NCERT/Class 11/Biology/Biomolecules

Biomolecules

Class 11 · Biology

114 questions47 easy52 medium15 hard

Sample Questions

Q1.Silicon makes up 27.7% of the Earth's crust but is negligible in living organisms. What does this indicate about the chemical basis of life?

  • ALiving organisms selectively accumulate certain elements over others
  • BSilicon is toxic to all living organisms
  • CLiving organisms and Earth's crust have identical compositions
  • DSilicon cannot form any chemical bonds

Q2.Adenylic acid differs from adenosine in that it additionally contains:

  • AA second nitrogenous base
  • BA phosphate group esterified to the sugar
  • CA deoxyribose sugar instead of ribose
  • DAn amino acid

Q3.Which of the following is a nucleoside?

  • AAdenylic acid
  • BAdenosine
  • CAdenine
  • DATP

Q4.Polypeptides, polynucleotides, and polysaccharides together constitute the:

  • AAcid-soluble pool
  • BTrue macromolecular fraction of any living tissue
  • CSecondary metabolites
  • DInorganic fraction

Q5.Nucleic acids that behave like enzymes are called:

  • ACoenzymes
  • BRibozymes
  • CApoenzymes
  • DHoloenzymes

Q6.This is a sample question to preview what you'll get in the full practice test...

  • A. Option one
  • B. Option two
  • C. Option three
  • D. Option four
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Concepts Covered

Amino AcidsBiomacromolecules vs MicromoleculesChemical Composition of Living OrganismsCofactors, Coenzymes and Prosthetic GroupsEnzyme ClassificationEnzyme Kinetics and Factors Affecting ActivityEnzyme Properties and Active SiteLipids and Fatty AcidsNucleic Acids (DNA and RNA)Nucleotides and NucleosidesPolysaccharidesPrimary and Secondary MetabolitesProtein Structure LevelsProteins - Structure and Function

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