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Biomolecules Test - 47

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Biomolecules Test - 47
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  • Question 1
    1 / -0
    The major portion of the dry weight of plants comprises of ______________.
    Solution
    The major portion of dry weight of plant comprises of carbon, hydrogen and oxygen. These elements are called as framework element. They are involved in building up of cell walls and storage products of plants.
    Hence B is the correct option. 
  • Question 2
    1 / -0
    The term 'non-essential amino acids' is applied to amino acids that are
    Solution
    Non-essential amino acids are the naturally occurring amino acids, that the human body can synthesize for itself, and so need not be provided by dietary protein. The body is capable of creating them on its own, therefore it is not necessary for it to attain them from an outside source. They include alanine, asparagine, aspartic acid, cysteine, glutamic acid, glutamine, glycine, proline, serine, and tyrosine. 
  • Question 3
    1 / -0
    Most diverse macromolecules found in cells, both physically and chemically are ______________.
    Solution
    Component           %of the total cellular mass
    Water                   70-90
    Proteins               10-15
    Carbohydrates       3
    Lipid                        2
    Nucleic acids        5-7
    Ions                         1
    Four major classes of macromolecules may be identified, these are proteins, polysaccharides, lipids, and nucleic acids. The relative amount of these macromolecules in the cell are given in the table. Out of all macromolecules found in the cell, the proteins are most chemically and physically diverse.

    So the correct option is "Proteins".
  • Question 4
    1 / -0
    Respiration is a
    Solution

    A. Correct option is (D)

     B. Explanation for the correct option.

    1.    During respiration ATP formation takes place viz. anabolic process.

    2.    During the same catabolism takes place and the formation of carbon di oxide  and water molecules.

    3.    Respiration is an amphibolic pathway.

     

  • Question 5
    1 / -0
    Which of the following is most important for the growth of children upto the age of 14?
    Solution
    Of the given list, protein are important for the growth of children upto the age of 14. This is because proteins helps to build, maintains and repair body tissue during the growth process of the adolescents. Children need to eat two to three servings of protein-rich food each day. Milk and other dairy products also are good protein sources for children.
    So, the correct answer is option A.
  • Question 6
    1 / -0
    The animal flesh is a good source of high quality proteins, because 
    Solution
    Proteins are essential nutrients for the human body and are the building blocks of body tissue. Human beings requirement of proteins which are polymer chains of amino acids linked together are met through intake of animal sources such as meat, fish, dairy products and eggs as well as vegan sources such as legumes, nuts, soya, whole grain and pulses. However, of these the animals proteins have the right set of heme amino acids that can be absorbed easily by the human body.
    So, the correct answer is option C.
  • Question 7
    1 / -0
    The major requirement of protein in the body is for
    Solution
    Dietary protein is required to promote growth, repair damaged cells and tissue, synthesize hormones and for a variety of metabolic activities.
    Carbohydrates and fats provide energy.
    Therefore, the correct answer is option D.
  • Question 8
    1 / -0
    Which one of the following sets of symptoms result from protein deficiency during the pre-school age?
    Solution
    Proteins are composed of molecules called as amino acids and each amino acid contains four elements hydrogen, oxygen, nitrogen and carbon. Protein deficiency in the body can be identified by a number of symptoms which differ from age to age. The centres for disease control and prevention reports that children under the age of 5 are most susceptible to protein deficiency. The symptoms of this include growth retardation, decreased musculature, discolouration of hair and significant lack of energy.
  • Question 9
    1 / -0
    The major requirement of protein in the body is for
    Solution
    The major requirement of protein in the body is for growth and repair.
    Protein is a nutrient needed by the human body for growth and maintenance. Aside from water, proteins are the most abundant kind of molecules in the body. Protein can be found in all cells of the body and is the major structural component of all cells in the body, especially muscle. This also includes body organs, hair and skin. Proteins are also used in membranes, such as glycoproteins. When broken down into amino acids, they are used as precursors to nucleic acid, coenzymes, hormones, immune response, cellular repair, and other molecules essential for life. Additionally, protein is needed to form blood cells.
    Therefore, the correct answer is option E.
  • Question 10
    1 / -0
    The term 'non-essential amino acids' is applied to amino acids that are 
    Solution
    Essential amino acids are those that are "essential" in the diet. In other words, our metabolism cannot create them. Therefore, we need to obtain them through foods containing these essential amino acids. Fortunately, protein-containing foods contain varying degrees of the essential amino acids. During times of starvation, our body relies on its own protein stores, such as pre-albumin, albumin, and ultimately protein from sources that it normally shouldn't have to utilize. Non-essential amino acids are those which can be produced from other amino acids and substances in the diet and metabolism. During times of need, the metabolism can shift into producing the amino acids that it requires for synthesizing proteins essential to our survival. 
    Therefore, the correct answer is option A.
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