Match the tissues/molecules mentioned in column I with those of their degrading enzymes mentioned in column II and select the correct option from the given codes.

            Column I                             Column II

A.  Cell wall                               (i)  Proteases

B. RNA                                      (ii) Pectinases

C. Histone                                 (iii) Ribonucleases

D. Pectin                                   (iv) Cellulase

(a) A-(iv), B-(iii), C-(i), D-(ii)

(b) A-(ii), B-(i), C-(iv),D-(iii)

(c) A-(i),B-(ii),C-(iii),D-(iv)

(d) A-(iii),B-(iv),C-(ii), D-(i)

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Excess carbohydrates and proteins are stored in the body as

(a) amino acids                       (b) fats

(c) starch                               (d) monosaccharides

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Nickel contributes to the formation of one of the following

(a) urease                               (b) dehydrogenase

(c) rubisco protein                   (d) nitrate reductase

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Enzyme often has additional parts in their structures that are made up of molecules other than proteins. When this additional chemical part is an organic molecule, it is called

(a) cofactor                   (b) coenzyme

(c) substrates                (d) Both (a) and (b)

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Amino acid is a:

(a) Substituted methane                    (b) Substituted ethane

(c) Any acid having amino group        (d) Derivative of indol acetic acid

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Which of the above is Zwitterionic form?

(a) A                    

(b) C                   

(c) B                    

(d) All are correct

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The quaternary structure of a protein:

(a) Consists of 4 subunits - hence the name quaternary

(b) Is unrelated to the function of the protein

(c) Both (a) and (b)

(d) Depends on the 1° structure of subunits

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Adult human haemoglobin consists of:

(a) 2 subunits (á, á)                            (b) 2 subunits (â, â)

(c) 4 subunits (2á, 2â)                       (d) 3 subunits (2á, 1â)

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Lecithin is:

(a) Phospholipid    (b) Carbohydrate   (c) Protein             (d) Amino acid

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Which one is false?
(a) Fatty acids may be unsaturated (with one or more C = C bonds) or a saturated (without double bonds)
(b) Fatty acid(s) may be esterified with glycerol forming monoglyceride, diglyceride and then triglyceride
(c) Sometimes especially neural tissues have lipid very simple structures
(d) Fats and oils are triglycerides

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