Bacteria

Question 1

Bacteria are unicellular or multicellular prokaryotic organisms

Answer 1

Unicellular prokaryotic organisms.

Question 2

The sizes of bacteria vary between

Answer 2

O.1 to 10.0 micrometres

Question 3

What is the unit of measurement in bacteriology

Answer 3

Micrometre

Question 4

The diameter and length of Bacteria of medical importance measurea between

Answer 4

Diameter (0.2-1.5 micrometres)
Length (2-8 micrometres)

Question 5

Because bacteria are prokaryotic their sedimentation rate is

Answer 5

70S

Question 6

Which of the following is rod-shaped, endospore forming aerobic or facultative anaerobic , Gram-positive bacteria that are ubiquitous in nature.
A. Bacilli
B. Coccu

Answer 6

Bacilli

Question 7

According to shape bacteria is classified into

Answer 7

Spiral
Rod
Cocci

Question 8

Which has a grape-like shape
Streptococcus
Staphylococci
Diplococci
Tetrads

Answer 8

Staphylococci

Question 9

Which of the following is Gram-positive and remains attached during cell division
A. Bacilli
B. Cocci

Answer 9

Cocci

Question 10

Give the classifications of bacteria according to
Pairs, chains, grape- like and clusters of four

Answer 10

Diplococci
Streptococci
Staphylococci
Tetrads

Question 11

Spiral bacteria is classified into

Answer 11

Vibrio
Spirilla
Spirichetes

Question 12

With of the following is slightly curved or comma shaped bacterial cell which is generally single and 2-3 micrometres
A. Vibrios
B. Spirilla
C. Spirochetes

Answer 12

Vibrios

Question 13

A bacterium with rigid spiral (helical) structure (not easily band, not flexible), thick, long and move with flagella, spiral Shape is known as

Answer 13

Spirillum

Question 14

What is the length of Spirilla

Answer 14

6-15 micrometres

Question 15

Which of the following moves by axial filaments
A. Vibrio.
B. Spirilla
C. Spirochetes

Answer 15

Spirochetes

Question 16

Obligate aerobes
Obligate anaerobes
Facultative anaerobes

Answer 16

Those bacteria that require oxygen to grow
Those bacteria that are poisoned by oxygen
Those that can grow with or without oxygen.

Question 17

What are the examples of Gram-positive bacteria

Answer 17

Staphylococcus
Streptococcus
Clostridium
Bacillus

Question 18

Examples of Gram-negative bacteria

Answer 18

E. Coli
H. Pylori
Salmonella spp
Shigella spp

Question 19

An example of an acid fast bacteria is

Answer 19

Mycobacterium

Question 20

An example of a wall less bacteria

Answer 20

Mycoplasama

Question 21

Gram-negative and Gram-positive bacteria have what type of walls

Answer 21

Lipopolysaccharide and peptidoglycan walls respectively.

Question 22

Which of the following retains the crystal violet dye and changes to purple while standing.
A. Gram-positive
B. Gram-negative

Answer 22

Gram-positive bacteria

Question 23

Based on cell wall structure bacteria can be classified into

Answer 23

Gram-positive
Gram-negative
Acid fast
Wall-less

Question 24

Which of the following have periplasmic space present
A. Gram-positive
B. Gram-negative

Answer 24

Gram-negative

Question 25

Which of the following has Teichioc acid present
A. Gram-positive
B. Gram-negative

Answer 25

Gram-positive bacteria

Question 26

Which of the following is susceptible to enzyme lysosome and penicillin.
A. Gram-positive
B. Gram-negative

Answer 26

Gram-positive