MICROBIOLOGY - St.Joseph's College, Trichy.: Home

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Feb 12, 2013 (4 years and 4 months ago)

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CLASS: M.Sc. BIOTECHNOLOGY






11N/ 309

St. JOSEPH’S COLLEGE (AUTONOMOUS) TIRUCHIRAPPALLI


620 002

SEMESTER EXAMINATIONS


NOVEMBER 2011

TIME: 3 Hrs.








MAXIMUM MARKS: 100

SEM

SET

PAPER CODE

TITLE OF THE PAPER

I

201
1

10PBT1201B

MICROBIOLOGY


SECTION


A

Answer all the questions:







20 x 1 = 20

Choose the correct answer:

1.

Small pox is caused by


a)

Satellite virus

b)

TMV


c)

Variola

d)

Necrotic yellow virus

2.

Methane producing bacteria reproduces by



a)

Binary fission

b)

budding


c)

transverse fission

d)

Fragmentation

3.

In continuous culture, the bacterial population remains in the


a)

growth phase

b)

stationary phase


c)

decline phase

d)

log phase

4.

Method is used to remove microorg
anisms physically


a)

flaming

b)

filtration


c)

Tyndallization

d)

autoclaving

5.

Diphtheria is a


a)

Viral disease

b)

fungal disease


c)

bacterial disease

d)

protozoan disease


Fill in the blanks:

6.

Broth is a ______ culture medium.

7.

B
acteria posses long sinuous unbranched appendages called ______.

8.

______ are units of DNA which move from one DNA molecular to anther.

9.

______ involves treatment of infections chisease by introducing antibiotics into diseased body.

10.

______ is
an example for blue


green algae.


State True or False:

11.

Tobacco Musaic Virus was reported first by Adolf Mayer.

12.

Bacterial cellwall is formed of strong fibres compound of peptidoglycans.

13.

Membrane filter count is otherwise called as bread
method.

14.

Silver nitrate is used as water disinfectant.

15.

Edible yeasts are known as food yeasts.


Answer in one or two sentences:

16.

What is mean by growth curve?

17.

Name any two culture types of microbes.

18.

What is sporulation?

19.

What
is tyndallization?

20.

Define fermentation.


SECTION


B

Answer all the questions:








5 x 4 = 20

21.

a.

Write short notes on T4 bacteriophage.


OR


b.

Explain the methods of bacterial growth.

22.

a.

Draw the structure and explain the

components of bacteria.


OR


b.

Describe the classification of bacteria based on nutritional types.

23.

a.

How will you measure the microbial growth?


OR


b.

Give an account on antibiotics and their mode of action.

24.

a.

Write an account on chem
ical control of microorganism.


OR


b.

Explain about presentation of food against temperature and chemicals.

25.

a.

Describe the methods adopted on waste water treatment.


OR


b.

Give an account on immune system.


SECTION


C

Answer any FOUR ques
tions:






4 x 15 = 60

26.

Write a detail essay on classification of virus.

27.

Describe the anaerobic metabolism of micro organism.

28.

Explain about the growth of microorganisms with reference to different phases.

29.

Write an essay on physi
cal control of micro organisms.

30.

Give a detail note on micro organisms and their impact on human diseases.

**************