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Q. No.Consider the two statements:
Statement I:
Palmitic acid has 16 carbons including carboxyl carbon.
Statement II:
Arachidonic acid has 20 carbon atoms including the carboxyl carbon.
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
Subtopic: Lipids |
93%
Level 1: 80%+
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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 |
79%
Level 2: 60%+
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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%
Level 1: 80%+
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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%
Level 1: 80%+
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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 |
76%
Level 2: 60%+
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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 |
85%
Level 1: 80%+
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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 |
92%
Level 1: 80%+
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All the following will be secondary metabolites synthesised by living organisms, except:
1. flavonoids
2. antibiotics
3. starch
4. gums
1. flavonoids
2. antibiotics
3. starch
4. gums
Subtopic: Primary & Secondary Metabolites |
73%
Level 2: 60%+
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The molecules in the acid insoluble fraction of a cell:
| 1. | have molecular weights ranging from 18 to around 800 daltons (Da) approximately. |
| 2. | include lipids. |
| 3. | are all polymeric substances. |
| 4. | correspond to the cytoplasm of a typical cell. |
Subtopic: Element Analysis |
72%
Level 2: 60%+
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Subtopic: Introduction to Proteins | Zwitter ion & Peptide Bond | Structural Organisation of Proteins |
75%
Level 2: 60%+
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