Question 1

Describe the causative agents and transmission of tuberculosis.

Accepted Answer

Tuberculosis is caused by the bacterium

Question 2

Which category of disease classification is described as having more cases than expected in a given period of time?

Accepted Answer

A) epidemic 
B) outbreak 
C) pandemic 
D) None of these 
E) opportunistic infection 
A) epidemic 
B) outbreak 
C) pandemic 
D) None of these 
E) opportunistic infection

Question 3

When was the first documented case of AIDS in the United States?

Accepted Answer

A) 1884 
B) 1924 
C) 1959 
D) 1969 
E) 1982 
A) 1884 
B) 1924 
C) 1959 
D) 1969 
E) 1982

Question 4

HIV/AIDS and tuberculosis are both examples of current

Accepted Answer

A) outbreaks. 
B) epidemics. 
C) pandemics. 
D) opportunistic infections. 
E) acute infections. 
A) outbreaks. 
B) epidemics. 
C) pandemics. 
D) opportunistic infections. 
E) acute infections.

Question 5

The HIV virus contains a genome composed of

Accepted Answer

A) double stranded DNA. 
B) single stranded RNA, 
C) double stranded RNA 
D) single stranded RNA. 
E) one strand of DNA and one strand of RNA. 
A) double stranded DNA. 
B) single stranded RNA, 
C) double stranded RNA 
D) single stranded RNA. 
E) one strand of DNA and one strand of RNA.

Question 6

An emerging disease is one that

Accepted Answer

A) is newly recognized in the last two decades. 
B) has suddenly caused an epidemic. 
C) is now present on multiple continents. 
D) can infect both humans and animals. 
E) can be transmitted in multiple ways. 
A) is newly recognized in the last two decades. 
B) has suddenly caused an epidemic. 
C) is now present on multiple continents. 
D) can infect both humans and animals. 
E) can be transmitted in multiple ways.

Question 7

List and explain the events that occur during the reproductive cycle of an HIV virus.

Accepted Answer

1.Attachment: HIV binds to the plasma me

Question 8

Which of the following is important for the attachment stage of the HIV life cycle?

Accepted Answer

A) acquisition of an envelope from the host 
B) gp120 spike proteins 
C) cleavage of the proteins by protease 
D) integration of the viral DNA into the host genome 
E) uncoating 
A) acquisition of an envelope from the host 
B) gp120 spike proteins 
C) cleavage of the proteins by protease 
D) integration of the viral DNA into the host genome 
E) uncoating

Question 9

In the "kitchen-sink model" for AIDS,what does the sink's drain represent?

Accepted Answer

A) the destruction of CD4 T-cells by the virus 
B) the production of new CD4 T-cells 
C) the amplification of virus in the blood 
D) the destruction of virus by the immune system 
E) the wide variety of possible opportunistic infections 
A) the destruction of CD4 T-cells by the virus 
B) the production of new CD4 T-cells 
C) the amplification of virus in the blood 
D) the destruction of virus by the immune system 
E) the wide variety of possible opportunistic infections

Question 10

In which phase of an HIV infection is the person typically asymptomatic?

Accepted Answer

A) acute phase (
A)  
B) chronic phase (
B)  
C) AIDS (
C)  
D) AIDS (
D)  
E) terminal phase 
A) acute phase (
A)  
B) chronic phase (
B)  
C) AIDS (
C)  
D) AIDS (
D)  
E) terminal phase

Question 11

Streptococcus is now considered to be a reemerging pathogen.

Accepted Answer

A) True 
 B)False

Question 12

What type of cells does HIV infect?

Accepted Answer

A) helper T cells 
B) B cells 
C) liver cells 
D) epithelial cells 
E) basophils 
A) helper T cells 
B) B cells 
C) liver cells 
D) epithelial cells 
E) basophils

Question 13

People can become resistant to antibiotics.

Accepted Answer

A) True 
 B)False

Question 14

A disease is called an epidemic if people all over the world have the same disease.

Accepted Answer

A) True 
 B)False

Question 15

How is malaria spread?

Accepted Answer

A) via airborne droplets 
B) by blood transfusions 
C) sexual intercourse 
D) breast feeding 
E) mosquitoes 
A) via airborne droplets 
B) by blood transfusions 
C) sexual intercourse 
D) breast feeding 
E) mosquitoes

Question 16

The drugs that treat malaria can be used prophylactically,or before infection.

Accepted Answer

A) True 
 B)False

Question 17

Where does the life cycle of the Plasmodium protist take place?

Accepted Answer

A) mosquito 
B) human 
C) both mosquito and human 
D) snails 
E) pigs 
A) mosquito 
B) human 
C) both mosquito and human 
D) snails 
E) pigs

Question 18

How is Mycobacterium tuberculosis spread?

Accepted Answer

A) via airborne droplets 
B) contaminated food or water 
C) sexual intercourse 
D) IV drug abuse 
E) blood transfusions 
A) via airborne droplets 
B) contaminated food or water 
C) sexual intercourse 
D) IV drug abuse 
E) blood transfusions

Question 19

Why would an HIV test be negative within the first 2-3 weeks of an HIV infection?

Accepted Answer

A) because there is no HIV virus in the blood 
B) because there are no detectable levels of HIV antibodies in the blood 
C) because there are no symptoms 
D) because the CD4 T-cell count is above 500 cells/mm3 
E) because there are no opportunistic infections yet 
A) because there is no HIV virus in the blood 
B) because there are no detectable levels of HIV antibodies in the blood 
C) because there are no symptoms 
D) because the CD4 T-cell count is above 500 cells/mm3 
E) because there are no opportunistic infections yet

Exam 8: Biology of Infectious Diseases

Describe the causative agents and transmission of tuberculosis.

Which category of disease classification is described as having more cases than expected in a given period of time?

When was the first documented case of AIDS in the United States?

HIV/AIDS and tuberculosis are both examples of current

The HIV virus contains a genome composed of

An emerging disease is one that

List and explain the events that occur during the reproductive cycle of an HIV virus.

Which of the following is important for the attachment stage of the HIV life cycle?

In the "kitchen-sink model" for AIDS,what does the sink's drain represent?

In which phase of an HIV infection is the person typically asymptomatic?

Streptococcus is now considered to be a reemerging pathogen.

What type of cells does HIV infect?

People can become resistant to antibiotics.

A disease is called an epidemic if people all over the world have the same disease.

How is malaria spread?

The drugs that treat malaria can be used prophylactically,or before infection.

Where does the life cycle of the Plasmodium protist take place?

How is Mycobacterium tuberculosis spread?

Why would an HIV test be negative within the first 2-3 weeks of an HIV infection?

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