A nucleoside on hydrolysis gives from Chemistry Biomolecules

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 Multiple Choice QuestionsMultiple Choice Questions

421.

The tripeptide hormone present in most living cells is

  • glutathione

  • glutamine

  • oxytocin

  • ptyalin


422.

Energy is stored in our body in the form of

  • ATP

  • ADP

  • Fats

  • Carbohydrates


423.

Pick out the one which does not belong to the family

  • pepsin

  • Cellulose

  • Ptyalin

  • Lipase


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424.

A nucleoside on hydrolysis gives

  • a heterocyclic base and orthophosphoric acid

  • an aldopentose, a heterocyclic base and orthophosphoric acid

  • an aldopentose and a heterocyclic base

  • an aldopentose and orthophosphoric acid


C.

an aldopentose and a heterocyclic base

Nucleic acids (RNA and DNA) are the natural polymer of nucleotides. A nucleotide contains a nitrogenous (hetrocyclic) base, an aldopentose (generally ribose and deoxy-ribose) and a phosphate group. The combination of a hetrocyclic nitrogenous base and an aldopentose sugar is called nucleoside.

Hence,

Nucleoside hydrolysis aldopentose + heterocyclic nitrogenous base.


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425.

Which of the following biomolecules contain non-transition metal ion ?

  • Vitamin B12

  • Chlorophyll

  • Haemoglobin

  • Insulin


426.

Sucrose molecule is made up of

  • a gluco pyranose and a fructo pyranose

  • a gluco pyranose and a fructo furanose

  • a gluco furanose and a fructo pyranose

  • a gluco furanose and a fructo furanose


427.

Water insoluble component of starch is

  • amylopectin

  • amylose

  • cellulose

  • None of the above


428.

A nanopeptide contains ....... peptide linkages

  • 10

  • 8

  • 9

  • 18


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429.

An example ofa sulphur contaming amino acid is

  • lysine

  • serine

  • cysteine

  • tyrosine


430.

Which of the following is not present in a nucleotide?

  • Cytosine

  • Guanine

  • Adenine

  • Tyrosine


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