Biomolecules Test

Biomolecules

This is Biomolecules Test-03 for CBSE class 11 Biology.. There are 15 questions in this test with each question having around four answer choices.

Questions & Answers

1
Double helix model of DNA was proposed by proposed by
  • A
    Kornberg
  • B
    Watson and Crick
    Correct
  • C
    Holley and Nirenberg
  • D
    Nirenberg
2
Length of DNA with 23 base pairs is
  • A
    74.8\({A^o}\)
  • B
    78 \({A^o}\)
  • C
    78.2 \({A^o}\)
    Correct
  • D
    78.4 \({A^o}\)
3
DNA and RNA resemble each other in possessing
  • A
    Ability to replicate
  • B
    Similar sugar
  • C
    Polymers of nucleotides
    Correct
  • D
    Similar pyrimidines bases
4
Base pairs found in 5 turns of DNA spirals ar
  • A
    10
  • B
    100
  • C
    20
  • D
    50
    Correct
5
Molecular formula of haemoglobin is
  • A
    \({C_{303}}{H_{168}}{O_{872}}{N_{745}}{S_6}F{e_2}\)
  • B
    \({C_{3202}}{H_{564}}{O_{542}}{N_{785}}{S_6}F{e_4}\)
  • C
    \({C_{3032}}{H_{872}}{O_{872}}{N_{780}}{S_8}F{e_4}\)
    Correct
  • D
    None of these
6
Plants can synthesis all types of fatty acids but animals lacks machinery to synthesis three fatty acids called essential fatty acids. They are
  • A
    Linoleic , Tartaric and Oleic acids
  • B
    Linolenic, Palmitic and Arachidonic acids
  • C
    Linoleic , Linolenic and Arachidonic acids
    Correct
  • D
    None of these
7
Proteins are polymerisation product of
  • A
    Amino acids
    Correct
  • B
    Monosaccharide
  • C
    Muramic acid
  • D
    Glucose
8
Which one of the following is fibrous protein?
  • A
    Ribozymes
  • B
    Hemicellulose
  • C
    Haemoglobin
  • D
    Collagen
    Correct
9
The number of amino acids found in proteins are
  • A
    18
  • B
    20
  • C
    16
  • D
    21
    Correct
10
Proteins are made up of
  • A
    Homopolymers
  • B
    Heteropolymers
    Correct
  • C
    Monomers
  • D
    Nucleosides
11
The most abundant protein present in the whole of the biosphere is
  • A
    Fatty acid
  • B
    Cellulose
  • C
    RUBP
    Correct
  • D
    Collagen
12
The long protein chain is folded upon itself like hollow woollen ball are called as
  • A
    Quaternary structure
  • B
    Primary structure
  • C
    Secondary structure
  • D
    Tertiary structure
    Correct
13
Dietary proteins are otherwise called as
  • A
    Aromatic aminoacids
  • B
    Alpha aminoacids
  • C
    Essential aminoacids
    Correct
  • D
    Non-essential aminoacids
14
Proteins carry out many functions in living organisms such as
  • A
    genetic material
  • B
    role in catalytic activity of the enzyme
  • C
    store house of energy
  • D
    Fight against infectious organisms
    Correct
15
Which helps in transporting glucose into cells?
  • A
    Trypsin
  • B
    Insulin
  • C
    GLUT-4
    Correct
  • D
    Receptornucleicacids