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Biomolecules Test - 5

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Biomolecules Test - 5
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  • Question 1
    1 / -0

    Double helix model of DNA was proposed by proposed by

    Solution

    Double helix model of DNA was proposed by James Watson and Francis Crick in 1953 based on X-ray diffraction data produced by Maurice Wilkins and Rosalind Franklin.

  • Question 2
    1 / -0

    Length of DNA with 23 base pairs is

    Solution

    The distance between two base pairs in DNA is 3.4 Ao. The length of DNA with 23 base pairs is 23x 3.4 = 78.2 Ao.

  • Question 3
    1 / -0

    DNA and RNA resemble each other in possessing

    Solution

    Both DNA and RNA consists of polymers of nucleotides. RNA is single stranded but DNA is double stranded. DNA polynucleotide contains thymine but RNA polynucleotide contains uracil.

  • Question 4
    1 / -0

    Base pairs found in 5 turns of DNA spirals are

    Solution

    Each turn of DNA spirals contains 10 base pairs. So, in five turns of DNA total number of Base pair is 5 × 10 = 50 base pairs.

  • Question 5
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    Molecular formula of haemoglobin is

    Solution

    Haemoglobin is responsible for carrying oxygen. The molecular formula of haemoglobin is C3032H872O872N780S8Fe4.

  • Question 6
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    Plants can synthesis all types of fatty acids but animals lacks machinery to synthesis three fatty acids called essential fatty acids. They are

    Solution

    Plants can synthesis all types of fatty acids but animal cells lacks machineryto synthesis three fatty acids called as essential fatty acids. These are Linoleic , Linolenic and Arachidonic acids

  • Question 7
    1 / -0

    Proteins are polymerisation product of

    Solution

    Polymerisation is the chain of large number of repeating units. Proteins are polymerizationproduct of Amino acids combine together with peptide bonds.

  • Question 8
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    Which one of the following is fibrous protein?

    Solution

    Collagen is a fibrous protein. It is the main structural protein in the extracellular space in thevarious connective tissues. It is the most abundant protein in mammals.

  • Question 9
    1 / -0

    The number of amino acids found in proteins are

    Solution

    Based on the nature of R group there are many amino acids. However, those which occur in proteins are only of twenty one amino acids.

  • Question 10
    1 / -0

    Proteins are made up of

    Solution

    Proteins are made of building blocks which are different. Proteins are heteropolymers made of amino acids.

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