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Q. No.The skeletal formula (showing numbering convention for substituent groups) of a simple aromatic ring shown below will be a part of the structure of all the following except:
1.
Thymine
2.
Cytosine
3.
Uracil
4.
Adenine
Subtopic: Nucleic Acid: Nucleotides |
58%
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State whether the given statements are true or false:
| Statement I: | Palmitic acid has 16 carbons including carboxyl carbon. |
| Statement II: | Arachidonic acid has 20 carbon atoms including the carboxyl carbon. |
| Statement III: | Adenosine, guanosine, thymidine, uridine and cytidine are nucleosides. |
| Statement IV: | Nucleic acids like DNA and RNA consist of nucleotides only. |
| Statement I | Statement II | Statement III | Statement IV | |
| 1. | T | T | T | T |
| 2. | T | T | F | F |
| 3. | F | F | T | T |
| 4. | F | F | F | F |
Subtopic: Nucleic Acid: Nucleotides | Lipids: Glycerolipids, Phospholipids & Glycerol |
80%
From NCERT
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All the following are aromatic amino acids except:
| 1. | tyrosine | 2. | phenylalanine |
| 3. | tryptophan | 4. | threonine |
Subtopic: Amino Acids |
85%
From NCERT
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Which of the secondary metabolites is an important anti-cancer drug?
| 1. | Ricin | 2. | Abrin |
| 3. | Vincristine | 4. | Atropine |
Subtopic: Primary & Secondary Metabolites |
71%
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Which element makes up the maximum % weight of the human body?
| 1. | carbon | 2. | hydrogen |
| 3. | nitrogen | 4. | oxygen |
Subtopic: Introduction |
66%
From NCERT
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Which of the following components of the acid insoluble fraction of a cell is not a macromolecule?
| 1. | proteins | 2. | nucleic acids |
| 3. | polysaccharides | 4. | lipids |
Subtopic: Element Analysis |
88%
From NCERT
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Subtopic: Zwitter ion & Peptide Bond |
91%
From NCERT
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Identify the amino acid (shown in the molecule given below):
| 1. | Glycine | 2. | Serine |
| 3. | Alanine | 4. | Methionine |
Subtopic: Nucleic Acid: Nucleotides |
83%
From NCERT
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Subtopic: Nucleic Acid: Nucleotides |
76%
From NCERT
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If we represent the chemical composition of living tissue from abundance point of view, the most abundant chemical in living organisms is:
| 1. | Water | 2. | Carbohydrates |
| 3. | Proteins | 4. | Lipids |
Subtopic: Element Analysis |
86%
From NCERT
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