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InterviewSolution
This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.
| 651. |
The net gain of energy, from one molecule of sucrose in aerobic respiration, isA. 18 ATPB. 38 ATPC. 60 ATPD. 76 ATP |
| Answer» Correct Answer - D | |
| 652. |
R.Q. for fatty substance/fat isA. UnityB. Less than oneC. Greater than oneD. Zero |
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Answer» Correct Answer - B (B) R.Q. for fatty substance/fat is less than one (0. 7). |
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| 653. |
R.Q. of sprouting photo tubers will beA. 1B. `gt1`C. `lt1`D. Zero |
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Answer» Correct Answer - A (A) RQ of sprouting potato (starch/carbohydrate) is 1. |
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| 654. |
The reaction involved in reduction of `NAD^(+)` isA. Glucose`rarr` Glucose 6-PB. Fructose 1, 6-diphosphate `rarr` PGAL + DiHAPC. Glucose 6-P `rarr` Fructose 6-PD. PGAL `rarr` PGA |
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Answer» Correct Answer - D (D) The reaction involved in reduction of `NAD^(+)` is PGAL `rarr` PGA. |
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| 655. |
Reduction of `NAD^(+)` does not occur in the reactionA. Pyruvic acid `rarr` Acetyl CoAB. Isocitric acid `rarr alpha`-ketoglutaric acidC. Malic acid `rarr` Oxaloacetic acidD. Succinic acid `rarr` Fumaric acid |
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Answer» Correct Answer - D (D) See Answer for Q. 94 from topic-4. |
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| 656. |
A shunt to EMP or a safety valve is calledA. Pentose phosphate pathwaysB. Cyanide resistance pathwaysC. ED pathwayD. ETS |
| Answer» Correct Answer - A | |
| 657. |
When `CO_(2)` is added to PEP. The first stabel product synthesised isA. PyruvateB. Glyceraldehyde-3-phosphateC. PhosphoglycerateD. Oxalacetate |
| Answer» Correct Answer - D | |
| 658. |
An ATP molecule is structurally most similar to a molecule ofA. RNA moleculeB. DNA moleculeC. Amino acidD. Fatty acid |
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Answer» Correct Answer - A ATP is a higher nucleiotide resembling to ribonucleotide having adenline base, ribose sugar and three phosphate groups. |
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| 659. |
Which of the following is link between carbohydrate and fat metabolism ?A. `CO_(2)`B. Acetyl Co-AC. Pyruvic acidD. Citric acid |
| Answer» Correct Answer - B | |
| 660. |
If R. Q. is less than 1.0 in a respiratory metabolism it would mean thatA. Cabrohydrates are used as respiratory substateB. Oraganic acids are used as respiratory substrateC. The oxidation of the respiratory substrate consumed more oxygen than the amount of `CO_(2)` releasedD. The oxidation of the respiratory substrate consumed less oxygen than the amount of `CO_(2)` released |
| Answer» Correct Answer - C | |
| 661. |
Which of the following respiratory substances requires the highest number of `O_(2)` molecules for its complete oxidaiton.A. TrioleinB. Oleic acidC. TripalmitinD. Tartaric acid |
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Answer» Correct Answer - A (A) Triolein requires highest number of oxygen mol- ecules for its complete oxidation. |
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| 662. |
Which of the following respiratory substances requires the highest number of `O_(2)` molecules for its complete oxidaiton.A. TripalmittinB. TrioleinC. Tartaric acidD. Oleic acid |
| Answer» Correct Answer - B | |
| 663. |
Respiration requires `O_(2)`. How did the first cells on the earth magage to survive in an atmosphare that lacked `O_(2)`? |
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Answer» Respiration always does not require `O_(2)`. There are organisms which respire even in absence of `O_(2)`. Through anaerobic respiration. The first cells of earth i.e., chemosynthetic bacteria are the primitive organisms of early life one earth. Obtained energy by breaking down inorganic molecules like `H_(2)S,NO_(2)^(-)` etc. e.g., chemosynthesis occured in sulphur in the following way `12H_(2)S+6CO_(2)toC_(6)H_(12)O_(6)+6H_(2)O+12Sdarr` |
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| 664. |
Match column I with colum II and select the correct option from the codes given below. `{:(ColumnI,ColumnII),(A.TCA "cycle",(i)"Inner mitochondrial membrane"),(B.F_(0)-F_(1)"particles",(ii)"Hans Krebs"),(C."End product of glycolysis",(iii)"Oxidative decarboxylation"),(D."Pyruvate dehydrogenase",(iv)"Pyruvic acid"):}`A. A-(ii),B-(i),C-(iv),D-(iii)B. A-(i),B-(ii),C-(iv),D-(iii)C. A-(ii),B-(iii),C-(iv),D-(i)D. A-(iii),B-(ii),C-(i),D-(iv) |
| Answer» Correct Answer - a | |
| 665. |
Primary acceptor of TCA cycle isA. OAAB. Acetyl CoAC. Citric acidD. Pyruvic acid |
| Answer» Correct Answer - A | |
| 666. |
How many rodox equivalents are removed from two molecules of 3-PGAL ?A. 3B. 4C. 1D. 2 |
| Answer» Correct Answer - B | |
| 667. |
Pyruvic acid is the end product of glycolysis. What are the three metabolic fates of pyruvic acid under aerobic and anaerobic conditions? Write in the space provided in the diagram. |
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Answer» The three metabolic formed under aerobic and anaerobic conditions are (i) Lactic acid (ii) Ethanol (iii) Acetyl Co-A Lactic acid is formed by the oxidation of pyruvic acid in under anaerobic condition in skeletal muscles. Ethanol is formed by the oxidation of pyruvic acid in yeast under anaerobic condition. Acetly Co-A is fromed by the oxidation of pyruvic acid that take place within the mitochondria under aerobic conditon. `"Pyruvic acid "+Co-A+NAD^(+)(Mg^(2+))/("Pyruvate dehydrogenase")"Acetyl"Co-A+CO_(2)+NADH+H^(+)` |
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| 668. |
The number of molecules of pyruvic acid formed from one molecule of glucose at the end of glycolysis isA. OneB. TwoC. ThreeD. Four |
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Answer» Correct Answer - B (B) Two molecules of pyruvic acid formed from one mol- ecule of glucose at the end of glycolysis. |
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| 669. |
Select the statement which is not related to fermentationA. It accounts for only a partial breakdown of glucoseB. It gives only 2ATP as net for glucose degradation upto pyruvic acidC. NADH is oxidized slowly as compared to aerobic respirationD. ETS gives 11ATP for each Krebs cycle |
| Answer» Correct Answer - D | |
| 670. |
Glycolysis occurs inA. All living cellsB. Only eukaryotic cellsC. Nerve cellsD. Only muscle cells |
| Answer» Correct Answer - A | |
| 671. |
What occurs in glycolysisA. FixationB. ReductionC. DehydrogenationD. Oxidation |
| Answer» Correct Answer - D | |
| 672. |
First step of ethyl alochol fermentation requiresA. DehydrogenationB. DecarboxylationC. FMND. `Zn^(2+)` |
| Answer» Correct Answer - B | |
| 673. |
The first step of ethyl alcohol fermentation requiresA. DehydrogenationB. DecarboxylationC. FMND. `Zn^(2+)` |
| Answer» Correct Answer - B | |
| 674. |
Distinguish between the following : (b) Glycolysis and fermentation. . |
| Answer» Breakdown of glucose to pyruvic acid inside the cytosol of living cells is called glycolysis whereas incomplete breakdown of glucose into ethyl alcohol and `CO_(2)` or into lactic acid by prokaryotes and unicellular eukaryotes is called fermentation. The glycolysis occurs inside the cells whereas fermentation occurs outside the cells. | |
| 675. |
Glycolysis occurs inA. VacuolesB. NuclelousC. MitochondriaD. Cytoplasm |
| Answer» Correct Answer - D | |
| 676. |
The numberof molecules of pyruvic acid formed from one molecule of glucose at the end of glycolysis isA. 1B. 2C. 3D. 4 |
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Answer» Correct Answer - B Six carbon glucose molecule forms two molecules of three carbon pyruvic acid. `C_(6)H_(12)O_(6)rarr2C_(3)H_(4)O_(3)+4H` |
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| 677. |
Which step of glycolysis requires pyruvic kinase, `Mg^(++),K^(+) and ADP`?A. Conversion of PEP into pyruvic acidB. Conversion of 3PGA into 2PGAC. Cleavage of Fructose 1-6 BiphosphateD. All of the above |
| Answer» Correct Answer - A | |
| 678. |
Which one of the following is the first step glycolysis ?A. Breakdown of glucoseB. Phosphorylation of glucoseC. Conversion of glucose into fructoseD. Dehydrogenation of glucose |
| Answer» Correct Answer - B | |
| 679. |
During EMP pathway, ATP is produced throughA. Oxidative phosphorylationB. Cyclic phosphorylationC. Substrate phosphorylationD. None of the above |
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Answer» Correct Answer - C (C) During EMP pathway, ATP is produced through substrate phosphorylation. |
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| 680. |
EMP pathway occurs in theA. CytoplasmB. MitochondrionC. ChloroplastD. Lysosome |
| Answer» Correct Answer - A | |
| 681. |
Glycolysis occurs inA. Generally in all the cellsB. In only eukaryotesC. Only in prokaryotesD. Only in higher animals |
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Answer» Correct Answer - A Glycolysis occurs in all the living cells because this is common process in both aerobic and anaerobic respiration. |
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| 682. |
After glycolysis, first step of ethyl alochol fermentation requiresA. DehydrogenationB. DecarboxylationC. FAD reductionD. `Mn^(+2)` acceptance |
| Answer» Correct Answer - B | |
| 683. |
First stage in respiration isA. Aerobic oxidation of pyruvic acidB. Liberation of `CO_(2)`C. GlycolysisD. Electron transport system |
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Answer» Correct Answer - C Breakdown of glucose into 2 molecules of pyruvic acid is known as glycolysis. |
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| 684. |
Total ATP production durig EMP pathway isA. 6 ATPB. 8 ATPC. 24 ATPD. 28 ATP |
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Answer» Correct Answer - B EMP (Embden-Meyerhof Paranas Pathway) refers to glycolysis, in which one molecules of glucose is broken down to two molecules of pyruvic acid. In this process there is a gain of 2NADH `(2xx3 "ATP")` and 2 ATP , i.e. total 8 ATP. |
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| 685. |
Total ATP production durig EMP pathway isA. 24 ATP moleculesB. 8 ATP moleculesC. 38 ATP moleculesD. 6 ATP molecules |
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Answer» Correct Answer - B The net reaction of glycolysis would be `C_(6)H_(12)O_(6)+2ADP+2Pi+2NAD+overset("Glucose")rarr` `underset("Pyruvate")2C_(3)H_(4)O_(3)+2NADH(+H^(+))+2ATP+2H_(2)O` `underset("Glucose")C_(6)+8ADP+8Pirarrunderset("Pyruvide")2C_(3)H_(4)O_(3)+8ATP+2H_(2)O` |
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| 686. |
Which one of the following is the first step of glycolysisA. Breakdown of glucoseB. Phophorylation of glucoseC. Conversion of glucose into fructoseD. Dehydrogenation of glucose |
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Answer» Correct Answer - B Glucose is converted into glucose 6-phosphate is first step of glycolysis. |
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| 687. |
Glycolysis (EMP pathway) takes place in Or Anaerobic respiration takes place in theA. MitochondriaB. CytoplasmC. Both mitochondria and cytoplasmD. Vacuole |
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Answer» Correct Answer - B Glycolysis takes place in the cytoplasm and does not use Oxygen. In anaerobic respiration only glycolysis found. In which there is no need of mitochondria. |
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| 688. |
Anaerobic respiration takes place inA. RibosomeB. NucleusC. VacuoleD. Cytoplasm |
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Answer» Correct Answer - D (D) Anaerobic respiration takes place in cytoplasm. |
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| 689. |
Anaerobic respiration takes place inA. mitochondrionB. nucleusC. cytoplasmD. vacuole |
| Answer» Correct Answer - C | |
| 690. |
Which of the following products are obtained by anaerobic respiration from yeast ?A. Beer and wineB. AlcoholsC. `CO_(2)`D. All of these |
| Answer» Correct Answer - D | |
| 691. |
The term anaerobic respiration was coined byA. KostlychevB. Henry BeeversC. DickensD. Cruickshank |
| Answer» Correct Answer - A | |
| 692. |
Hexose monophosphate shunt isA. Pentose phosphate pathway or a set of reactions that bypasses the glycolysis and Krebs cycle routes for glucose oxidation in the cell.B. Conversion of glucose into pyruvic acid.C. The sum of all chemical transformations.D. The process by which starch is synthesized. |
| Answer» Correct Answer - A | |
| 693. |
The efficiency of respiration is approximatelyA. `45%`B. `50%`C. `90%`D. `30%` |
| Answer» Correct Answer - A | |
| 694. |
Fructose-6-phosphate is changed to Fructose 1-6 biphosphate with the help of enzymeA. phosphoglycerateB. enolaseC. phosphofructokinaseD. phosphatase |
| Answer» Correct Answer - C | |
| 695. |
Fructose 6-phosphate is changed to fructose 1,6-diphosphate byA. PhosphoglycerateB. PhosphataseC. PhosphofructokinaseD. Enolase |
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Answer» Correct Answer - C (C) Fructose 6-phosphate is changed to fructose 1,6-di- phosphate by phosphofructokinase. |
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| 696. |
In glycolysis, enzyme enolase producesA. Phosphoglyceric acidB. Phosphoenol pyruvateC. PhosphoglyceraldehydeD. Pyruvate |
| Answer» Correct Answer - B | |
| 697. |
`NADP^(+)` is reduced to NADPH inA. HMPB. Calvin cycleC. glycoslysisD. EMP |
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Answer» Correct Answer - A Pentose Phosphate Pathway (PPP) or Hexose Monophosphate Shunt (HMP) or phosphogluconate pathway occurs in the cytosol of mammalian cells. It involves oxidation of glucose to `CO_(2)` and water through a series of reactions in which NADP is reduced to NADPH. Complete breakdown of one molecules of glucose forms 12 NADPH equal to 36 ATP molecules. |
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| 698. |
A reduction of NADP to `NADP.H_(2)` is associated withA. ETS-pathwayB. HMP-shuntC. Calvin cycleD. Glycolysis |
| Answer» Correct Answer - B | |
| 699. |
Which of the following set of elements are essential for the photosynthesis to occurA. Cu,Co,FeB. Cu,Mo,ZnC. Mg,Co,MnD. Mg,Fe,Mn,Cu,Cl,P |
| Answer» Correct Answer - D | |
| 700. |
The essential element needed for water splitting in photosynthesis leading to `O_(2)` evolution isA. MoB. MnC. MgD. K |
| Answer» Correct Answer - B | |