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.
| 2351. |
Which of the following are lipids ?A. only oilB. only fatsqC. Oils and fatsD. Sugar |
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Answer» Correct Answer - C |
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| 2352. |
Which of the following carbohydrates is a disaccharide?A. RaffinoseB. GlucoseC. maltoseD. Fructose |
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Answer» Correct Answer - C |
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| 2353. |
Which of the following carbohydrates is not a disaccharideA. MaltoseB. LactoseC. SucroseD. Galactose |
| Answer» Correct Answer - D | |
| 2354. |
Biomolecules areA. aldehydes and ketonesB. acids and estersC. carbohydrates, proteins and fatsD. alcohols and phenols |
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Answer» Correct Answer - C |
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| 2355. |
A glycogen isA. a polysaccharide found in animalsB. a polysaccharide found in plantsC. a polysaccharide found in fruitsD. an enzyme |
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Answer» Correct Answer - A |
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| 2356. |
Fibrous protein are present inA. woolB. haemoglobinC. albuminD. hyroglobulin |
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Answer» Correct Answer - A |
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| 2357. |
Glycerides areA. esters of fatty acids and glycolB. esters of fatty acids and glycerolC. esters of fatty acids and sorbitolD. esters of fatty acids and glucose |
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Answer» Correct Answer - B |
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| 2358. |
Which of the following compound does not belongs to liquids ?A. FatsB. EthanolC. Ethanoic acidD. Oils |
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Answer» Correct Answer - A |
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| 2359. |
Gluconic acid is prepared byA. oxidation of sucrose with bromine waterB. reduction of sucrose with sodiumC. reduction of glucose with sodium amalgam and waterD. oxidation of glucose by conc. `HNO_3`. |
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Answer» Correct Answer - A |
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| 2360. |
Thyroglobin is an example ofA. scleroproteinsB. structural proteinsC. fibrous proteinsD. globular proteins |
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Answer» Correct Answer - D |
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| 2361. |
Amylose is a polymer ofA. `alpha`-D glucopyranoseB. fructoseC. `beta`-fructoseD. `beta`-D glucose |
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Answer» Correct Answer - A Amylose is a polymer of `alpha-D` glycopyranose. |
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| 2362. |
The total number of C atoms in `beta-`D fructo-furanose areA. 6B. 5C. 4D. 7 |
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Answer» Correct Answer - A total number of C-atoms in `beta-`D-fructofuranose are 6. |
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| 2363. |
The role of an enzyme in a reaction is to/asA. Decrease activation energyB. Increase activation energyC. Inorganic catalystD. None of these |
| Answer» Correct Answer - A | |
| 2364. |
A sedoheptulose molecule has_______carbon atomsA. 3B. 4C. 6D. 7 |
| Answer» Correct Answer - D | |
| 2365. |
correct order of abundance of oxygen suphur magnesium and calcium in the earth crust?A. `ogtcagtmggts`B. `SgtOmggtCa`C. `CagtOgtSgtmg`D. `mggtCagtSgtO` |
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Answer» Correct Answer - A |
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| 2366. |
Essential oils are those whichA. are essential to the plant itselfB. are used as lubricantsC. produce perfumesD. are essential for human beings |
| Answer» Correct Answer - A | |
| 2367. |
Assertion: All enzymes found in cells are invariably proteins which catalyse biological reactions. Reason : Enzymes act efficiently at a moderate temperature and pH.A. If both assertion and reason are true and reason is the correct explanation of assertion.B. If both assertion and reason are true but reason is not the correct explanation of assertion.C. If assertion is true but reason is false.D. If both assertion and reason are false. |
| Answer» Correct Answer - B | |
| 2368. |
The diagram illustrates energy changes in an enzyme controlled reaction. A. XB. YC. ZD. Z-Y |
| Answer» Correct Answer - D | |
| 2369. |
Which enzyme helps in transfer of phosphate group from ATP to a carbohydrateA. PhosphataseB. ATPaseC. PhosphorylaseD. Catalase |
| Answer» Correct Answer - C | |
| 2370. |
On the basis of which evidences D-glucose was assigned the given structure ? |
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Answer» This represnts the open structure for D-glucose. `{:(" CHO"),(" |"),((CHOH)_(4)),(" |"),(" C"H_(2)OH):}` |
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| 2371. |
In the following questions a statement of assertion followed by a statement of reason is given. Choose the correct answer out of the following choices. (i) Assertion and reason both are correct statements and reason explains the assertion. (ii) Both assertion and reason are wrong statements. (iii) Assertion is correct statement and reason is wrong statement. (iv) Assertion is wrong statement and reason is correct statement. (v) Assertion and reason both are correct statements but reason does not explain assertion.Assertion : Glycine must be taken through diet.Reason : It is an essential amino acid. |
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Answer» (ii) Both assertion and reason are wrong statements. |
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| 2372. |
In the following questions a statement of assertion followed by a statement of reason is given. Choose the correct answer out of the following choices. (i) Assertion and reason both are correct statements and reason explains the assertion. (ii) Both assertion and reason are wrong statements. (iii) Assertion is correct statement and reason is wrong statement. (iv) Assertion is wrong statement and reason is correct statement. (v) Assertion and reason both are correct statements but reason does not explain assertion.Assertion : In presence of enzyme, substrate molecule can be attacked by the reagent effectively.Reason : Active sites of enzymes hold the substrate molecule in a suitable position. |
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Answer» (i) Assertion and reason both are correct statements and reason explains the assertion. |
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| 2373. |
Carbohydrates are essential for life in both plants and animals. Name the carbohydrates that are used as storage molecules in plants and animals, also name the carbohydrate which is present in wood or in the fibre of cotton cloth. |
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Answer» Carbohydrate used as storage molecule in plants is starch and in animals, it is glycogen. Cellulose is present in wood or in the fibre of cotton cloth. |
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| 2374. |
How will you distinguish `1^(@)` and `2^(@)` hydroxyl groups present in glucose? Explain the reactions. |
| Answer» Glucose forms a pentacetyl derivative on reaction with acetic anhydribe. This shows the presence of five -OH groups in its molecule. With a strong oxidising agent like conc. `HNO_(3)`, glucose is oxidised to a dicarboxylic acid saccharic acid with six carbon atoms. This shows that its molecule has a primary alcoholic group. We may conclude that it has one primary alcoholic group and four secondary alcoholic group in its molecule. | |
| 2375. |
Name the RNA having the shape of a clover leaf. Mention its various regions. |
| Answer» Transfer RNA (tRNA) , carrier end for binding of amino acid, recognition end having an anticodon, enzyme site and ribosome site. | |
| 2376. |
The sugar unit present in the nucleotides of `RNA` isA. D-xyloseB. D-riboseC. L-riboseD. D-glucose |
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Answer» Correct Answer - B (B) In a RNA molecule the sugar compoent is D-ribose. |
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| 2377. |
The sugar unit present in the nucleotides of `RNA` isA. L- riboseB. L- ribuloseC. D- riboseD. L-ribose |
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Answer» Correct Answer - C The sugar is `D-` ribose in the group of nucleic acids known as ribonucleic acis `(RNA)`, and `D -2` dexoyribose in the group known as dexyribonucleic acids `(DNA)`. The profix 2- dexoy simply indicates the lack of an `-OH` group at the 2-position. The sugar units are in the furanose form, and are joined to phosphate through the `C - 3` and `C - 5` hydroxyl groups. Thus, the ribose sugar that takes part in the formation of `RNA` is actually `beta -D` ribofuranose while the sugar unit present in is actually `beta -D` ribofuranose while the sugar unit present in a `DNA` molecule is actully 2 - deoxy - `alpha-D`- ribofuranose. |
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| 2378. |
What are the components of a nucleotide ? |
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Answer» (i) Nitrogenous bases (ii) A monosaccharide (Pentose sugar) (iii) A phosphoric acid |
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| 2379. |
Within a nucleotide,the sequence in which its three components are arranged, isA. phosphate-base-sugarB. base-sugar-phosphateC. sugar-base-phosphateD. base-phosphate-sugar |
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Answer» Correct Answer - B In nucleic acid, the three components - base, sugar and phosphate - are arranged in the sequence `-overset("base")overset(|)("Sugar")-O-underset(-O)underset(|)overset(O)overset(||)(P)-O-` |
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| 2380. |
Which one is true for ATPA. ATP is prosthetic part of an enzymeB. ATP is an enzymeC. ATP is organic ions of enzymeD. ATP is a coenzyme |
| Answer» Correct Answer - D | |
| 2381. |
After watching a programme on TV about the presence of carcinogens Potassium bromide and Potassium iodate in bread and other bakery products, Rupali a class XII student decided to make others aware about the adverse effects of these carcinogens in foods. She consulted the school principal and requested him to instruct the canteen contractor to stop selling sandwiches, pizzas, burgers and others bakery products to the students. The principal took an immediate action and instructed the canteen contructor to replace the bakery products with some protein and vitamin rich food like fruits , salads, sprouts, ect. The decision was welcomed by the parents and the students. After reading the above passage , answer the following questions: (a) What are the values (at least two ) displayed by Rupali? (b) Which polysaccharid component of carbohydrates is commonly present in bread? (c) Write the two types of secondary structures of proteins. (d) Give two examples of water soluble vitamins. |
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Answer» (a) Concern for health of other students, caring, socially alert. (b) Starch (c) α- helix and β- pleated sheet structures (d) Vitamin B1, B2, B6, And C (any two) |
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| 2382. |
`alpha`-helix is stabilized by H-bonds between theA. Nh and CO group of side chainB. NH and CO group of main chainC. NH and NH group of same chainD. NH and COOH group of all chain |
| Answer» Correct Answer - B | |
| 2383. |
Relationship between amino acid and protein is similar to one found betweenA. glucose and fructoseB. nucleotides and nucleic acidC. nucleosides and nucleic acidD. purines and pyrimidines |
| Answer» Correct Answer - B | |
| 2384. |
`CH_(3)(CH_(2))_(14)COOH` is chemical formula ofA. Palmitic acidB. Stearic acidC. GlycerolD. Galactose |
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Answer» Correct Answer - A (A) `CH_(3)(CH_(2))_(14)COOH` is chemical formula of palmitic acid ( total 16 carbon -`C_(6)H_(32)O_(2)`). |
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| 2385. |
Which is present in very little quantity in the body ?A. KB. CaC. MgD. Cu |
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Answer» Correct Answer - D (D) Cu is present in very little quantity in the body. |
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| 2386. |
Select the incorrect statement.A. Collagen is the most abundant protein in the whole of biosphere and RuBisCo is the most abundant protein in animal world.B. Protein are heteropolymers made of amino acids.C. Ribozymes are nucleic acids with catalytic power.D. Protein, nucleic acids and polysaccharides are the only three types of macromolecules founds in living system. |
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Answer» Correct Answer - A (A) RbBisCo is the most abundant protein in the whole of biosphere and collagen is the most abundant protein in animal world. Protein are heteropolymer made of amino acids. Ribozymes are nucleic acids with catalytic power. Protein, nucleic acids and polysaccharides are the only three types of macromolecules found in living system. |
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| 2387. |
Which one is an amino acidA. ReninB. PepsinC. CysteineD. All of the above |
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Answer» Correct Answer - C (C) Proline and Cystein are amino acids |
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| 2388. |
Which of the following are not polymericA. ProteinsB. PolysaccharidesC. LipidsD. Nucleic acids |
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Answer» Correct Answer - C (C) Protein, Polysaccharides and Nucleic acids are polymeric. |
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| 2389. |
Cellulose isA. HeptopolysaccharideB. Heptopolysaccharide , branchedC. Heteroplysaccharide , unbranchedD. pentosan polysaccharide , branched |
| Answer» Correct Answer - C | |
| 2390. |
Thermolabile protein part of enzyme isA. ApoenzymeB. ProenzymeC. HoloenzymeD. Isoenzyme |
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Answer» Correct Answer - A (A) Thermolabile protein part of enzyme is apoenzyme. |
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| 2391. |
which of the following is the most essential fatty acid ?A. LinoleicB. LinolenicC. ArachidonicD. Steric acid |
| Answer» Correct Answer - A | |
| 2392. |
the sweetest amongst all naturally occurring sugars isA. GlucoseB. FructoseC. MannoseD. Galactose |
| Answer» Correct Answer - B | |
| 2393. |
Which one of the following is wrongly matched ?A. fungi - chitinB. phospholipid - plasma membraneC. enzyme - lipolysaccharideD. ATP - nucleotide derivative |
| Answer» Correct Answer - C | |
| 2394. |
Name the oily material secreted by oil glands of mammalia skin. |
| Answer» Correct Answer - sebum. | |
| 2395. |
Assertion : Desmolysing enzymes are those which catalyse the reactions by hydrolysis. Reason : Digestive enzymes are hydrolysing in nature.A. If both the asseration and the reason are true and the reason is a correct explanation of the assertionB. If both the assertion and rreason are true but the reason not a correct explanation of the assertionC. If the assertion is true but the reason is falseD. If the assertion is false but reason is true |
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Answer» Correct Answer - D (d) Desmolysing enzymes are those which catalyse reactions by the other methods other than hydrolysis e.g., aldolases, dehydrogenases, oxidases, etc. Digestive enzymes function by catalysing hydrolysis. Larger molecules are broken into smaller ones. They are grouped into three types - proteolytic (breaks protein molecule), amylolytic (breaks sugar molecule) and lipolytic (breaks lipid molecule). |
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| 2396. |
How do living organisms derive their energy ? How do they store this energy and in what form? How do they convert this energy into work ? We study and understand all this under a sub-discipline calledA. BiofortificationB. BiomagnificationC. BioinformaticsD. Bioenergetics |
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Answer» Correct Answer - D (D) We study and understand all this under a sub-discipline called bioenegetics. |
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| 2397. |
Removal of `CO_(2)` from amino acids make an amino acid intoA. Carboxylic acidB. AmineC. CarbylamineD. Bioenergetics |
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Answer» Correct Answer - B (B) Removal of `CO_(2)~ from amino acids make an amino acid into amine. |
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| 2398. |
Assertion : All enzymes are not proteins. Reason : RNA molecules that possess catalytic activity are called ribozymes. |
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Answer» Correct Answer - A Almost all enzyme are proteins. They may have additional inorganic or organic substances for their activity. There are some RNA molecules that behave like enzymes. These are called ribozymes. |
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| 2399. |
Enzymes are made up ofA. edible proteinsB. proteins with specific structureC. nitrogen containing carbohydratesD. carbohydrates |
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Answer» Correct Answer - B Enzymes are made up proteins with specific structure. |
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| 2400. |
The number of amino acids found in proteins that a human body can synthesize isA. 20B. 10C. 5D. 14 |
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Answer» Correct Answer - B Out of the 20 amino acids needed for a human body only 10 can be synthesized in the body. |
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