Keratin, a structural protein is present in:
(a) hair
(b) skin
(c) wool
(d) all of these

Subtopic:  α - Amino Acids, Peptide Bond, Proteins & Structure |
 73%
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Blood protein is ?
(a)albumin
(b)haemoglobin
(c)both (a) and (b)
(d)none of these

Subtopic:  α - Amino Acids, Peptide Bond, Proteins & Structure |
 78%
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A vitamin which plays a vital role in the coagulating property of blood is:-

(1) Vitamin A
(2) Vitamin D
(3) Vitamin B
(4) Vitamin K

Subtopic:  Vitamins, Hormones & Enzymes |
 93%
From NCERT
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Which is not a poison for enzymes?

(a) CN-                       (b) Fe3+

(c) Pb2+                     (d) AsO43-

Subtopic:  Vitamins, Hormones & Enzymes |
 73%
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The non-proteinous substances which certain enzymes require for their activity are called:

(a) catalysts                      (b) inhibitors

(c) co-enzymes                  (d) epimers

Subtopic:  Vitamins, Hormones & Enzymes |
 80%
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Antibodies are ?
(a) Carbohydrates
(b) proteins
(c) phospholipids
(d) lipids

Subtopic:  α - Amino Acids, Peptide Bond, Proteins & Structure |
 87%
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Which of the following statements about enzymes is incorrect?

(1) The catalytic action of an enzyme is not specific

(2) An enzymatic reaction is highly sensitive to temperature

(3) The catalytic action of enzymes is due to their capacity to lower the energy of activation of a particular reaction

(4) None of the above

Subtopic:  Vitamins, Hormones & Enzymes |
 83%
From NCERT
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An antigen develops antibodies which protect the body from their harmful effects. The antibodies
are:-

(a) immunoglobulins

(b) phospholipids

(c) albumins

(d) lymphocytes

Subtopic:  α - Amino Acids, Peptide Bond, Proteins & Structure | Vitamins, Hormones & Enzymes |
 85%
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Deficiency of which Vitamin develops impotencey:

(a) B

(b) C

(c) D

(d) E

Subtopic:  Vitamins, Hormones & Enzymes |
 74%
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Which of the following is protein hormones?

(a) Insulin

(b) Oxytocin

(c) Both (a) and (b)

(d) None of the above

Subtopic:  α - Amino Acids, Peptide Bond, Proteins & Structure | Vitamins, Hormones & Enzymes |
 79%
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