Question 1

All of the following are true as regard endospore except:

Accepted Answer

A)  Can be stained by gram stain 
B)  Highly resistant 
C)  Formed outside host 
D)  Formed in adverse conditions

Question 2

Endotoxins:

Accepted Answer

A)  Mucopolysaccharides 
B)  Lipopolysaccharides 
C)  Nucleic acid 
D)  Proteins 
E)  Peptidoglvcan

Question 3

Fimbria are absent in

Accepted Answer

A)  Gram negative 
B)  Gram positive 
C)  Both 
D)  Non of these

Question 4

Bacterial cell multiplies by:

Accepted Answer

A)  Binary fission 
B)  Budding 
C)  Sexual multiplication 
D)  Mitosis

Question 5

Regarding stages of infection : period of invasion:

Accepted Answer

A)  Time from initial contact with the infectious agents to the appearance of first symptoms 
B)  The earliest symptoms of infection appear as a vague feeling of discomfort, generalized body ache 
C)  The specific signs and symptoms exhibited by the patients according to the site of infection 
D)  The period of recovery.

Question 6

When one flagellum is present at both ends of bacterial cell the arrangement is known as
A(Monotrichous
B(Peritrichous
C(Amphitrichous
D(Non of these

Accepted Answer

Question 7

Toxoid is :

Accepted Answer

A)  Toxin lost its antigenicity but not toxicity 
B)  Toxin lost its toxicity but still antigenic 
C)  Toxin lost toxicity and antigenicity 
D)  Non of the above

Question 8

The presence of microorganisms in large numbers on a host tissue without host tissue damage:

Accepted Answer

A)  Infection 
B)  Disease 
C)  Colonization 
D)  Transmission

Question 9

All of following are correct as regard endotoxin except:

Accepted Answer

A)  It is protein 
B)  It causes septic shock 
C)  It is part of cell wall of gram negative bacteria 
D)  Heat stable

Question 10

Which of the following statements best describe virus:

Accepted Answer

A)  Obligatory extracellular parasites 
B)  Can be grown on blood agar 
C)  Contain both DNA and RNA 
D)  Can be treated by antibiotics 
E)  Very small in size $ 20.300 \mathrm{~nm} $

Question 11

Microaerophilic bacteria:

Accepted Answer

A)  Require oxygen and oxygen is not toxic to it 
B)  Can grow in presence or absence of oxygen 
C)  Require oxygen at low level 
D)  Does not use oxygen but oxygen is not toxic to it 
E)  Does not use oxygen and oxygen is toxic to it

Question 12

Fimbriae contribute to pathogenicity of bacteria by helping in:

Accepted Answer

A)  Locomotion 
B)  Adhesion 
C)  Release of enzymes 
D)  Antiphagocytic

Question 13

Plasmids are :

Accepted Answer

A)  Cytoplasmic storage granules 
B)  RNA molecules 
C)  Chromosomal DNA 
D)  Carry genetic material essential for bacterial life 
E)  Dispensible

Question 14

Bacterium with flagellum at each end:

Accepted Answer

A)  Monotrichate 
B)  Lophotrichate 
C)  Peritrichate 
D)  Amphitrichate

Question 15

The following are essential structure in bacterial cell:

Accepted Answer

A)  Nuclear body 
B)  Fimbriae 
C)  Inclusion granules 
D)  Plasmid

Question 16

specific bacterial surface proteins help entry into cells:

Accepted Answer

A)  Invasins 
B)  Pili 
C)  Flagella 
D)  Capsule

Question 17

Volutin granules are:

Accepted Answer

A)  Carbohydrates 
B)  Protein 
C)  Polyphosphate 
D)  None of the above

Question 18

Which of the following statement regarding bacterial spores is false:

Accepted Answer

A)  Metabolically inactive 
B)  Don't multiply 
C)  Un able to vegetate again 
D)  Resistant to disinfection and boiling

Question 19

Inclusion granules:

Accepted Answer

A)  Permanent bacterial structure 
B)  Present only in gram negative bacilli 
C)  Reserved nutrients 
D)  Protein in nature

Question 20

Transposons:

Accepted Answer

A)  Genetic elements that contain RNA 
B)  Carry genes that may code for toxin production 
C)  Autonomously replicate 
D)  Mobile DNA sequence that can move from one site to another site. 
E)  B \& D

Exam 1: Pathogenesis-Antibiotic-Structure