c) Mitochondrial inner membrane
  • d) Nuclear membrane
Q.19
In glycolytic pathway which of the following shows reduction of coenzyme … .. [ Odisha 2010]
  • a) 1,3-diphosphoglycerate to 3-phosphoglycerate
  • b) Glucose 6-phosphate to fructose 6-phosphate
  • c) 3-phosphoglycerate to 2-phospgoglycerate
  • d) Glyceraldehyde 3- phosphate to 1-3, diphosphoglycerate.
Q.20
During EMP pathway, ATP is produced through .. …[ MPPMT 2012]
  • a) Oxidative phosphorylation
  • b) Cyclic phosphorylation
  • c) Substrate phosphorylation
  • d) None of the above
Q.21
he respiratory process of yeast is … .. [ MPPMT 2010]
  • a) Rarely anaerobic
  • b) Anaerobic
  • c) Purely aerobic
  • d) Both aerobic and anaerobic
Q.22
Decarboxylation occurs during .. ..[ MHTCET 2011]
  • a) Glycolysis
  • b) ETS
  • c) Krebs cycle
  • d) All the above
Q.23
Cellular respiration first begins in .. …[ DPMT 2008]
  • a) Cytoplasm
  • b) Golgi bodies
  • c) E.R.
  • d) Lysosomes
Q.24
Aerobic respiration occurs in … … [ MHTCET 2008]
  • a) Mitochondria
  • b) Peroxisomes
  • c) Cytoplasm
  • d) Cytoplasm and mitochondria
Q.25
Lactic acid is produced in the process of … .. [ DPMT 2007]
  • a) Fermentation
  • b) HMP
  • c) Krebs cycle
  • d) Glycolysis
Q.26
RQ of 4, 1 and 0.7 occur in case of … .. [ kerala 2007]
  • a) malic acid, palmitic acid and tripalmitin
  • b) Oxalic acid, carbohydrate and tripalmitin
  • c) Tripalmitin, malic acid and carbohydrate
  • d) Palmitic acid, carbohydrate and oxalic acid
Q.27
Enzyme used in conversion of glucose into glucose 6-phosphate is … ..[ JIPMER 2005]
  • a) Hexokinase
  • b) Isomerase
  • c) Phosphokinase
  • d) Phosphohexokinase
Q.28
Number of glucose molecules required to produce 38 ATP molecules under anaerobic conditions is … ..[ kerala 2004]
  • a) 2
  • b) 4
  • c) 19
  • d) 38
Q.29
hat occurs in glycolysis … .. [ AFMC 2002]
  • a) Fixation
  • b) Reduction
  • c) Dehydration
  • d) Oxidation
Q.30
Which one forms ATP? … ..[ AFMC 2000]
  • a) Fe and P
  • b)N and P
  • c) Fe and Mo
  • d) Mg and Mn
0 h : 0 m : 1 s