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Indian Navy SSR Biomolecules — practice questions

Explore 2 free Biomolecules questions in Indian Navy SSR Chemistry. Open each question or exercise to read its content, reference answers and available explanation.

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Biomolecules questions and exercises with answers

Showing questions 1–2 of 2.

Nucleic acids are composed of nucleotides, each containing:Read the answer and worked solution →Glucose in open-chain form has a:Read the answer and worked solution →

Worked practice questions

Nucleic acids are composed of nucleotides, each containing:

  1. Sugar + phosphate + nitrogenous base
  2. Just phosphate
  3. Sugar + base
  4. Amino acid
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Correct answer: A. Sugar + phosphate + nitrogenous base

Nucleotide = pentose sugar (ribose/deoxyribose) + nitrogenous base (A, T/U, G, C) + phosphate group. Polymer of nucleotides → DNA or RNA via phosphodiester linkages.

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Glucose in open-chain form has a:

  1. Ketone group at C-2, like fructose has in the same molecule
  2. Aldehyde group at C-1, with four chiral carbons in the chain
  3. Carboxylic acid group at C-1, with five hydroxyl groups
  4. Ester group at C-6, with a cyclic structure in solid form
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Correct answer: B. Aldehyde group at C-1, with four chiral carbons in the chain

Glucose open chain: aldehyde at C-1 and -OH at C-2 to C-5 with -CH$_2$OH at C-6; four chiral C.

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More Chemistry topics

Organic ChemistryAlkenesAlcohols Phenols EthersPolymersChemical Equilibriump-Block ElementsThe p-Block ElementsAtoms and Molecules