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 Multiple Choice QuestionsMultiple Choice Questions

511.

Which of the following statements is not correct?

  • Insulin maintains sugar level in the blood of ahuman body

  • Ovalbumin is a simple food reserve in egg-white

  • Blood proteins thrombin and fibrinogen are involved in blood clotting

  • Blood proteins thrombin and fibrinogen are involved in blood clotting

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512.

The difference between amylose and amylopectin is

  • Amylopectin have 1 → 4 α-linkage and 1 → 6 α-linkage

  • Amylose have 1 → 4 α-linkage and 1 → 6 β-linkage

  • Amylose is made up of glucose and galactose

  • Amylopectin have 1 → 4 α-linkage and 1 → 6 β-linkage


513.

On hydrolysis of starch, we finally get

  • Glucose

  • Fructose

  • Both (a) and (b)

  • Sucrose


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514.

In DNA, the complimentary bases are

  • adenine and thymine; guanine and cy1osine

  • adenine and thymine; guanine and uracil

  • adenine and guanine, thymine and cytosine

  • uracil and adenine; cytosine and guanine


A.

adenine and thymine; guanine and cy1osine

DNA consists of purine and pyrimidines. Purine bases are adenine and guanine and pyrimidine bases are thymine and uracil. According to base pairing rule, adenine pairs with thymine (A = T) and cytosine pairs with guanine (C G).


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515.

The general molecular formula for disaccharide is

  • C12H22O11

  • C10H20O10

  • C12H20O10

  • C12H22O10


516.

Which one of the following proteins transports oxygen in the blood stream?

  • Myoglobin

  • Insulin

  • Albumin

  • Haemoglobin


517.

Proteins are composed of

  • α- amino acids

  • carbohydrates

  • vitamins

  • mineral salts


518.

Which of the following does not reduce Fehling's solution?

  • Benzaldehyde

  • Formic acid

  • Glucose

  • Fructose


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519.

Which of the following is not reducing sugar?

  • Glucose

  • Fructose

  • Lactose

  • Sucrose


520.

Aniline in a set of reactions yielded a product D

The structure of the product D would be

  • C6H5CH2NH2

  • C6H5NHCH2CH3

  • C6H5NHOH

  • C6H5CH2OH


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