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Biomolecules Test - 46

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Biomolecules Test - 46
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  • Question 1
    1 / -0
    What is the chemical nature of the majority of prosthetic groups?
    Solution
    A coenzyme or metal ion that is very tightly or even covalently bound to the enzyme protein is called a prosthetic group. These may be organic or inorganic in nature. For example includes flavin nucleotides and heme. This accentuates the enzymatic activity.
  • Question 2
    1 / -0
    Which of the following is not consumed in a biochemical process?
    Solution
    Enzymes catalyzes the biochemical process. They catalyze the hundreds of stepwise reactions that degrade nutrient molecules, conserve and transform chemical energy, and make biological macromolecules from simple precursors. They provides an alternative reaction pathway. But they are neither consumed or undergo any permanent changes during the reaction and so remain unchanged at the end of the reaction. They can only alter the rate of reaction, not the position of the equilibrium.
  • Question 3
    1 / -0
    The sex hormone, which controls the development and maintenance of pregnancy, is:
    Solution
    Progesterone is one of the hormones in our body, that stimulates and regulates various functions. Progesterone plays a role in maintaining pregnancy. 

    The hormone is produced in the ovaries, the placenta (when a woman gets pregnant) and the adrenal glands. It helps to prepare your body for conception and pregnancy and regulates the monthly menstrual cycle. It also plays a role in sexual desire.

    If pregnancy occurs, progesterone is produced in the placenta, and levels remain elevated throughout the pregnancy. The combination of high estrogen and progesterone levels suppress further ovulation during pregnancy. Progesterone also encourages the growth of milk-producing glands in the breast during pregnancy.

    Option C is correct.

  • Question 4
    1 / -0
    The nucleic acid base having two possible binding sites is:
    Solution
    Two possible binding sites in guanine.

  • Question 5
    1 / -0
    A polysaccharide is a polymer of ______.
    Solution
    A polysaccharide is a polymer of monosaccharides. For example cellulose (a polysaccharide) is a polymer of D-glucose (monosaccharide).

    Hence the correct option is A.
  • Question 6
    1 / -0
    Vitamin $${B}_{1}$$ is :
    Solution
    Thiamine, thiamin or vitamin B, named as the "thio-vitamine" is a water-soluble vitamin of the B complex. 

    So, option C is correct.
  • Question 7
    1 / -0
    A disaccharide consists of two mono saccharides joined by _____ bonds.
    Solution
    A disaccharide consists of two mono saccharides joined by glycoside bonds.
    For example,
    (1) Sucrose is a disaccharide containing two monosaccharids glucose and fructose  joined by glycoside bonds.
    (2) Maltose is a disaccharide containing two monosaccharids glucose and glucose joined by glycoside bonds.
    (3) Lactose is a disaccharide containing two monosaccharids glucose and galactose  joined by glycoside bonds.
  • Question 8
    1 / -0
    Blood calcium is increased by administration of
    Solution
    $$\text{Parathormone is secreted from parathyroid gland and increases calcium reabsorption from the bones and causes}$$ $$\text{mobilisation of calcium in the blood.}$$
  • Question 9
    1 / -0
    Enzymes differ from inorganic catalysts in ?
    Solution

  • Question 10
    1 / -0
    All enzymes are?
    Solution

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