InterviewSolution
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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.
| 1. |
Find out the values of x, y and z in the given equation : `2(C_(51)H_(98)O_(6))+xO_(2)rarryCO_(2)+zH_(2)O+` EnergyA. x- 102, y- 145, z- 98B. x- 145, y- 102, z- 98C. x- 98, y- 102, z- 145D. x- 145, y- 98, z- 102 |
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Answer» Correct Answer - B (B) `2(C_(51) H_(98)0_(6)) + 145 0_(2) rarr 102 CO_(2) + 98 H_(2)0` + Energy |
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| 2. |
Refer the given equation. `2(C_(51)H_(98)O_(6)) + 145O_(2) rarr 102CO_(2) +98H_(2)O +` Energy The RQ in this case isA. 1B. 0.7C. 1.45D. 1.62 |
| Answer» Correct Answer - B | |
| 3. |
Refer the given equation. `2(C_(51)H_(98)O_(6)) + 145O_(2) rarr 102CO_(2) +98H_(2)O +` Energy The RQ in this case isA. 1B. 0.7C. 1.45D. 1.62. |
| Answer» Correct Answer - B | |
| 4. |
Refer the given equation. `2(C_(51)H_(98)O_(6)) + 145O_(2) rarr 102CO_(2) +98H_(2)O +` Energy The RQ in this case isA. 0·7B. `oo` (infinity)C. 1·45D. 1·62 |
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Answer» Correct Answer - A (A) R.Q. `=(102)/(146)= 0.7` |
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| 5. |
In glycolysis, glucose splits into compounds which areA. 5-CB. 4-CC. 2-CD. 3-C |
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Answer» Correct Answer - D (D) In glycolysis, glucose splits into compounds (pyruvic acid) which are 3-C. |
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| 6. |
Make corrections wherever you find mistake in spellings/words in the following paragraphs :- A. When fats are used in respiration, the RQ is more than unity because fats contain more `O_(2)` and require relatively less amount of `O_(2)` for oxidation. B. The most important energy carrier is ATP. This energy rich compound is mobile and can pass from one cell into another. C. Before pyruvic acid enters Krebs cycle, one of the two carbon atoms of pyruvic acid is reduced to carbon dioxide in the reaction called reductive carboxylation. The remaining two carbon pyruvate unit is accepted by coenzyme A to form acetyl coenzyme A. |
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Answer» A. When fats are used in respiration, the RQ is less than unity because fats contain less `O_(2)` require relatively greater amount of `O_(2)` for oxidation. B. The most important energy carrier is ATP . This energy rich compound is mobile but cannot pass from one cell into another. C. Before pyruvic acid enters Krebs cycle, one of the three carbon atoms of pyruvic acid is oxidised to carbon dioxide in the reaction called oxidative decarboxylation. The remaining two carbon acetate unit is accepted by coenzyme A to form acetyl coenzyme A. |
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| 7. |
Respiratory quotient of which diet is less than unity ?A. CarbohydrateB. FatsC. Organic acidD. Sugar |
| Answer» Correct Answer - B | |
| 8. |
Which of the following is the product of glucose fermentation by yeast ?A. `C_(6)H_(12)O_(6)`B. `C_(2)H_(5)OH`C. `(C_(6)H_(10)O5)_(n)`D. `CH_(2)OH` |
| Answer» Correct Answer - B | |
| 9. |
Which of the molecule listed below is a product of fermentation of glycose by yeast?A. `(C_(6)H_(10)O_(5))_(n)`B. `C_(2)H_(5)OH`C. `C_(6)H_(12)O_(6)`D. `CH_(3)OH` |
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Answer» Correct Answer - B In yeast, the incomplete oxidation of glucose is achieved under anaerobic conditions by sets of reactions where pyruvic acid is converted to `CO_(2)` and `C_(2)H_(5)OH` (ethanol) |
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| 10. |
Respiratory quotient may be represented asA. Volume of `CO_(2)` evolved = volume of `O_(2)` consumedB. (Volume of `O_(2)` consumed)/(Volume of `CO_(2)` evolved)C. (Volume of `CO_(2)` evolved)/(Volume of `O_(2)` consumed)D. (Volume of `O_(2)` evolved)/(Volume of `CO_(2)` consumed) |
| Answer» Correct Answer - C | |
| 11. |
Fermentation products of Yeast areA. `H_(2)O + CO_(2)`B. methyl alcohol `+CO_(2)`C. methyl alcohol `+H_(2)O`D. ethyl alcohol `+ CO_(2)` |
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Answer» Correct Answer - D Yeast cells undergo alcoholic fermentation in which glucose is first converted into pyruvic acid . In the presence of pyruvic decarboxylase, it is changed into acetaldehyde. Alcohol dehydrogenase changes it to ethyl alcohol and `CO_(2)` |
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| 12. |
The correct relationship of value of Respiratory Quotient isA. Glucose symbol gt Fats symbol gt Organic acidB. Glucose symbol lt Fats symbol lt Organic acidC. Fats symbol gt Glucose symbol lt Organic acidD. Fats symbol lt Glucose symbol lt Organic acid |
| Answer» Correct Answer - D | |
| 13. |
In succelents respiratory quotient is always less than one because ofA. Complete oxidationB. Complete oxidationC. Incomplete oxdationD. Incomplete oxidation. |
| Answer» Correct Answer - C | |
| 14. |
If a substance is rich in oxygen, then value of RO (Respiratory Quotient) will beA. unityB. ess than 1C. greater than 1D. 0 |
| Answer» Correct Answer - C | |
| 15. |
The respiratory substrate yielding maximum number of ATP molecules among the following isA. Ketogenic amino acidsB. GlucoseC. AmyloseD. Glycogen |
| Answer» Correct Answer - B | |
| 16. |
When proteins are respiratory substrate, RQ will beA. 0.7B. 1C. 0.9D. More than one |
| Answer» Correct Answer - C | |
| 17. |
The respiratory substrate yielding maximum number of ATP molecules among the following isA. GlycogenB. Ketogenic amino acidC. GlucoseD. Amylose |
| Answer» Correct Answer - C | |
| 18. |
When respiratory substrate is cereal/ starchsprouting potato tuber, then RO value is |
| Answer» Correct Answer - B | |
| 19. |
When production of `CO_2` is more than intake of `O_2`, the respiratory substrate isA. sucroseB. organic acidC. glucoseD. fat/protein |
| Answer» Correct Answer - B | |
| 20. |
Succulents have their stomata closed during the day time. How do they get `CO_(2)` for photosynthesis? |
| Answer» Succulents (e.g. Bryophyllum, Kalanchoe, Sedum, Calcycinum, etc). Are xerophytes and grow under semi-arid conditons. They have their stomata closed during the day time and open at night (in dark). This helps these plants to conserve their water content which otherwise would be lost under extremely dry conditons. These plants fix atmospheric `CO_(2)` into organic acids (such as malic acid, oxalo acetic acid, etc.) at night when the stomata are open. Conversions of `CO_(2)` into organic acids is called acidification. The fixed `CO_(2)` is released during the day by the process of deacidification which is used in photosynthesis. | |
| 21. |
Succulents are known to keep their stomata closed during the day to check transpiration. How do they meet their photosynthetic `CO_(2)` requirements ? |
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Answer» Succulent (water storing) plants such as cacti, euphorbias fix `CO_(2)` into orgnic compound using PEP carboxylase at night, when the stomata are open. `PEP + CO_(2) to OA(A)` `OA(A) to to to "Malic acid"` The organic compound (malic acid) accumulates throughout the night and is decarboxylated during the day to produce `CO_(2)`. |
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| 22. |
RO value in succulents/CAM plants in night isA. lt1B. unityC. gt1D. |
| Answer» Correct Answer - D | |
| 23. |
The first stable product in `CAM//C_(4)` plants isA. Oxaloacetic acidB. Phosphoenol pyruvateC. Ribulose 1,5 diphosphateD. Malic acid |
| Answer» Correct Answer - A | |
| 24. |
Acid concentration in CAM plants is more atA. nightB. daytimeC. downD. dusk |
| Answer» Correct Answer - A | |
| 25. |
Which one of the following concerns photophosphorylation?A. ADP + AMP `overset("Light energy") to` ATPB. ADP + Inorganic `PO_(4) overset("Light energy") to` ATPC. ADP + Inorganic `PO_(4) to` ATPD. AMP + Inorganic `PO_(4) overset("Light energy") to` ATP |
| Answer» Correct Answer - B | |
| 26. |
Which of the following concerns photophosphorylationA. `AMP + "inorganic "PO_(4) overset("Light energy")to ATP`B. `ADP + AMP overset("Light energy")to ATP`C. `ADP + "inorganic "PO_(4) overset("Light energy")to ATP`D. `ADP + "inorganic"PO_(4) to ATP` |
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Answer» Correct Answer - C Phosphorylation refers to the process in which ATP is made when energy is used to bind another phosphate to ADP . Photophosphorylation reactions are part of both respiration and photosynthesis. |
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| 27. |
Respiration isA. anabolic and exothermicB. anabolic and endothermicC. catabolic and endothermicD. catabolic exothermic |
| Answer» Correct Answer - D | |
| 28. |
For formation of ethanol, pyruvic acid is first changed to acetaldehyde by enzymeA. Pyruvate dehydrogenaseB. Pyruvate decarboxylaseC. Alcohol oxidaseD. Alcohol dehydrogenase |
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Answer» Correct Answer - B (B) For formation of ethanol, pyruvic acid is first changed to acetaldehyde by enzyme pyruvate decarboxylase. |
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| 29. |
Which of the following is produced in oxidative pentose phosphate pathwayA. Pyruvic acidB. Acetyl CoAC. `NADH_(2)`D. NAD (P) H |
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Answer» Correct Answer - D (D) NAD (P) H is product of oxidative pentose phosphate pathway. |
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| 30. |
Glucose administered orally will be used up inA. ExcretionB. DigestionC. RespirationD. Circulation |
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Answer» Correct Answer - C (C) Glucose administered orally will be used up in respiration. |
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| 31. |
A reaction catalysed by an enzyme not found in mitochondiral matrixA. Conversion of pyruvic acid to acetyl CoAB. Oxidative decarboxylation of `alpha`-ketoglutaric acidC. Oxidation of succinic acidD. Cleavage of succinyl CoA |
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Answer» Correct Answer - C (C) A reaction catalysed by an enzyme (succinate dehydrogenase) not found in mitochondrial matrix. |
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| 32. |
3-Phosphoglyceraldehyde is oxidised in glycolysis to formA. 1. 3-biphosphoglycerateB. 3- phosphoglycerateC. 2- phosphoglycerateD. Phosphoenol pyruvate |
| Answer» Correct Answer - A | |
| 33. |
`F_(1)` particle of oxysomeA. Releases proton energyB. Utilises proton energyC. Has no role in energy consumptionD. Lies in outer chamber |
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Answer» Correct Answer - B (B) `F_(1)` particle of oxysome utilises proton energy. |
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| 34. |
How many protons are accumulated in intermembrane space of mitochondria from one molecule of NADH during ETS?A. TwoB. ThreeC. FourD. Six |
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Answer» Correct Answer - D (D) `6H^(+)` protons are accumulated in intermembrane space of mitochondria from one molecule of NADH during ETS. |
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| 35. |
Consider the first reaction of TCA cycle. Acetyl `CoA + OA A +H_(2)O overset("Citrate")underset("synthase")rarr A + CoA` What is true about compound A?A. First product of TCA cycleB. Tricarboxylic acid and six carbon compoundC. It undergoes reorganisation in the presence of enzyme aconitase to form cis-aconitateD. All of these |
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Answer» Correct Answer - D The TCA cycle starts with the condensation of acetyl group with oxaloacetic acid and water to yield citric acid. It is tricarboxylic 6-carbon compound and undergoes reorganisation in the presence of iron containing enzyme aconitase first forming cis aconitrate and releasing water `"Citrate" underset(Fe^(2+))overset("Aconitase")(hArr) cis-"aconitate" +H_(2)O` |
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| 36. |
In oxidative photophosphorylation, the last 3 steps are as follows `Q to C to aa_(3) to O_(2)`A. Q `to` C is `H^(+)` absorbing siteB. `aa_(3)toO_(2_(+))H^(+)` yielding siteC. Q `to` C is `H^(+)` yielding site and `aa_(3) to O_(2)` is `H^(+)` absorbing siteD. No `H^(+)` is absorbed or released |
| Answer» Correct Answer - C | |
| 37. |
Proton channel is found inA. `F_(0)` of ATPaseB. `F_(1)` of ATPaseC. Cyt cD. CoQ |
| Answer» Correct Answer - A | |
| 38. |
How many complexes are involved in electron transport in mitochondria ?A. 1B. 2C. 4D. 5 |
| Answer» Correct Answer - C | |
| 39. |
Which is key intermediate compound linking glycolysis to Krebs cycle ?A. NADHB. ATPC. Acetyl CoAD. malic acid |
| Answer» Correct Answer - C | |
| 40. |
Proton channel occurs inA. `F_0`B. `F_1`C. `F_4`D. `F_5` |
| Answer» Correct Answer - A | |
| 41. |
Where does ETS occur in our body ?A. CytoplasmB. Mitochondrial matrixC. Inner mitochondrial membraneD. Outer mitochondrial membrane |
| Answer» Correct Answer - C | |
| 42. |
Succinate dehydrogenase catalyzes the formation ofA. `FADH_(2) to FAD`B. `FAD to FADH_(2)`C. `NAD to NADH+H^(+)`D. `NADH + H^(+) to FADH_(2)` |
| Answer» Correct Answer - B | |
| 43. |
Which is key intermediate compound linking glycolysis to Krebs cycle ?A. Malic acidB. Acetyl CoAC. NADHD. ATP |
| Answer» Correct Answer - B | |
| 44. |
The overall goal of glycolysis, Krebs cycle, and the electron transport system is the formation ofA. Nucleic acidsB. ATP in small stepwise unitsC. ATP in one large oxidation reactionD. Sugars |
| Answer» Correct Answer - B | |
| 45. |
Location of SDH enzyme of Krebs cycle in plants isA. Plasma membraneB. Inner mitochondrial membraneC. CytoplasmD. Matrix |
| Answer» Correct Answer - B | |
| 46. |
Hydrogen atoms released at succinate level in Krebs cycle are accepted byA. FADB. NADC. ADPD. FMN |
| Answer» Correct Answer - A | |
| 47. |
What is the net gain in a Krebs cycle ?A. `1 FADH_(2), 2 NADH_(2) "and " 1 ATP`B. `2 FADH_(2), 2 NADH_(2) "and " 2 ATP`C. `1 FADH_(2), 3 NADH_(2) " and " 1 ATP`D. `1 FADH_(2), 6 NADH_(2) " and " 2 ATP` |
| Answer» Correct Answer - C | |
| 48. |
How many molecules of `CO_(2)` are released during two turns of Krebs cycle ?A. 2B. 6C. 4D. 3 |
| Answer» Correct Answer - C | |
| 49. |
The enzymes of Krebs cycle where `NADH+H^(+)` are produced areA. Isocitrate dehydrogenase, succinate dehydrogenase and malic dehydrogenaseB. Succinate thiokinase, succinate dehydrogenase and aconitaseC. Isocitrate dehydrogenase, `alpha`-ketoglutaric dehydrogenase, malic dehydrogenaseD. Isocitrate dehydrogenase, `alpha`-ketoglutaric dehydrogenase and succinate dehydrogenase |
| Answer» Correct Answer - C | |
| 50. |
Assertion. All the enzymes participating in the Krebs cycle reactions occur in the matrix of mitochondria. Reason. Krebs cycle generates GTP in animal as well as plant cells.A. If both A and R are true and R is the correct explanation of A.B. If both A and R are true but R is not the correct explanation of A.C. If A is true but R is false.D. If both A and R are false. |
| Answer» Correct Answer - D | |