Most common element present in human body is:

1. Oxygen 2. Carbon
3. Hydrogen 4. Sulfur
Subtopic:  Element Analysis |
 69%
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The molecule shown in the given figure:

1. is a substituted purine found in DNA
2. is a substituted purine found in RNA
3. is a substituted pyrimidine found in DNA
4. is a substituted pyrimidine found in RNA
Subtopic:  Element Analysis |
 75%
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What are thymidine, uridine, and cytidine? 
1. Purines
2. Pyrimidines 
3. Nucleosides 
4. Nucleotides 
Subtopic:  Element Analysis | Nucleic Acid: Nucleotides |
 62%
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The true macromolecular fraction of any living tissue or cell includes all the following except:
1. polynucleotides
2. lipids
3. polysaccharides
4. polypeptides
Subtopic:  Element Analysis |
 88%
From NCERT
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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%
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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
Subtopic:  Element Analysis |
 78%
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Consider the given two statements:

I: Lipids come under acid insoluble fraction.
II: Lipids are macromolecules.

1. Both I and II are correct and II explains I
2. Both I and II are correct but II does not explain I
3. I is correct but II is incorrect
4. I is incorrect but II is correct
Subtopic:  Element Analysis |
 61%
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