Bacteria
1.Which of the following is rod shaped bacteria?
a.Coccus
b.Bacillus
c.Spirillum
d.Vibrio
Ans------>b
2.Bacterial DNA is
a.Circular
b.Straight
c.Hellicle
d.None
Ans------>a
3.Bacteria without flagella is:
a.Peritrichous
b.Atrichous
c.Amphitrichous
d.Lophotrichous
Ans------>b
4.Circular DNA is found in:
a.Bacteria
b.Algae
c.Fungi
d.None
Ans------>a
5.Which of the following is nitrifying bacteria?
a.Pseudomonas
b.Nitrobacter
c.Azotobacter
d.Rhozobium
Ans------>b
6.Bacterial DNA is identified as
a.DNA only
b.DNA without histone
c.DNA with histone
d.DNA and RNA
Ans------>b
7.Cyanobacteria is
a.Photosynthetic bacteria
b.Nitrogen fixing bacteria
c.Chemoautotroph
d.Blue breen algae
Ans------>d
8.Which of the following bacteria shows darting type of
movement?
a.Vibrio
b.Coccus
c.Spirochaetae
d.Clostridium
Ans------>a
9.Which of the following is absent in bacteria?
a.Cell wall
b.Nucleoid
c.Ribosome
d.Mitochondria
Ans------>d
10.Rod shaped bacteria are called
a.Bacilli
b.Cocci
c.Spirilla
d.Comma
Ans------>b
11.Nitrosomanas is;
a.Photoautotroph
b.Anaerobe
c.Chemoautotroph
d.Symbiotic
Ans------>a
12.The smallest free living organism is
a.Virus
b.Mycoplasma
c.Cyanobacteria
d.Bacteria
Ans------>b
13.Bacteria was discovered by
a.Linnaeus
b.Pasteur
c.Robert Koch
d.Leeuwenhoek
Ans------>d
14.Bacteria which are smallest in size is a:
a.Cocci
b.Vibrio
c.Bacilli
d.Spirilla
Ans------>a
15.Which of the following diseases is caused by bacteria?
a.Arthritis
b.Amoebic dysentery
c.Beri –beri
d.Diphtheria
Ans------>d
16.Pilli in bacteria is used for
a.Asexual reproduction
b.Prey hunting
c.Locomotion
d.Sexual contact
Ans------>d
17.Typhoid fever caused by:
a.Escherichia
b.Salmonella
c.Shigella
d.Giardia
Ans------>b
18.Germ theory of diseases was put forward by:
a.Robert Koch
b.Louis pasteeur
c.Edward jenner
d.John snow
Ans------>b
19.E coli bacteria is:
a.Monotrichous
b.Lophotrichous
c.Amphitrichous
d.Peritrichous
Ans------>d
20.Who discovered conjugation in bacteria?
a.Lederberg and tatum
b.Griffith
c.Jacob and wollman
d.Zinder and Lederberg
Ans------>a
21.Bacteria are plant as:
a.Have rigid cell wall
b.Cannot move
c.Present everywhere
d.Can multiply by fission
Ans------>a
22.Plasmids are:
a.Viruses
b.Genetic material of virus
c.Genetic material of bacteria
d.Extra chromosomal genetic element of bacteria
Ans------>d
23.Which of the following method of genetic recombination is called
“Griffith effect”?
a.Tr
Ansduction
b.Tr
Ansformation
c.Conjugation
d.None of these
Ans------>b
24.Murein of bacterial cell wall is derivate of:
a.Protein
b.Fat
c.Organic acid
d.Sugar
Ans------>d
25.Which is the characterstics of mycolasma?
a.Absence of cell wall
b.Typical colonial appearance
c.Filterability through appearance
d.All of these
Ans------>d
26.Little leaf of brinjal is caused by:
a.Virus
b.Fungus
c.Mycoplasma
d.Algae
Ans------>c
27.The shape of Diplococcus are:
a.Globular
b.Rod shaped
c.Coiled
d.Curved comma like
Ans------>a
28.The nitrifying bacteria convert:
a.Nitrates to nitrites
b.Nitrites to ammonia
c.Nitrites to nitrates
d.Ammonia to nitrates
Ans------>d
29.What is wrong about mycoplasma?
a.They are called PPLO
b.They are pleomorphic
c.They are sensitive to penicillin
dThey produce diseases in plant
Ans------>c
30.An aerobic bacteria found commonly in the intestine is:
a.Escherichia coli
b.Streptococcus
c.Vibrio
d.Bacillus
Ans------>a