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Q. No.Prosthetic groups are distinguished from other cofactors in that they:
I: are organic compounds.
II: are tightly bound to the apoenzyme.
1. Only I is true
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
Subtopic: Enzyme Cofactors |
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GLUT-4, that enables glucose transport into the cells, is a:
1. protein
2. amino acid
3. lipid
4. ribonucleoprotein
1. protein
2. amino acid
3. lipid
4. ribonucleoprotein
Subtopic: Proteins |
90%
From NCERT
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The number of correct statement(s) from the given statements is/are:
1. 2
2. 3
3. 4
4. 5
| I: | Almost all enzymes are proteins. |
| II: | Some nucleic acids can behave like enzymes. |
| III: | No enzyme in living organisms can function above 40 °C. |
| IV: | Enzymes are the reason that chemicals react with each other. |
| V: | Enzymes are not sensitive to pH in their environment. |
2. 3
3. 4
4. 5
Subtopic: Enzymes | Enzyme Catalysis | Factors Affecting Enzyme Catalysis Reaction |
From NCERT
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Consider the two statements:
1. Statement I is correct; Statement II is incorrect
2. Statement I is incorrect; Statement II is correct
3. Statement I is correct; Statement II is correct
4. Statement I is incorrect; Statement II is incorrect
| Statement I: | Palmitic acid has 16 carbons including carboxyl carbon. |
| Statement II: | Arachidonic acid has 20 carbon atoms including the carboxyl carbon. |
2. Statement I is incorrect; Statement II is correct
3. Statement I is correct; Statement II is correct
4. Statement I is incorrect; Statement II is incorrect
Subtopic: Lipids |
92%
From NCERT
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If we represent the chemical composition of living tissue from abundance point of view and arrange them class-wise, the second most abundant chemical in living organisms is:
1. Water
2. Protein
3. Carbohydrate
4. Nucleic acid
1. Water
2. Protein
3. Carbohydrate
4. Nucleic acid
Subtopic: Element Analysis |
77%
From NCERT
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Match each item in Column I with one in Column II and select the correct match from the codes given:
Codes:
| Column I | Column II | ||
| A. | Lyases | P. | catalyse removal of groups from substrates by mechanisms other than hydrolysis, leaving double bonds |
| B. | Ligases | Q. | catalyse the linking together of 2 compounds |
| C. | Transferases | R. | catalyse the transfer of a group other than hydrogen between a pair of substrates |
| D. | Isomerases | S. | catalyse inter-conversion of optical, geometric or positional isomers |
Codes:
| A | B | C | D | |
| 1. | P | Q | R | S |
| 2. | Q | P | R | S |
| 3. | P | Q | S | R |
| 4. | R | R | Q | S |
Subtopic: Enzymes Classification |
90%
From NCERT
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Coenzymes nicotinamide adenine dinucleotide (NAD) and NADP contain the vitamin:
| 1. | Riboflavin | 2. | Pantothenic acid |
| 3. | Niacin | 4. | Pteroylglutamic acid |
Subtopic: Enzyme Cofactors |
92%
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The number of correct statement(s) from the statements given below is/are:
1. 1
2. 2
3. 3
4. 4
| I: | Cellulose is a polymeric polysaccharide consisting of only one type of monosaccharide. |
| II: | Starch is a homopolymer. |
| III: | Inulin is a polymer of fructose. |
| IV: | In glycogen, the right end is called the reducing end, and the left end is called the non-reducing end. |
2. 2
3. 3
4. 4
Subtopic: Carbohydrates: Starch & Glycogen | Carbohydrates: Cellulose, Chitin, Inulin & Agar |
77%
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If the R group in a proteinaceous amino acid is called hydroxy methyl, the amino acid must be:
1. phenylalanine
2. serine
3. alanine
4. tyrosine
1. phenylalanine
2. serine
3. alanine
4. tyrosine
Subtopic: Different Amino Acids |
91%
From NCERT
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Identify the incorrect statement:
| 1. | Lipids are generally water insoluble. |
| 2. | Fatty acids could be saturated (without double bond) or unsaturated (with one or more C=C double bonds). |
| 3. | Glycerol is trihydroxy propane. |
| 4. | No lipids have both glycerol and fatty acids. |
Subtopic: Lipids: Fatty Acids |
94%
From NCERT
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