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Biomolecules Test - 2

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Biomolecules Test - 2
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  • Question 1
    1 / -0

    Which of the following substances does not fall in the category of carbohydrates?

    Solution

    Carbohydrates are polyhydroxy aldoses and polyhydroxy ketoses.
    The general formula of most of the carbohydrates can be written as CnH2nOn.

    Glycerol is a polyhydroxy alcohol.
    The formula of glycerol is C3H5O6.

     

  • Question 2
    1 / -0

    Which of the following substances fall(s) in the category of carbohydrates?

    Solution

    Glycogen is a carbohydrate made by animals and is known as animal starch. It is a storage form of glucose found in the muscles and the liver. It helps to maintain appropriate levels of glucose in the bloodstream and provide ready fuel for muscular contraction.

     

  • Question 3
    1 / -0

    Which of the following pairs contains a reducing sugar and a non-reducing sugar?

    Solution

    Glucose is a reducing sugar whereas sucrose is a non-reducing sugar.

     

  • Question 4
    1 / -0

    Which of the following is not a disaccharide?

    Solution

    Dextrose is a monosaccharide.

     

  • Question 5
    1 / -0

    Match the statements/expressions in Column–I with the statements/expressions in Column–II and indicate your answer by selecting the appropriate option. Any statement in Column–I can correctly match with only one statement in Column–II.

    Column–I Column–II
    (A) Peptide linkage
    (B) Polypeptide
    (C) Proteins
    (D) Zwitter ion    		 (a) Oxytocin
    (b) Molecular weight > 10,000
    (c) –CO-NH-
    (d) Molecules having oppositely charged groups
    Solution

    (A) – CO-NH- linkage is called peptide linkage.
    Thus, (A) – (c).
    (B) Polypeptides have molecular weight < 10,000. Oxytocin and glutathione belong to this class.
    So, (B) – (a).
    (C) Proteins have molecular weight > 10,000.
    Thus, (C) – (b).
    (D) Zwitter ion is a molecule having oppositely charged groups.
    So, (D) – (d).

     

  • Question 6
    1 / -0

    Directions For Questions

    The following question has four choices out of which ONLY ONE is correct.

    ...view full instructions

    Amino acid having a hydrophilic side chain is

    Solution

    Lysine has a basic, polar hydrophilic side chain: -CH2(CH3)2-NH2.

     

  • Question 7
    1 / -0

    The protein molecule present in haemoglobin is

    Solution

    Haemoglobin is the oxygen-binding protein of red blood cells and is a globular protein with a quaternary structure. Haemoglobin consists of four polypeptide subunits; two alpha chains and two beta chains. Haemoglobin transports oxygen in the blood from the lungs to the rest of the body.

     

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