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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.
| 1151. |
First enzyme to be isolated in pure crystalline form wasA. ZymaseB. UreaseC. InvertaseD. Diastase |
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Answer» Correct Answer - B (B) First enzyme to be isolated in pure crystalline form was urease. |
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| 1152. |
Fructose in an example ofA. 3-ketohexoseB. 4-ketohexoseC. 2-ketohexoseD. 1-ketohexose |
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Answer» Correct Answer - C In all the naturally occuring ketoses, keto group is always present at `C` next to the terminal `C`. |
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| 1153. |
Which of the following is an example of aldohexose ?A. FructoseB. SucroseC. GlucoseD. Raffinose |
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Answer» Correct Answer - C |
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| 1154. |
Which of the following in not an aldohexose?A. GlucoseB. MannoseC. GalactoseD. Ribose |
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Answer» Correct Answer - D Ribose is an aldopentose. `D-(+)-` Ribose occurs in plant nucleic acids and in liver and pancreas nucleic acids. |
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| 1155. |
Which of the following in not a polysaccharide?A. CelluloseB. starchC. GumsD. Maltose |
| Answer» Polysaccharides are polymers consisting of more than ten simple sugar units. Maltose is a disaccharide. | |
| 1156. |
Which one of the following is a disaccharide?A. MaltoseB. RiboseC. GlucoseD. Fructose |
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Answer» Correct Answer - A (A) Maltose is a disaccharide. |
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| 1157. |
Which of the following is not a oligosaccharideA. SucroseB. lactoseC. maltoseD. galactose |
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Answer» Correct Answer - D Galactose is monosaccharide while others are disaccharides. |
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| 1158. |
Which of the following is the simplest amino acidA. GlycineB. MethionineC. PhenylalanineD. Asparagine |
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Answer» Correct Answer - A (A) Asparagine is the earliest discovered amino acid. |
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| 1159. |
The number of monosaccharide units formed on hydrolysis of glucose are :(a) zero (b) one (c) two (d) three |
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Answer» Option : (a) zero |
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| 1160. |
What is the name given to that part of the enzyme where catalytic work is carried out ? |
| Answer» Active or catalytic site. | |
| 1161. |
Name the metal ions found in the chloroplasts. Also mention the `O_(2)`-carrying and `O_(2)`-storing pigments. |
| Answer» Fe, Mg and Mn occur in the chloroplasts , haemoglobin carries `O_(2)` and myoglobin stores oxygen. | |
| 1162. |
What is the main role of vitamins. |
| Answer» Vitamins act as coenzymes or parts of coenzymes. | |
| 1163. |
Which is the most abundant component of living matter and why ? |
| Answer» Water, life originated in water and cannot exist without water because of its multiple role in life processes. | |
| 1164. |
Carboxylic acids containing an amino group `(-NH_(2))` as a substituent are called amino acids. When this amino group substitution is at `alpha` position with respect to carboxylic group, the aminoacid is called `alpha`-amino acid. The aminoacids with two carboxylic acids are called acidic amino acids whereas aminoacids with two amino group are called basic amino acids Amino acids show amphoteric character. Ali chiral natural amino acids exist in L-form. : Each of the following represent natural alanine (an amino acid) exceptA. B. C. D. |
| Answer» Correct Answer - D | |
| 1165. |
When either form of D-Glucose is dissolved In water, the solution gradually changes its optical rotation and finally attains a constant optical rotation of `+52^(@)`. Which of the following statements, is true?A. Because of the presence of alcoholic group in D-Glucose it exhibits mutarotationB. Because of the presence of `gt`C = O group in Glucose it exhibits mutarotationC. All sugars exhibit mutarotationD. Because of free hemiacetal linkage in cyclic form, D-Glucose exhibit mutarotation |
| Answer» Correct Answer - D | |
| 1166. |
Which one is an amino acids?A. `CH_(3)-overset(NH_(2))overset(|)(CH)-overset(O)overset(||)(C)-OH`B. `CH_(3)-CH_(2)-overset(O)overset(||)(C)- O-NH_(4)`C. `CH_(3)-CH_(2)-overset(O)overset(||)(C)-NH_(2)`D. `CH_(3)-CH-NH_(2)-overset(O)overset(||)(C)-Cl` |
| Answer» Correct Answer - A | |
| 1167. |
What would be the length of DNA containing 10000 base pairs?A. `68000 Å`B. `34000Å`C. `10000Å`D. Im |
| Answer» Correct Answer - B | |
| 1168. |
Which one of the bio-molecule is insoluble in waterA. keratinB. haemoglobinC. insulinD. globulin |
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Answer» Correct Answer - A |
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| 1169. |
The `alpha`-helical structure of protein is stabilized byA. dipeptide bondB. glycosidic bondC. intramolecular hydrogen bond between-NH and carbonyl oxygenD. Intermolecular hydrogen bond between -NH and carbonyl oxygen |
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Answer» Correct Answer - C |
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| 1170. |
Match the following : A. (i)-(II),(ii)-(III),(iii)-(IV),(iv)-(I)B. (i)-(III),(ii)-(II),(iii)-(IV),(iv)-(I)C. (i)-(II),(ii)-(III),(iii)-(I),(iv)-(IV)D. (i)-(III),(ii)-(II),(iii)-(IV) |
| Answer» Correct Answer - A | |
| 1171. |
Glycoprotein containsA. More than 200 amino acids and carbohydrates as its side chainB. More than 20 amino acids and carbohydrates as its side chainC. More than 200 amino acids and steroids as its side chainD. More than 20 amino acids and steroids as its side chain |
| Answer» Correct Answer - A | |
| 1172. |
The lock and key principle is related toA. Dark reactionB. Enzyme actionC. Chemical actionD. Hormonal action |
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Answer» Correct Answer - B (B) The lock and key principle is related to enzyme action |
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| 1173. |
What are different types of RNA which are found in the cell? |
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Answer» There are three different types of RNA found in the cell. (1) The messenger RNA which carries the message to the ribosome. (2) Ribosomal RNA where synthesis of protein takes place. (3) The transport RNA. |
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| 1174. |
Most abundant enzymes isA. CatalaseB. RubiscoC. NitrogenaseD. Invertase |
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Answer» Correct Answer - B (B) Most abundant enzyme is Rubisco. |
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| 1175. |
Name the four bases present in DNA which of these is not present in RNA. |
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Answer» Purines-adenine (A) and guanine (G); Pyrimidines-thymine (T) and cytosine (C), these four bases are present in DNA. Out of these, thymine (T) is not present in RNA. |
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| 1176. |
Which one of the following is a basic amino acidA. `{:(," "COOH),(," |"),(NH_(2),-C-H),(," | "),(,""CH(CH_(3))_(2)):}`B. `{:(," "COOH),(," |"),(NH_(2),-C-H),(," | "),(,""(CH_(2))_(4)NH_(2)):}`C. `{:(," "COOH),(," |"),(NH_(2),-C-H),(," | "),(,""CH_(2)OH):}`D. `{:(," "COOH),(," |"),(NH_(2),-C-H),(," | "),(,""CH_(3)):}` |
| Answer» Correct Answer - B | |
| 1177. |
Name the amino acids which are synthesized in the body. |
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Answer» The amino acids which are synthesized in the body are called non-essential amino acids. Examples : Glutamic acid, serine. |
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| 1178. |
Find out the wrongly matched pairA. Primary metabolites - RiboseB. Secondary metabolite-AnthocyaninsC. Protein - InsulinD. Cellulose - Heteropolymer |
| Answer» Correct Answer - D | |
| 1179. |
Amino acids not synthesized in the body are calledA. Non-essentialB. DeaminatedC. AminatedD. Essential |
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Answer» Correct Answer - D (D) Amino acid not synthesised in human body is essential. |
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| 1180. |
Find out the wrongly matched pairA. Primary metabolite-RiboseB. Secondary metabolite-AnthocyanineC. Protein-InsulinD. Cellulose-Heteropolymer |
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Answer» Correct Answer - D (D) Primary metabolite-Ribose Secondary metabolite- Anthocyanin Protein-Insulin Cellulose- Homopolymer |
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| 1181. |
Prosthetic group is present inA. simple proteinB. conjugated proteinC. vitaminsD. hormones |
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Answer» Correct Answer - B Proshetic group is present in a conjugated protein. |
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| 1182. |
Which one of the following is not true for enzymesA. They act on a specific substrateB. They are made up of fat and sugarC. They act at a specific temperatureD. They act at a specific pH |
| Answer» Correct Answer - B | |
| 1183. |
Magnesium is present inA. haemoglobinB. chlorophyllC. caseinD. keratin |
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Answer» Correct Answer - B |
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| 1184. |
The pH of the blood does not appreaciably change by small addition of an acid or a base because bloodA. contains serum protein which acts as a bufferB. contains iron as a part of the moleculeC. can be easily coagulatedD. is a body fluid |
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Answer» Correct Answer - A The pH of the blood does not appreciably change by small addition of acid or a base because blood contains serum proteins which acts as a buffer. |
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| 1185. |
Co-enzyme isA. Always a proteinB. Often a vitaminC. Always an inorganic compoundD. Often a metal |
| Answer» Correct Answer - B | |
| 1186. |
Maltose is made up ofA. `alpha`-D-glucoseB. D-fructoseC. `alpha`-D-glucose and `beta`-D-glucoseD. glucose and fructose |
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Answer» Correct Answer - A |
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| 1187. |
Polymers of more than 10000 amino acids are termedA. proteinsB. tripeptideC. dipeptideD. oligopeptide |
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Answer» Correct Answer - A |
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| 1188. |
Iron present in haemoglobin is anA. ferrous stateB. ferric stateC. partly in ferrous and partly in ferricD. elemental state |
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Answer» Correct Answer - A |
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| 1189. |
The enzyme pepsin hydrolysesA. protein to amino acidsB. fats to fatty acidsC. polysaccharides to monosaccharidesD. glucose to ethylalcohol |
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Answer» Correct Answer - A Enzymes are essential biological catalysts which are needed to catalyse biochemical reactions. Enzyme pepsin catalyse the hydrolysis of proteins to amino acid. |
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| 1190. |
Deficiency of vitamin A causesA. Beri beriB. ScurvyC. Night bindnessD. Sterility |
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Answer» Correct Answer - C Night blindness is caued due to deficiency of vitamin A. |
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| 1191. |
Enzyme trypsin convertsA. starch into sugarB. proteins into `alpha`-amino acidsC. glucose into glycogenD. `alpha`- amino acids into proteins |
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Answer» Correct Answer - B Protein `overset"Trypsin"to alpha`-amino acid |
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| 1192. |
The main structural feature of proteins is:A. an ester linkageB. an ether linkageC. the peptide linkageD. All |
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Answer» Correct Answer - C The main structural feature of proteins is the peptide linkage. |
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| 1193. |
Which structural feature distinguishes proline from other natural `alpha-`amino acids?A. It is optically inactive.B. It contains armatic group.C. It is a dicarboxylic acidD. It has a secondary amine. |
| Answer» Correct Answer - D | |
| 1194. |
Fabroin is term related toA. hairB. milkC. hornD. silk |
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Answer» Correct Answer - D |
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| 1195. |
`alpha`-D-galactose and `beta`-D-galactose areA. epimersB. metamersC. anomersD. tautomers |
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Answer» Correct Answer - C |
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| 1196. |
Adenosine is `:`A. nucleosideB. nucleotideC. a purineD. a pyrimdine |
| Answer» Correct Answer - A | |
| 1197. |
Name the polymer which make the exoskeleton of insects. |
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Answer» Chitin a polymer of glucosamine forms the exoskeleton of insects. |
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| 1198. |
Which of following is maltose.A. B. C. D. |
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Answer» Correct Answer - D |
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| 1199. |
The bass adenine occurs inA. DNA onlyB. RNA onlyC. DNA and RNA bothD. Protein |
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Answer» Correct Answer - C Adenine is a purine base which is common in DNA and RNA. |
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| 1200. |
What is the name given to the inactive form of trypsin? |
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Answer» Trypsinogen. |
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