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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.
| 951. |
Most abundant protein in human body isA. collagenB. myosinC. actinD. albumin |
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Answer» Correct Answer - A |
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| 952. |
order of occureence of element in human body isA. O,C,N,HB. O,C,H,NC. Na,Ca,C,OD. K,Ca,C,D |
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Answer» Correct Answer - A |
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| 953. |
The most abundant intracellular cation isA. `K^(+)`B. `Na^(+)`C. `Ca^(++)`D. `H^(+)` |
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Answer» Correct Answer - A |
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| 954. |
Macro molecule chitin is:A. simple polysaccharideB. nitrogen containing polysaccharideC. phosphorus containing polysaccharideD. phosporus containing polysaccharide |
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Answer» Correct Answer - B |
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| 955. |
Macro molecule chitin is:A. Suluphur containing polysaccharideB. simple polysaccdarideC. nitrogen containing polysaccharideD. phosphorus containg polysaccharide |
| Answer» Correct Answer - C | |
| 956. |
Which of the following graphs correctly indicates the reaction in presence (indicated bt +) and absence (indicated as -) of an enzyme ?A. P,Q,R and S represent the same reaction carried out in the presence of enzyme, and low temperature, respectively.B. Q and S represent the same reaction carried out at high and low temperatures, respoectively.C. R and S represent the same reaction carried out in the presence and absence of catlyst, respectively.D. P and R represent the same reaction carried out in the absence and presence of enzyme, respectively. |
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Answer» Correct Answer - D Standard free energy represents the energy available to do work at standard temperature. Activation energy represents the energy required to start a reaction. The enzyme works by lowering down the activation energy. |
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| 957. |
How is a peptide bond formed? |
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Answer» (i) Amino acids condense to form peptide. In this process, the carboxylic group of one amino acid joins with the amino group of another amino acid with a loss of water molecule. (ii) The bond thus formed (-CO-NH-) is called amide or peptide bond. A chain of two amino acid is called dipeptide, that of three is tripeptide and many is polypeptide. |
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| 958. |
Which of the following graphs correctly indicates the reaction in presence (indicated bt +) and absence (indicated as -) of an enzyme ?A. B. C. D. |
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Answer» Correct Answer - D Enzymes are biocatalysts that greatly increase the rate at which the reaction proceeds to form the product. Enzyme activity is influenced by substrate concentration and by temperature and `pH`, which must lie within certain range. Increase in substrate concentration increase the rate of reaction. The enhanced rate is due to two factors: (a) occupation of more and more active sites by the substrate molecules, (b) higher number of collsions between substrate molecules. The rise in velocity is quite high in the beginning but it decreases progressively with the substrate concentration. A stage is reached where velocity is maximum. It does not increase further by increasing the substrate concentration. At this stage the enzyme molecules become fully saturated and no active site is left to bind additional substrate molecules. This saturation effect is shown by all enzymes. |
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| 959. |
Write a short note on chitin. |
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Answer» (i) Chitin is the second most abundant organic compound in nature. (ii) It is a fibrous homopolysaccharide of high tensile strength. (iii) Its basic unit is a nitrogen containing glucose derivative known as N-acetyl glucosamine. (iv) Chitin is soft and leathery, it provides both strength and elasticity. It becomes hard when impregnated with calcium carbonate. |
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| 960. |
Write 4 functions of DNA. |
Answer»
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| 961. |
Why ATP is known as the energy currency of the cell?ORWhy is ATP called as the coin of the energy? |
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Answer» ATP can pick up energy where it is being liberated and supply the same where it is being consumed. Hence, ATP is called energy currency of the cell. |
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| 962. |
What do you understand by denaturation? |
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Answer» Denaturation is the loss of the specific three-dimensional conformation of a protein molecule. The agents of denaturation are heat or radiation, strong acids and alkalies, high concentration of salts, organic solvents etc. |
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| 963. |
Write two main functions of carbohydrates in plates. |
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Answer» Correct Answer - (i) Structural material for plant cell walls. The polysaccharide cellulose acts as the chief structural material of the plant cell walls. (ii) Reserve food material. The polysaccharde starach is the major reserve food material in the plants. It is stored in seeds and acts as the reserve food material for the tiny plant till is capable of making its own food by photosynthesis. |
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| 964. |
List the nucleotides of DNA |
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Answer» d AMP (deoxy adenylic acid) d GMP (deoxy guanylic acid) d CMP (deoxy cytidylic acid) d TMP (deoxy thymidylic acid) |
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| 965. |
What are the functions of nucleotides? |
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Answer» (i) They are building blocks of nucleic adds, ribonucleotides for RNAs while deoxyrbonucleotides produce DNA. (ii) Cyclic AMP functions as second chemical messenger in many hormones controlled chemical reactions. (iii) Cyclic GMP is function in Ca++ or calmodulin mediated chemical reaction. (iv) CoA is produced by reaction between nucleotide and pantothenic acid. |
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| 966. |
List three functions of nucleotides in a cell. |
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Answer» i. Nucleotides are the building blocks of high molecular weight polymers (poly-nucleotides) called nucleic acids. ii. Some of them act as energy carriers. iii. In the sequence of three, they code for one amino acid in nucleic acids. Thus, some of them are carriers of hereditary information, i.e., genetic code. iv. Some of them are co-enzymes. |
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| 967. |
Write two functions of carbohydrates in plants. |
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Answer» (i). They form structural component of cells. For example, cellulose is present in the cell walls of all the plant cells. (ii) They function as biofuels to provide energy for the functioning of living system and doing work. |
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| 968. |
What type of bonding occurs in globular protein? |
| Answer» Globular protein may have the following type of bonding: hydrogen bonding, disulphide bridges, ionic or salt bridge, and hydrophobic interactions. | |
| 969. |
What will be the sequence of bases on `mRNA` molecule synthesised on the `DNA` strand, `TATCTAC TGGA`? |
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Answer» Sequence of bases on `mRNA` molecule: `{:(DNA " strand",TAT,CTA,C CT,GGA),(m-RNA,AUA,GAU,GGA,C CU):}` |
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| 970. |
What is the distance between two successive bases in a strand of DNA? |
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Answer» 3.4 A0 is the distance between two successive bases in a strand of DNA |
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| 971. |
How many base pairs are present in one turn of the helix of a DNA strand? |
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Answer» 10 base pairs. |
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| 972. |
Which of the following statement is not correct ?A. Starch is a polymer of `alpha`-glucoseB. Starch is made up of amylose and amylopectin.C. Amylose is a linear structure consisting of several glucose residues joined by 1, 4-glycosidic linkages.D. Amylopectin is a straight chain with several glucose residues joined by 1, 4-glycosidic linkages. |
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Answer» Correct Answer - D (D) Starch is apolymer of `alpha`-glucose. Starch is made up of amylose and amylopectin. Amylose is a linear structure consisting of several glucose resideuse joined by 1,4-glycosidic linkages Amylocpectin is a branched chain with several glucose residues joined by 1,4-glycosidic linkages and at branching is by 1,6-glycosidic linkages. |
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| 973. |
Which one of the following pair is the reducing sugar?A. Sucrose and maltoseB. Maltose and lactoseC. Lactose and sucroseD. Sucrose and glucose |
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Answer» Correct Answer - B In maltose, free aldehyde group can be produced at C-1 of second glucose in solution and It shows reducing properties so it is a reducing sugar. Lactose is composed of `beta`-D-galactose and `beta`-D-glucose. The linkage is between C-1 of galactose and C-4 of glucose. Hence, it is also a reducing sugar. |
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| 974. |
Cheilosis and digestive disorders are due to the deficiency ofA. thiamineB. ascorbic acidC. riboflavinD. pyridoxine |
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Answer» Correct Answer - C Cheilosis (cracking or fissuring at corners of mouth and lips), digestive disorders and burning sensation of skin are deficiency diseases, caused by the deficiency of vitamin `B_2` (riboflavin). |
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| 975. |
Alcoholic fermentation is due toA. ZymaseB. UreaseC. InvertaseD. Diastase |
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Answer» Correct Answer - A (A) First enzyme to be isolated in pure crystalline form was urease. |
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| 976. |
In bryophytes and and pteridophytes, transport of male gametes requiresA. WindB. InsectC. BirdsD. Water |
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Answer» Correct Answer - D (D) In bryophytes ad pteridophytes, transport of male gametes require water. |
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| 977. |
Microtubules are the constituents ofA. Spindle fibres, Centrioles and CiliaB. Centrioles, spindle fibres and chromatinC. Centrosome, Nucleosome and CentriolesD. Cilia, Flagella and Peroxisomes |
| Answer» Correct Answer - A | |
| 978. |
Which one of the following statements is wrong ?A. Glycine is a sulphur containing amino acidB. Sucrose is a disaccharideC. Cellulose is a polysachharideD. Uracil is a pyrimidine |
| Answer» Correct Answer - A | |
| 979. |
A typical fat molecule is made-up ofA. One glycerol and three fatty acid moleculesB. One glycerol and one fatty acid moleculeC. Three glycerol and three fatty acid moleculesD. Three glycerol molecules and one fatty acid molecule |
| Answer» Correct Answer - A | |
| 980. |
A typical fat molecule is made up ofA. Three glycerol and three fatty acid moleculesB. Three glycerol molecules and one fatty acid moleculeC. One glycerol and three fatty acid moelculesD. One glycerol and one fatty acid molecule |
| Answer» Correct Answer - C | |
| 981. |
A triglyceride molecule has or A typical fat molecule is made up ofA. Three glycerol molecules and one fatty acid moleculesB. One glycerol and three fatty acid moleculesC. One glycerol and one fatty acid moleculeD. Three glycerol and three fatty acid molecules |
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Answer» Correct Answer - B (B) A typical fat molecule is made up of one glycerol and three fatty acid molecules. |
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| 982. |
A typical fat molecule is made up ofA. One glycerol and three fatty acid moleculesB. One glycerol and one fatty acid moleculeC. Three glycerol and the three fatty acid moleculesD. Three glycerol molecules and one fatty acid molecule |
| Answer» Correct Answer - A | |
| 983. |
Beri-beri is caused due toA. vit-AB. vit-CC. vit-BD. vit-D |
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Answer» Correct Answer - C |
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| 984. |
Which of the following is provitamin -AA. citric acidB. riboflavinC. `beta`-caroteneD. calciferol |
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Answer» Correct Answer - C |
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| 985. |
Vitamin-DisA. TocopherolsB. ergosterolC. tocopherolsD. calciferol |
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Answer» Correct Answer - D |
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| 986. |
Hormones that help in the conversion of glucose to glycogen.isA. cortisoneB. adrenalineC. bile acidD. insulin |
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Answer» Correct Answer - D |
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| 987. |
Insulin regulate the metabolism ofA. mineralsB. amino acidsC. glucoseD. vitamins |
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Answer» Correct Answer - C |
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| 988. |
the formation of protein can be considered asA. Dehydration sythesisB. Dehydration analysisC. hydration synthesisD. Hydration analysis |
| Answer» Correct Answer - A | |
| 989. |
starving person will first useA. fatsB. GlycogenC. BloodD. Muscle protein |
| Answer» Correct Answer - B | |
| 990. |
List the important properties of enzymes. |
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Answer» a. Proteinaceous Nature b. Three-Dimensional conformation c. Catalytic property d. Specificity of action e. Temperature |
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| 991. |
Which enzyme is needed to digest food reserve in castor seed? (A) Amylase (B) Diastase (C) Lipase (D) Protease |
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Answer» C this is your answer Lipase is needed to digest food reserve in castor seed. options (c) Lipase the correct answer
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| 992. |
Deficiency of vitamin`B_(1)` causes the disease `:`A. beri-beriB. cheilosisC. sterilityD. convulsions |
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Answer» Correct Answer - A Deficiency of vitamin `B_(1)` causes the disease known as Beri-Beri |
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| 993. |
Deficiency of vitamin`B_(1)` causes the disease `:`A. CheilosisB. SterilityC. ConvulsionosD. Beri`-` Beri |
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Answer» Correct Answer - D Disease beri`-` beri is caused by deficiency of vitamin `B_(1)`. |
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| 994. |
Hydrolysis of sucrose is calledA. saponificationB. inversionC. esterificationD. hydration |
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Answer» Correct Answer - B |
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| 995. |
Cane sugar is converted into a mixture of glucose and fructose byA. aq.KOHB. `H_3PO_4`C. alc.NaOHD. dil.HCl |
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Answer» Correct Answer - D |
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| 996. |
A carbohydrate which cannto be hydrolysed to simpler compounds, is calledA. PolysaccharidesB. trisaccharidesC. disaccharidesD. monosaccharides |
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Answer» Correct Answer - D |
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| 997. |
Gum isA. disaccharideB. monosaccharideC. polysaccharideD. trisaccharide |
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Answer» Correct Answer - C |
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| 998. |
Explain what is meant by 1. a peptide linkage 2. a glycosidic linkage |
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Answer» 1. Peptide linkage: Polymers of x – amino acids are connected to each other by peptide bond or peptide linkage. Chemically peptide linkage is an amide formed between – COOH group and NH2 group. 2. Glycosidic linkage: The two monosaccharide units are joined together by an oxide linkage formed by the loss of a water molecule. Such a linkage between two mono saecharide units through oxygen atom is called glycosidic linkage. |
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| 999. |
Recognise the figure and find out the correct matching. A. A- Primary structure, B-Secondary structureB. A-Secondary structure, B- Primary structureC. A-Secondary structure, B- Tetiary structureD. A-Tertiary structure, B-Quaternary structure |
| Answer» Correct Answer - C | |
| 1000. |
Adult human haemolgobin consists ofA. 2 subunits `(alpha, alpha)`B. 2 subunits `(beta, beta)`C. 4 subunits `(2alpha, 2 beta)`D. 3 subunits `(2 alpha, 1beta)` |
| Answer» Correct Answer - C | |