Question 1 (4 points) Saving...Saved Which of the following enzymes is needed to synthesize the DNA molecule from the viral RNA genome; Question 1 options: DNA polymerase RNA polymerase Reverse transcriptase Replicase Question 2 (4 points) Saving...Saved Viruses that persist in the cell and cause recurrent disease are considered; Question 2 options: Oncogenic Cytopathic Latent Resistant Question 3 (4 points) Saving...Saved The capsid is composed of protein subunits called;  Question 3 options: Spikes Protomers Virions Capsomers Question 4 (4 points) Saving...Saving...Saved The envelope of an animal virus is derived from the ………………. Of its host cell Question 4 options: Cell wall Cell membrane Glycocalyx Receptors Question 5 (4 points) Saving...Saved The nucleic acid of a virus is; Question 5 options: DNA only RNA only Both DNA and RNA Either DNA or RNA Question 6 (4 points) Saving...Saved Enveloped viruses carry surface receptors that act as recognition sites for subsequent binding and infection of other cells, these surface receptors are called; Question 6 options: Buds Spikes Fibers Sheath Question 7 (4 points) Saving...Saved Example of virus that alters the genetic set of a host cell and transforms it to cancer cell is; Question 7 options: Herpes Simplex Virus HIV Papillomavirus Flu virus Question 8 (4 points) Saving...Saved Spikes on enveloped viral surfaces helps in; Question 8 options: Replication Entry Integration into host genome Assembly of viral particles Question 9 (4 points) Saving...Saved Endotoxins are found in which of the following organisms;  Question 9 options: G + bacteria G – bacteria Both G + and G – bacteria Some fungi Question 10 (4 points) Saving...Saved Formation of biofilms is mediated by which part of the cell; Question 10 options: Flagella Pili Fimbriae Glycocalyx Question 11 (4 points) Saving...Saved Bacterial endospores function in Question 11 options: reproduction protein synthesis survival storage Question 12 (4 points) Saving...Saved Clostridium botulinum is a virus that causes neurotoxic effects (paralysis) in infected individuals. Question 12 options:TrueFalse Question 13 (4 points) Saving...Saved Viroids are short pieces of RNA with no protein coat found to infect only plants. Question 13 options:TrueFalse Question 14 (4 points) Saving...Saved Gram positive bacteria is characterized by a thin layer of peptidoglycan on its outer membrane Question 14 options:TrueFalse Question 15 (4 points) Saving...Saved A plasmid is a critical piece of DNA necessary for bacterial life. Question 15 options:TrueFalse Question 16 (4 points) Saving...Saved Undifferentiated lymphocytes exist in; Question 16 options: Thymus gland Bone marrow Lymph nodes The liver  Question 17 (4 points) Saving...Saved Lymphocytes differentiate to T and B lymphocytes at Question 17 options: Trachea and Brain Tonsils ...

1. Question 1
(4 points)
Saving...Saved
Which of the following enzymes is needed to synthesize the
DNA molecule from the viral RNA genome;
Question 1 options:
DNA polymerase
RNA polymerase
Reverse transcriptase
Replicase
Question 2
(4 points)
Saving...Saved
Viruses that persist in the cell and cause recurrent disease are
considered;
Question 2 options:
Oncogenic
Cytopathic
Latent

2. Resistant
Question 3
(4 points)
Saving...Saved
The capsid is composed of protein subunits called;
Question 3 options:
Spikes
Protomers
Virions
Capsomers
Question 4
(4 points)
Saving...Saving...Saved
The envelope of an animal virus is derived from the
………………. Of its host cell
Question 4 options:
Cell wall
Cell membrane
Glycocalyx
Receptors

3. Question 5
(4 points)
Saving...Saved
The nucleic acid of a virus is;
Question 5 options:
DNA only
RNA only
Both DNA and RNA
Either DNA or RNA
Question 6
(4 points)
Saving...Saved
Enveloped viruses carry surface receptors that act as
recognition sites for subsequent binding and infection of other
cells, these surface receptors are called;
Question 6 options:
Buds
Spikes
Fibers
Sheath

4. Question 7
(4 points)
Saving...Saved
Example of virus that alters the genetic set of a host cell and
transforms it to cancer cell is;
Question 7 options:
Herpes Simplex Virus
HIV
Papillomavirus
Flu virus
Question 8
(4 points)
Saving...Saved
Spikes on enveloped viral surfaces helps in;
Question 8 options:
Replication
Entry
Integration into host genome
Assembly of viral particles

5. Question 9
(4 points)
Saving...Saved
Endotoxins are found in which of the following organisms;
Question 9 options:
G + bacteria
G – bacteria
Both G + and G – bacteria
Some fungi
Question 10
(4 points)
Saving...Saved
Formation of biofilms is mediated by which part of the cell;
Question 10 options:
Flagella
Pili
Fimbriae
Glycocalyx
Question 11
(4 points)

6. Saving...Saved
Bacterial endospores function in
Question 11 options:
reproduction
protein synthesis
survival
storage
Question 12
(4 points)
Saving...Saved
Clostridium botulinum is a virus that causes neurotoxic effects
(paralysis) in infected individuals.
Question 12 options:TrueFalse
Question 13
(4 points)
Saving...Saved
Viroids are short pieces of RNA with no protein coat found to
infect only plants.
Question 13 options:TrueFalse
Question 14

7. (4 points)
Saving...Saved
Gram positive bacteria is characterized by a thin layer of
peptidoglycan on its outer membrane
Question 14 options:TrueFalse
Question 15
(4 points)
Saving...Saved
A plasmid is a critical piece of DNA necessary for bacterial
life.
Question 15 options:TrueFalse
Question 16
(4 points)
Saving...Saved
Undifferentiated lymphocytes exist in;
Question 16 options:
Thymus gland
Bone marrow
Lymph nodes
The liver

8. Question 17
(4 points)
Saving...Saved
Lymphocytes differentiate to T and B lymphocytes at
Question 17 options:
Trachea and Brain
Tonsils and blood
Thymus and Bone marrow
Liver and heart
Question 18
(4 points)
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What type of immune cell first detects and processes antigens
and foreign molecules;
Question 18 options:
Antigen presenting cells (APCs)
T lymphocytes
B lymphocytes
None of the above
Question 19

9. (4 points)
Saving...Saved
A molecule that does not initiate an immune response known as
Question 19 options:
Immune misleader
Epitope
Immunoglobulin
Hapten
Question 20
(4 points)
Saving...Saved
A molecule that initiates an immune response with an active site
for immune cell recognition is known as
Question 20 options:
Immune misleader
Epitope
Immunoglobulin
Hapten
Question 21
(4 points)

10. Saving...Saved
Which of the following immunoglobulin classes is able to cross
the placenta
Question 21 options:
IgG
IgA
IgM
IgE
Question 22
(4 points)
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Which of the following immunoglobulin classes is secreted at
mucus membranes (salivary glands, intestine, nasal membrane,
genitourinary tract…etc)
Question 22 options:
IgG
IgA
IgE
IgM
Question 23

11. (4 points)
Saving...Saved
Which of the following immunoglobulin classes is associated
with basophiles and mast cells in blood and mediates allergic
reactions
Question 23 options:
IgG
IgA
IgE
IgD
Question 24
(4 points)
Saving...Saved
Immunoglobulins are produced by which of the following cells;
Question 24 options:
T lymphocytes
B lymphocytes
Antigen presenting cells
Neutrophils
Question 25

12. (4 points)
Saving...Saved
Which of the following is an example of innate immune system;
Question 25 options:
B lymphocytes
White blood cells
Skin, Saliva, Tears, and stomach acid
The spleen