USWA ACADEMY JHANG
Paper:
Biology F.Sc
1
Total
Marks: 35 Time : 1 hr
Q.1: Each question has four possible answers. Select
the correct answer: 07
|
1)
|
The
smallest bacteria on the earth is
|
a) mycoplasma
|
b) Escherichia
coli
|
c) staphylococci
|
d) epulopiscium
fishelsoni
|
|
2)
|
Which
one of the following is not the characteristics of Gram positive cell wall
|
a) it
has two major layers
|
b) it
is more permeable
|
c) it
has outer membrane
|
d) it
has lipids 1-4%
|
|
3)
|
Vaccine
for rabbies was developed by
|
a) Robert
Koch
|
b) Robert
Hooke
|
c) Louis
Pasteur
|
d) Robert
Brown
|
|
4)
|
Pathogenicity
of bacteria is increased by
|
a) mesosome
|
b) flagella
|
c) slime
|
d) pili
|
|
5)
|
Bacteria
are
|
a) haploid
|
b) diploid
|
c) triploid
|
d) polyploid
|
|
6)
|
Reserve
food material in cyanobacteria is in the form of
|
a) sucrose
|
b) starch
|
c) glycogen
|
d) protein
|
|
7)
|
Which
one is not a cyanobacteria
|
a)
anabaena
|
b)
oscillatoria
|
c)
nostoc
|
d)
hormogonia
|
SUBJECTIVE
Q.2: Write short answers of the following
questions? 10x2
= 20
1.
what
are Koch postulates of germ theory of Disease?
2.
Describe
classification of bacteria on the basis of flagella.
3.
What
are pili and their functions in bacteria?
4.
Differentiate
between capsule and slime.
5. Write down misuses of antibiotics.
6. Differentiate between cyst and spore.
7.
Define the antiseptics and disinfectants.
8.
Explain the reproduction in nostoc.
9.
Give the economic importance of cyanobacteria.
10.
Write down the types of bacteria on the basis of respiration.
Long Questions
Q.3: (a) Write about nutrition in bacteria. (4)
(b)
Write down the chemical methods to control bacteria. (4)
Best
of Luck
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