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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.
| 251. |
Which of the following process makes direct use of oxygen ?A. GlycolysisB. FermentationC. Electron transportD. Citric acid cycle |
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Answer» Correct Answer - C (C) Electron transport processes makes direct use of oxygen. |
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| 252. |
Link reaction between glycolysis and Krebs cycle isA. Pyruvate `rarr` Acetyl CoAB. PGAL `rarr` 1, 3 diPGAC. Citric acid `rarr` lsocitric acidD. Malate `rarr` OAA |
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Answer» Correct Answer - A (A) Link reaction between glycolysis and Krebs cycle is Pyruvate `rarr` Acetyl CoA. |
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| 253. |
The ratio of the volume of `CO_(2)` evolved to the volume of `O_(2)` consumed in respiration is called. |
| Answer» Correct Answer - Respiratory quotient (RQ) or Respiratory ratio | |
| 254. |
Which of the following statements will regard to photosynthesis is/are correct? In `C_(4)` plants, the primary `CO_(2)` acceptor is PEP energy at or just below 680 nm. The pigments that is present in the pigment system I is `P_(683)`.A. b and c onlyB. a) onlyC. c) onlyD. a) and d) only |
| Answer» Correct Answer - D | |
| 255. |
The total requirement of ATP and NADPH for each molecule fo `CO_(2)` fixed and reduced in photosynthesis in the Calvin cycle isA. 2 ATP and 2 NADPHB. 2 ATP and 3 NADPHC. 3 ATP and 2 NADPHD. 4 ATP and 3 NADPH |
| Answer» Correct Answer - C | |
| 256. |
In the overall process of photosynthesis , the number of `CO_(2)` water , sugar and `O_(2)` molecules utilized and produced isA. 12B. 13C. 19D. 31 |
| Answer» Correct Answer - D | |
| 257. |
In photosynthesis, light independent reactions take place atA. Stromal matrixB. Thylakoid lumenC. Photosystem-ID. Photosystem -II |
| Answer» Correct Answer - A | |
| 258. |
The blue-green algae are so called as they have in addition to green pigment chlorophyll, a blue pigment known asA. phycocyaninB. cytochrome-cC. chlorophyll-bD. `beta`-carotene |
| Answer» Correct Answer - A | |
| 259. |
Which of the following product is formed by Krebs cycle ?A. Acetyl CoAB. ADPC. ATPD. `NAD^(+)` |
| Answer» Correct Answer - C | |
| 260. |
During electron transport system (ETS) electron transport proceeds from carries that have ________redox potential to those having_____redox potential. This electront transport down the energy gradient leads to the formation of ATP from ADP and Pi, which is referred to as___________.A. low, high, oxidative phosphorylationB. low, high, oxidative decarboxylationC. high, low, oxidative phosphorylationD. high, low, oxidative decarboxylation |
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Answer» Correct Answer - a Many intermediate cytochromes and other carriers having their intermediate redox potentials are arranged in a series which transport electrons from NADH of `FADH_(2)` to `O_(2)`. This sequence of electron carriers constitutes the electron transport system (ETS). The electron transport to those having high redox potential. The electron transport down the energy gradient through electron transport system leads to the formation of ATP from ADP and inorganic phosphate. This generation of ATP is called as oxidative phosphorylation. |
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| 261. |
How many carbon atoms are present in Acetyl CoA ?A. 2B. 6C. 4D. 3 |
| Answer» Correct Answer - A | |
| 262. |
Rate of respiration shallA. where no light is presentB. in winterC. in high temperatureD. in rainy season |
| Answer» Correct Answer - C | |
| 263. |
The reaction forming 3-phosphoglyceric acid in glycolysis isA. CleavageB. Oxidative phosphorylationC. DephosphorylationD. Oxidative decarboxylation |
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Answer» Correct Answer - C (C) The reaction forming 3-phosphoglyceric acid in gly- colysis is dephosphorylation. |
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| 264. |
During night, a person should not sleep under a tree because the treeA. Releases `0_(2)` during nightB. Does not release `CO_(2)` during nightC. Releases `CO_(2)` during nightD. Releases water during guttation |
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Answer» Correct Answer - C (C) A person should not sleep under a tree because the tree releases `CO_(2)` during night. |
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| 265. |
In Which step, `CO_2` is not released ?A. GlycolysisB. Lactic acid fermentationC. Oxidation of malic acid into OAAD. All of the above |
| Answer» Correct Answer - D | |
| 266. |
Anerobic respiration is also known asA. Intra molecular respirationB. Extramolecular respirationC. Molecular respirationD. |
| Answer» Correct Answer - A | |
| 267. |
Which range of wavelength (in nm) is called photosynthetically active radiation (PAR)?A. 100-390B. 390-430C. 400-700D. 760-100,00 |
| Answer» Correct Answer - C | |
| 268. |
Products of anaerobic respiration areA. Ethyl alcochol and lactic acid onlyB. Ethyl alochol and `CO_(2)` and metabolic `H_(2)O`C. Ethyl alochol, metabolic `H_(2)O, CO_(2)` and lactic acidD. Ethyl alcohol, `CO_(2)` or lactic acid |
| Answer» Correct Answer - D | |
| 269. |
Assertion: `C_(4)` plants are better adapted in tropical and desert areas. Reason: `C_(4)` plants can perform a high rate of photosynthesis even when the stomata are nearly closed.A. If both Assertion and Reason are true and the Reason is a correct explanation of the Assertion.B. If both Assertion and Reason are true but Reason is not a correct explanation of the Assertion.C. If Assertion and Reason are true but Reason is not a correct explanation of the Assertion.D. If Assertion is true but the Reason is false. |
| Answer» Correct Answer - A | |
| 270. |
Select the correct statement w.r.t. Krebs cycleA. Occurs in cytoplasm and mitochondria in the absence of `O_(2)`B. Favoured by coenzyme `NADP^(+)`C. Intermediate products contain four, five and six carbon atomsD. Substrate molecule is a 3C compound |
| Answer» Correct Answer - C | |
| 271. |
Study the given and select the incorrect option regarding this. A. The figure represents chemiosmotic ATP synthesis by oxysomes where X is the mitochondrial matrix and Y is the inner mitochondrial membrane.B. Enzyme required for ATP synthesis is ATP synthase, considered to be the complex,-V of ETSC. The figure represents oxidative phosphorylation which is the syntheis of energy rich ATP molecules with the help of energy liberated during oxidation of reduced co-enzymes `(NADH-FADH_(2))` produced in respirationD. ATP synthase becomes active only when there is a proton gradinet having higher concentration of protons `(H^(+))` on the inner side `(F_(1)` side) as compared to the outer side `(F_(0)` side). |
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Answer» Correct Answer - d ATP synthase is located in `F_(1)` or head piece of `F_(0) - F_(1)` or elementary particles. The particles are present in the inner mitochondrial memebrane. ATp-synthase become acive in ATP formation only when there is a proton gradient having higher concentration of `H^(+)` or protons on the `F_(0)` side as compared to `F_(1)` side. increased proton concentration is produced in the outer chamber or outer surface of inner mitochondrial membrane by the pushing of protons with the help of energy liberated by passage of electron from one carrier to another. |
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| 272. |
Connecting link between respiration (TCA cycle) and protein synthesis isA. Citric acidB. `alpha`-ketoglutaric acidC. Succinic acidD. Fumaric acid |
| Answer» Correct Answer - B | |
| 273. |
In which of the following reaction of glycolysis, a molecule of water is removed from the substrateA. 2- phosphoglycerate `rarr` PEPB. PEP `rarr` Pyruvic acidC. Glucose`rarr` Glucose 6-phosphateD. Fructose, 6-phosphate `rarr` Fructose I. 6-biphosphate |
| Answer» Correct Answer - A | |
| 274. |
`2H_(2)O to 4H^(+)+O_(2)+4e^(-)` Based on the above equation, answer the following questions (a) Where does this reaction take place in plants ? (b) What is the significance of this reaction ? |
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Answer» a) Lumen of the thylakoids. b) `O_(2)` is evolved during this reaction, moreover electrons are made avilable to PS-II continuously. |
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| 275. |
Enzyme helping in oxidatvie decarboxylation of pyruvic acid isA. Pyruvic kinaseB. Pyruvate dehydrogenaseC. Malate dehydrogenaseD. Succinic dehydrogenase |
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Answer» Correct Answer - B (B) Enzyme helping in oxidative decarboxylation of pyruvic acid is pyruvic dehydrogenase. |
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| 276. |
Number of ATP molecules which can be built on complete oxidation of pyruvic acid isA. 38B. 30C. 8D. 15 |
| Answer» Correct Answer - D | |
| 277. |
The process of oxidative phosphorylation takes place inA. MitrochondriaB. ChloroplastsC. RibosomesD. Cytoplasm |
| Answer» Correct Answer - A | |
| 278. |
The process of oxidative phosphorylation takes place inA. MitochondriaB. ChloroplastsC. RibosomesD. Cytoplasm |
| Answer» Correct Answer - A | |
| 279. |
Glycolysis is the conversion ofA. Glucose to glycogenB. Glycogen to glucoseC. Glucose to pyruvic andD. Glucose to citric acid |
| Answer» Correct Answer - C | |
| 280. |
RQ (Respiratory Quotient) is defined 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 | |
| 281. |
Respiratory Quotient (RQ) is defined asA. Volume of `O_(2)`/Volume of `CO_(2)`B. Volume of `CO_(2)`/ Volume of `O_(2)`C. Volume of `O_(2)`/ Volume of `N_(2)`D. Volume of `N_(2)`/Volume of `CO_(2)` |
| Answer» Correct Answer - B | |
| 282. |
What are the actual sites of light reaction and dark reaction inside the chloroplasts? |
| Answer» Light reaction occurs in thylakoids and dark occurs in the stroma of chloroplast. | |
| 283. |
Respiration can occur in the absence of oxygen inA. Solanum tuberosumB. SpirogyraC. YeastD. Homo sapiens |
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Answer» Correct Answer - C (C) Respiration can occur in the absence of oxygen in yeast (anaerobic respiration/ fermentation). |
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| 284. |
The most appropriate reason for storing green-colored apples at low temperature isA. The rate of photosynthesis is reduced.B. Respiration and photosynthesis are completelt inhibited.C. The rate of respiration is reduced.D. The rate of photosynthesis and respiration are reduced. |
| Answer» Correct Answer - C | |
| 285. |
in the process of repiration in plants 180 gms of sugar plus 192 gms of oxygen produceA. Large amount of `CO_(2)` , no water and no energyB. 132 gms of `CO_(2)` , 534 gms of water and 337 kcalas of energyC. 264 gms of `CO_(2)`,180 gms fo water and 674 kcals of energyD. 528 gms of `CO_(2) , 216 gms of water and 1348 kcals of energy |
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Answer» Correct Answer - C Reaction of respiration is `C_(6)H_(12)O_(6)+6O_(2)rarr6CO_(2)+6H_(2)O+674`kcal In this reaction considering molecular weight of each elements, we get `C_(6)H_(12)O_(6)=6` time 12+12 time 1+6 times 16=180gm `O_(2)=6` times 32=192gm Now we consider products of this reaction i.e. `6CO_(2)` and `6H_(2)O` `6CO_(2)=6(12+32)=264gm` `6H_(2)O=6(2+16)=108gm` |
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| 286. |
In which of the following , respiration in the absence of oxygen also takes place ?A. ManB. PotatoC. YeastD. Spirogyra |
| Answer» Correct Answer - C | |
| 287. |
Carbon monoxide inhibits mitochondrial electron transport byA. Inhibiting the electron transfer of complexB. Blocking electron transport at the level of the cytochrome-b cytochrome Co-complexC. Binding to the oxygen binding site of cytochrome oxidaseD. Binding to haemoglobin in the erythrocytes and therefore blocking the transport of oxygen to tissues |
| Answer» Correct Answer - C | |
| 288. |
which among the following is the most appropriatae reason for storing green coloured apples at low temperatureA. the rate of photosynthesis is reducedB. respiration and photosynthesis are completely inhibitedC. the rate of respiration is reducedD. the rate of photosynthesis and respiration are reduced |
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Answer» Correct Answer - C At low temperature in green apple, the galaclose sugar consumption reduces in respiration due to which they remain as such fresh for long time. |
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| 289. |
Which is the raw material in cell respiration. |
| Answer» Correct Answer - Glucose. | |
| 290. |
Tick the correct answer: `O_(2)` evolved during photosynthesis is form i) `CO_(2)`, ii) `H_(2)O`. |
| Answer» Correct Answer - ii | |
| 291. |
In presence of cyanide, azide and carbon monoxide, the rate of respiration.A. DecreasesB. IncreasesC. Remains the sameD. None of the above |
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Answer» Correct Answer - A Cyanides, azides and carbon monoxide work as enzyme inhibitions thus the rate of respiration decreases. |
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| 292. |
In plants, respiration takes placeA. During day onlyB. During night onlyC. All 24 hoursD. At dusk |
| Answer» Correct Answer - C | |
| 293. |
Select the correct statement w.r.t RQ.A. Its value is 0.9 for tripalmitinB. Its value is 0.7 for organic acidsC. It depends upon the type of respiratory-substrateD. In floating respiration, RQ is always` gt 1` |
| Answer» Correct Answer - C | |
| 294. |
`alpha`-ketogultaric acid is raw material for the synthesis of :A. CarotenoidsB. PyrimidinesC. Amino acidsD. Alkaloids |
| Answer» Correct Answer - C | |
| 295. |
If volume of `CO_(2)` liberated during respiration is more than the volume of `O_(2)` used, then the respiratory substrate will beA. carbohydrateB. fatC. proteinD. organic acid |
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Answer» Correct Answer - d RQ slightly more than unity is found when organic acids are broken down as respiratiory substrates under aerobic conditions, e.g., for breakdown of oxalic acid, `RQ = (4CO_(2))/(O_(2)) = 4.0` |
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| 296. |
If volume of `CO_(2)` liberated during respiration is more than the volume of `O_(2)` used, then the respiratory substrate will beA. FatB. SucroseC. GlucoseD. Organic acid |
| Answer» Correct Answer - C | |
| 297. |
The ratio of the volume of `CO_(2)` evolved to the volume of `O_(2)` consumed in respiration is calledA. Respiratory ratioB. Respiratory quotientC. Respiratory extinction valueD. Both (1) & (2) |
| Answer» Correct Answer - D | |
| 298. |
Which of the following is cecessary for respiration influence in plantsA. Carbon dioxideB. OxygenC. ChlorophyllD. Light |
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Answer» Correct Answer - B Oxygen is essential for aerobic repiration it is the ultimate acceptor of electrons in electron trasnport system (E.T.S). |
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| 299. |
`CO_(2)` concentration has which relation with respirationA. Directly proportionalB. InverselyC. Both (a) and (b)D. No relation |
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Answer» Correct Answer - B If the amount of `CO_(2)` in the air more than usual rate of respiration is decreased. |
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| 300. |
When an unripe banana is sealed in a polythene bag, it reamins green for many days. But if an apple is also sealed in the same bag. The banana ripens and turns yellow within a few days. The reason is that appleA. Removes `O_(2)` released by the banana and thus promotes ripeningB. Produces `CO_(2)` which prmotes ripeningC. Removes `CO_(2)` which inhibits ripeningD. Releses ethylene whcich promotes ripening |
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Answer» Correct Answer - D In apple, gaseous hormone ethylene is produced which helps in ripening of banana to convert it yellow. |
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