Which of the following enzyme present in saliva acts as an antibacterial agent that prevents infection?

1. Salivary amylase

2. Thiocyanate

3. Lysozyme 

4. Chitinase

The saliva secreted by salivary glands does not 

(1) Contain electrolytes like ${\mathrm{Na}}^{+}$, $K^{+}$ , ${\mathrm{CI}}^{-}$ and

     ${\mathrm{HCO}}_3^{-}$ 

(2) Give safety against dental carries

(3) Bring about hydrolysis of starch upto 90%

(4) lnitiate the process of digestion

Which of the following reactions is not catalysed

by a brush border enzyme?

(1) Maltose $\stackrel{\mathrm{Maltase}}{\to }$ glucose+ glucose

(2) Lactose $\stackrel{\mathrm{Lactase}}{\to }$ glucose + glucose

(3) Starch $\stackrel{\mathrm{Amylase}}{\to }$ Disaccharide

(4) Nucleotides $\stackrel{\mathrm{Nucleotidase}}{\to }$ Nucleoside

Following are certain enzymatic reactions taking 

place in the human alimentary canal. Each 

reaction is depicted it with suitable enzyme A, B,

C and D. Find from the options the correct set of 

enzymes required to carry out these reactions

Starch $\stackrel{\mathrm{A}}{\to }$ Maltose

Nucleosides $\stackrel{\mathrm{B}}{\to }$ Sugars + Bases

Di and monoglycerides $\stackrel{\mathrm{C}}{\to }$ Fatty acids +

Glycerol

Trypsinogen $\stackrel{\mathrm{D}}{\to }$ Trypsin

(1) A $-$ Pancreatic amylase

     B $-$ Nucleotidase

     C $-$ Lipase

     D $-$ Trypsin

(2) A $-$ Salivary amylase

     B $-$ Nucleases

     C $-$ Dipeptidases

     D $-$ Enterokinase

(3) A $-$ Dipeptidases

     B $-$ Nucleotidase

     C $-$ Lipase

     D $-$ Trypsin

(4) A $-$ Salivary amylase

     B $-$ Nucleosidases

     C $-$ Lipase

     D $-$ Enterokinase

Match Column-I with Column-II
Column I                                 Column II

(i) Brunner’s gland                   a. Salivary amylase

(ii) Rugae                                b. Nucleosidase

(iii) Succus entericus                c. Mucosa layer

(iv) Carbohydrate                    d. Sub-mucosa
splitting enzyme

Choose the correct option

1. i-d, ii-a, iii-b, iv,-c

2. i-c, ii-d, iii-b, iv-a

3. i-b, iii-c, ii-a, iv-d

4. i-d, ii-c, iii-b, iv-a