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Biomolecules Test - 58

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Biomolecules Test - 58
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  • Question 1
    1 / -0
    Which of the followings can bring about the denaturation of proteins?
    Solution
    Denaturation of proteins involves the disruption and possible destruction of both the secondary and tertiary structures. There are various denaturing agents like change in temperature and pH, salts of heavy metals like lead, mercury, silver, etc, reducing agents, detergents, acids and bases. Heavy metals attack the disulfide bonds as they have higher affinity to sulfur. The protein stability is affected at lower and higher temperature. 
    Thus, the correct answer is options A and B.
  • Question 2
    1 / -0
    The lipid that mainly functions are fuel reserve in animals is:
    Solution
    Phosphatidyl inositol as a participant in the essential metabolic process in all plants and animals, both directly and via a number of metabolites.
    It is used as a fuel reserve in animals.
  • Question 3
    1 / -0
    Methylated form of phosphatidyl ethanolamine is known as:
    Solution
    Methylated form of phosphatydil ethanolamine is phosphatidylcholine.

  • Question 4
    1 / -0
    Cofactor is a part of 
    Solution
    A Holoenzyme is a functional enzyme (active active) that attains activity when its two parts apoenzyme and cofactor combine together. Apoenzyme is an inactive form of the enzyme, while the cofactor can be either an inorganic (metal ion) or organic factor.
    So, the correct answer is 'Holoenzyme'
  • Question 5
    1 / -0
    Which of the following lipids is deficient in infants with respiratory distress syndrome ?
    Solution
    Deficiency of dipalmitoyl phosolinephatidycholine causes respiratory distress syndrome as this acts as slippery substance or surfactant in lungs, it's function is fill lungs with air and keeps air sacs from deflating.
  • Question 6
    1 / -0
    Glycerol is a backbone of :
    Solution
    Glycerophospholipid(Triglceraldehyde) made from the condensation reaction between glycerol and fatty acid called esterification. 
    Alcohol forms the hydrogen bonds with acid and gives strength to the tri glyceraldehyde.
    Thus glycerol is the backbone of glycerophospholipids.

  • Question 7
    1 / -0
    Thromboxanes :
    Solution
    Thromboxane is a vasoconstrictor and a potent hypertensive agent, 
    Functions:-
    •  it facilitates platelet aggregation. 
    • It is in homeostatic balance in the circulatory system with prostacyclin. 
  • Question 8
    1 / -0
    Which of the following is a cofactor
    Solution
    Prosthetic groups are cofactors that bind tightly to proteins or enzymes. They cannot be easily removed. They can be organic compounds or metal ions and are often attached to proteins by a covalent bond.Thus the correct answer is option A.
  • Question 9
    1 / -0
    Low calorie sweetener protein used by the people of West Africa is
    Solution
    • There are various types of sweeteners available in the market which are used for the low calorific value. 
    • The sweetener which is used in the Western regions of Africa is known as brazzein. 
    • The sweetener has low-calorie value. This is a sweet protein that is obtained from a climbing plant Oubli. 
    Thus, the correct answer is option A. 
  • Question 10
    1 / -0
    Which of the following is an anabolic process?
    Solution
    The anabolic processes are the reactions in which the smaller organic molecules are used for the production of the large complex molecules. The smaller amino acids are added to form the linear chain of large proteins. The phosphate group is added to the AMP and ADP molecules to form ATP. There is energy stored in this large molecules. 
    Thus, the correct answer is option D. 
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