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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.
| 501. |
The key product of glycolysis isA. PEPB. Acetyl CoAC. Pyruvic acidD. Glucose |
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Answer» Correct Answer - C (C) The key product of glycolysis is pyruvic acid/pyru- vate. |
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| 502. |
The metabolic fate of pyruvate/pyruvic acid depends onA. Cellular needB. Availability of oxygenC. OrganismD. All of the above |
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Answer» Correct Answer - D (D) The metabolic fate of pyruvate/pyruvic acid depends on cellular need, availability of oxygen and organism. |
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| 503. |
WHAT IS PHOTORESPIRATION? |
| Answer» Photorespiration is a kind of non-mitochondrial respiration (oxidation of carbohydrates) that is initiated in chloroplasts and occurs in conditions of high light intensity, reduced `CO_(2)` levels and raised `O_(2)` levels in temperate plants carrying out `C_(3)` photosynthesis. | |
| 504. |
The phosotynthetic lamellae taken out from a chloroplast and suspended in a nutrient medium in the presence of `CO_(2)` and light. Will they synthesise glucose or not? |
| Answer» No, they will not synthesize glucose due to the lack of enzymes of dark reaction which are found in the stroma of chloroplasts. | |
| 505. |
Cellular respiration occurs inA. ChloroplastB. Glogi bodiesC. MitochondriaD. Nucleus |
| Answer» Correct Answer - C | |
| 506. |
Krebs cycle takes place inA. Mitochondrial matrixB. CytoplasmC. LysosomeD. Nucleus |
| Answer» Correct Answer - A | |
| 507. |
Name the pigmetns which pick up nascent oxygen, released during photo-oxidation of water, and change them into molecular state. |
| Answer» Correct Answer - Carotenoids | |
| 508. |
R.Q. of malic acid isA. `1.3`B. 4C. 0.7D. 1 |
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Answer» Correct Answer - A (A) R.Q. for malic acid is 1.3. |
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| 509. |
R.Q. for organic acid isA. 1B. `gt1`C. `lt1`D. 0 |
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Answer» Correct Answer - B (B) R.Q. for organic acid is `gt` 1. |
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| 510. |
Before entering respiratory pathway. Amino acid areA. DecarboxylatedB. HydrolysedC. DeaminatedD. Phosphorylated |
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Answer» Correct Answer - C (C) Before entering respiratory pathway, amino acids are deaminated. |
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| 511. |
Energy required to form glucose from pyruvate is equivalent toA. 32 ATPB. 16 ATPC. 8 ATPD. 4 ATP |
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Answer» Correct Answer - C (C) Energy required to form glucose from pyruvatc is equivalent to 8 ATP `(2 NADH + 2 ATP)`. |
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| 512. |
RQ is more than one indicatingA. Aerobic respirationB. Anaerobic respirationC. Both A and BD. None of the above |
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Answer» Correct Answer - C (C) RQ can be more than one in both aerobic and anaerobic respiration. |
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| 513. |
R.Q. for glucose (carbohydrates) isA. 1B. 0.5C. 2D. 0.005 |
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Answer» Correct Answer - A `C_(6)H_(12)O_(6)+6O_(2)rarr6CO_(2)+6H_(2)O` `R.Q.=("Vol. of" CO_(2))/("Vol. of" O_(2))=(6)/(6)=1` |
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| 514. |
R.Q. for glucose (carbohydrates) isA. 1B. 0.7C. 2D. 0.9 |
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Answer» Correct Answer - A (A) R.Q. for glucose/carbohydrate is 1. |
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| 515. |
Number of NADH produced during breakdown of one molecule of glucose to 1 : 3 diphosphoglycerate stage isA. 6B. 4C. 3D. 2 |
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Answer» Correct Answer - D (D) Two NADH produced during breakdown of one mol- ecule of glucose to 1, 3-diphosphoglycerate. |
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| 516. |
Aerobic respiratory pathway is appropriately termedA. AnabolicB. CatabolicC. AmphibolicD. Parabolic |
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Answer» Correct Answer - C (C) Aerobic respiratory pathway is appropriately termed amphibolic. |
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| 517. |
Aerobic respiratory pathway is appropriately termedA. ParabolicB. AmphilbolicC. AnabolicD. Catabolic |
| Answer» Correct Answer - B | |
| 518. |
Aerobic respiratory pathway is appropriately termedA. AmphibolicB. AnabolicC. CatabolicD. Parabolic |
| Answer» Correct Answer - A | |
| 519. |
Which of the following does not function as an electron carrier ?A. Coenzyme-QB. Cytochrome-CC. Cytochrome-aD. `H_(2)O` |
| Answer» Correct Answer - D | |
| 520. |
At the end of citric acid cycle most of the energy is transferred toA. `NADH" and "FADH_(2)`B. Oxaloacetic acidC. Citric acidD. ATP |
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Answer» Correct Answer - A (A) At the end of citric acid cycle most of the energy is transferred to `NADH" and `FADH_(2)` . |
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| 521. |
All enzymes of TCA cycle are located in the mitochondrial matrix except one which is located in inner mitochondrial membranes in eukaryoes and in cytosol in prokaryotes. This enzyme isA. Lactate dehydrogenaseB. Malate dehydrogenaseC. Isocitrate dehydrogenaseD. Succinate dehydrogenase |
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Answer» Correct Answer - D (D) Enzyme of TCA which is located in inner mitochon- drial membrane in eukaryotes and cytosol in prokary- otes is succinate dehydrogenase. |
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| 522. |
Fruit keep better in refrigeration, this is due toA. Absence of moistureB. Accumulation of `O_(2)`C. Inactivation of respirationD. |
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Answer» Correct Answer - D Respiratory rate is low in refrigeration. |
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| 523. |
A characteristic feature of ripening of some fruits (such as banana) is a sudden increase in respiration, which is known asA. ClimaticB. PhotorespirationC. AnthesisD. Climateric |
| Answer» Correct Answer - D | |
| 524. |
A characteristic feature of ripening of some fruits (such as banana) is a sudden increase in respiration, which is known asA. AnthesisB. ClimaticC. PhotorespirationD. |
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Answer» Correct Answer - A Some fruits(e.g. banana and apple) show high rates of respiration during their ripening. This rise in respiratory rate is calleld climateric |
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| 525. |
R.Q. is maximum when respiratory substrate isA. Malic acidB. GlucoseC. ProteinD. |
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Answer» Correct Answer - B Because malic acid is an organic acid, which after oxidation produces more `CO_(2)`, due to which the value of R.Q. is four. |
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| 526. |
An indispensable role in energy metabolism is played byA. PhosphorusB. CalciumC. PotassiumD. |
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Answer» Correct Answer - B Because phosphorus produces energy coins ATP. |
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| 527. |
Cyt `a_(3)` possessesA. Fe and CuB. FeC. MnD. Fe, Mn + Cl |
| Answer» Correct Answer - A | |
| 528. |
The energy-releasing process in which the substrate is oxidised without an external electron acceptor is calledA. Aerobic respirationB. GlycolysisC. FermentationD. Photorespiration |
| Answer» Correct Answer - B | |
| 529. |
Match the following and choose the correct option from those given below. `{:(Column A,Column B),(A."Molecular oxygen",i.alpha-"Ketoglutaric acid"),(B."Electron acceptor",ii."Hydrogen acceptor"),(C."Pyruvate dehydrogenase",iii."Cytochrome"C),(D."Decarboxylation",iv."Acetyl"CoA):}`A. A-ii,B-ii,C-iv,D-iB. A-iii,B-iv,C-ii,D-iC. A-ii,B-I,C-iii,D-ivD. A-iv,B-iii,C-I,D-ii |
| Answer» Correct Answer - a | |
| 530. |
Match the following and choose the correct option from those given below. `{:("Colume A","Colume B"),("(A) Molecular oxgen","(i)"alpha-"Ketoglutaric acid"),("(B) Eletron acceptor","(ii) hydrogen acceptor"),("(C) Pyruvate dehydrogenase","(iii) cytochrome C"),("(D) Decarboxylation ","(iv) acetyl Co A"):}`A. (A)-(ii), (B)-(iii), (C)-(iv), (D)-(i)B. (A)-(iii), (B)-(iv), (C)-(ii), (D)-(i)C. (A)-(ii), (B)-(i), (C)-(iii), (D)-(iv)D. (A)-(iv), (B)-(iii), (C)-(i), (D)-(ii) |
| Answer» Correct Answer - A | |
| 531. |
Why is the colour of a leaf kept in the dark frequently yellow, or pale green? Which pigment do you think is more stable? |
| Answer» Carotein is much more stable as compared to chlorophyll and does not breakdown easily. Therefore, the leaf appears yellow or pale green due to stable carotenoids whereas the green chlorphyll breakdown if the leaf is kept in dark. | |
| 532. |
All enzymes of TCA cycle are located in the mitochondrial matrix except one which is located in inner mitochondrial membranes in eukaryotes and in cytosol in prokaryotes. This enzyme isA. lactate dehydrogenaseB. isocitrate dehydrogenaseC. malate dehydrogenaseD. succinate dehydrogenase |
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Answer» Correct Answer - D Succinate dehyrogenase enzyme is present on inner membrane of mitochondria and catalyses the oxidation of succinate to fumarate |
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| 533. |
All enzymes of TCA cycle are located in the mitochondrial matrix except one which is located in inner mitochondrial membranes in eukaryotes and in cytosol in prokaryotes. This enzyme isA. Succinate dehydrogenaseB. Lactate dehydrogenaseC. Isocitrate dehydrogenaseD. Malate dehydrogenase |
| Answer» Correct Answer - A | |
| 534. |
All enzymes of TCA cycle except succinic dehyd rogenase and cytochrome oxidase are found inA. cytosole and oxysomesB. matrix of mitochondrionC. inner membrane of mitochondrionD. outer membrane of mitochondrion |
| Answer» Correct Answer - B | |
| 535. |
What is the remarkable property of RuBisCO? What conditions enable RubisCo to function as an oxygenase? Explain. |
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Answer» The enzyme RUBisCO has the remarkable property of fixing not only `CO_(2)` but also `O_(2)`. Hence, the name of same enzyme performing the dual role, is RUBP carboxylase oxygenase or RuBisCo. This enzyme under normal `CO_(2)` conc. Fixes `CO_(2)`. However, when atmospheric conc. of `CO_(2)` is low (i.e., below 1%) and increased concentration of `O_(2)`, this enzyme acts as oxygenase and fixes `O_(2)`. Ribulose-1,5 bisphosphate `overset(O_(2))to 2` Phosphoglycolic acid + 3 Phosphoglyceric acid. |
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| 536. |
What is warburg effect? In which kind of plants is it mostly observed? |
| Answer» Inhibitions of photosynthesis due to high `O_(2)` level is termed warburg effect. It was observed mostly in `C_(3)` plants. | |
| 537. |
Inner mitochondrial membrane possesses enzymesA. AT Pase, succinic dehydrogenase cytochrome oxidase .B. Malate dehydrogenase, citrate synthetaseC. Diphosphokinase and cyclaseD. citrate synthetase |
| Answer» Correct Answer - A | |
| 538. |
Which enzymes of the citric acid cycle occur in the inner mitochondrial membrane ? |
| Answer» `alpha`-ketoglutarate and succinate dehydrogenases. | |
| 539. |
An outline diagram of Krebs cycle is given below. Label 1-12 and also mention the number of carbon atoms in each molecule . |
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Answer» Labels 1. Pyruvic acid (3 C) `" "` 2. Acetyl Co-A (2 C) 3. Citric acid (6 C) `" "` 4. Cis aconitic acid (6 C) 5. Iso citric acid (6 C) `" "` 6. Oxalosuccinic acid (6 C) 7. `alpha`-Keto glutaric acid (5 C) `" "` 8. Succinyl Co-A (4 C) 9. Succinic acid (4 C) `" "` 10. Fumaric acid (4 C) 11. Malic acid (4 C) `" "` 12. Oxalo acetic acid (4 C) |
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| 540. |
`ATP` formation in chloroplast and mitochondrion is explained byA. Lock and Key Theory of FisherB. Chemiosmotic Theory of MitchellC. Lipmann and Lohmann TheoryD. Chemical coupling theory |
| Answer» Correct Answer - B | |
| 541. |
Which one of the following products is fomred glycolysis of glucoseA. Pyruvic acidB. Carbon dioxideC. Citric acidD. Ethanol |
| Answer» Correct Answer - A | |
| 542. |
ATP formation in glycolyis isA. oxidation phosphorylationB. PhotophosphorylationC. Reductive phosphorylationD. Substrate level phosphorylation |
| Answer» Correct Answer - s | |
| 543. |
Given below are some reactions and the enzymes involved. Identify the correct pairs. A. 1-D, 2-C, 3-B, 4-AB. 1-A, 2-B, 3-C, 4-DC. 1-B,2-A,3-D, 4-CD. 1-C, 2-D, 3-A, 4-B |
| Answer» Correct Answer - A | |
| 544. |
Which of the following process occus in glycolysisA. OxidationB. ReductionC. HydrogentationD. Fixation |
| Answer» Correct Answer - A | |
| 545. |
At inner membrane of mitochondria, passing on the electron removed as part of the hydrogen atoms to molecular `O_(2)` with simultaneous synthesis of ATP occurs. |
| Answer» Correct Answer - 1 | |
| 546. |
In mitochondrial matrix complete oxidation of pyruvate takes place in which all the hydrogen atoms are removed, leaving three molecules of `CO_(2)` |
| Answer» Correct Answer - 1 | |
| 547. |
Krebs cycle which is also called aerobic respiration require `O_(2)` supply. |
| Answer» Correct Answer - 1 | |
| 548. |
Carbon skeleton produced during respiration. (Eg. `alpha`-ketoglutarate, OAA etc. intermediates) are used as precursor for biosynthesis of other molecules in the cell. |
| Answer» Correct Answer - 1 | |
| 549. |
The correcrt sequence of electron acceptor in ATP synthesis isA. Cyt. `a, c, a_(3), a`B. Cyt. `c,b,a,a_(3)`C. Cyt. `a_(3),a,b,c`D. Cyt. `b,c,a,a_(3)` |
| Answer» Correct Answer - D | |
| 550. |
Hydrogen released from substrate by dehydrogenase rquires from substrate by dehydrogenase requires one of the following before reducing coenzyme NADA. ElectronsB. ProtonsC. PhotonsD. Both Band C |
| Answer» Correct Answer - A | |