Spectrum Biology - September 2016

21. Which one is correctly matched?

(a) Vitamin-E — Thiamine

(b) Vitamin-D — Riboflavin

(c) Vitamin-A — Calciferol

(d) Vitamin-B 12 — Cyanocobalamin

22. Note the following.

I. Dentition is heterodont.

II. Canines are poorly developed.

III. Incisors are chisel-like and poorly developed.

IV. Herbivorous and diastema is present.

V. The dental formula is I 2/1, C 0/0, Pm 3/2, M 3/3.

Which of the above are true for Oryctolagus?

(a) I, II and IV (b) I, IV and V

(c) I, II, IV and V (d) III, IV and V

23. Match the following Columns.

Column I Column II

A. Naphthoquinone 1. Amino acid metabolism

B. Niacin 2. Osteomalacia

C. Ascorbic acid 3. Matrix of cartilage

D. Calciferol 4. NAD

E. Thiamine 5. Prothrombin

Codes

ABCD E

(a)5324 1

(b)4532 1

(c) 5432 1

(d)3542 1

24. Which of the following are required in minimum

amount by human?

(a)Iron, iodine, carbon, manganese, copper, oxygen

(b) Iron, iodine, manganese, copper, zinc, fluorine

(c) Iron, iodine, manganese, zinc, hydrogen

(d)Nitrogen, oxygen, zinc, fluorine

25. The following is a scheme showing the fate of

carbohydrates during digestion in the human

alimentary canal. Identify the enzymes acting at

stages indicated as A, B, C and D. Choose the correct

option from those given.

(a) A–Amylase, B–Maltase, C–Lactase, D–Invertase

(b) A–Amylase, B–Maltase, C–Invertase, D–Lactase

(c) A–Amylase, B–Invertase, C–Maltase, D–Lactase

(d) A–Amylase, B–Lactase, C–Maltase, D–Invertase

26. Which of the following is correct chronological order

for enzyme activity of some enzymes taking part in

protein digestion?

(a) Pepsin → Trypsin → Peptidase

(b) Pepsin → Peptidase → Trypsin

(c) Trypsin → Pepsin → Peptidase

(d) Peptidase → Trypsin → Pepsin

27. Which one of the following secretions is correctly

matched with its source, target and nature of action?

Secretion Source Target Action

(a)Gastrin Stomach

lining

Oxyntic

cells

Production of

HCl

(b)Inhibin Sertoli cells Hypotha-

lamus

Inhibition of

secretion of

gonadotropic

releasing

hormone

(c) Enteroki-

nase

Duodenum Gall

bladder

Release of bile

juice

(d)Atrial

Natriuretic

Factor

Sinoatrial

Node M-cells

of atria

Juxta-

glomerular

apparatus

Inhibition of

release of

rennin

28. In the wall of alimentary canal, what is the actual

sequence from outer to inner?

(a)Serosa, longitudinal muscle, mucosa, submucosa

(b) Mucosa, serosa, longitudinal muscle

(c) Serosa, longitudinal muscle, circular muscle,

submucosa, mucosa

(d)Serosa, longitudinal muscle, submucosa, mucosa

29. Acetylcholinesterase enzyme splits acetylcholine into

(a)acetone and choline

(b) acetic acid and choline

(c)aspartic acid and acetylcholine

(d)amino acid and choline

30. Read the following statements.

I. In human, small intestine is the longest portion

of the alimentary canal.

II. Absorption of digested food requires a very large

surface area.

Identify the correct choice on the two statements.

(a) Statements I is correct and II is incorrect

(b) Both statements I and II are correct

(c) Both the statements are incorrect

(d) Statement II is correct and I is incorrect

Galactose

B

Lactose

Glucose

C

Maltose

Fructose

D

Sucrose

A

Starch

Answers

1.(b) 2.(c) 3.(b) 4.(b) 5.(b)

6.(d) 7.(d) 8.(c) 9.(b) 10.(a)

11.(d) 12.(c) 13.(a) 14.(a) 15.(c)

16.(a) 17.(d) 18.(c) 19.(a) 20.(d)

21.(d) 22.(b) 23.(c) 24.(b) 25.(d)

26.(a) 27.(d) 28.(c) 29.(b) 30.(b)