Question

Part 1) Consider the colonies growing on this sorbitol MacConkey agar plate. Which component of the medium is being metabolized by the ones that appear colorless?
A.  neutral red

B.  sodium chloride

C.  agar

D.  peptone

E.  sorbitol

Following is reference from book: Pictures 1 & 2



Part 2)  Which of the following is an example of an anabolic reaction?
A.  glycolysis

B.  TCA cycle

C.  Calvin cycle

D.  pentose phosphate pathway

Part 3) How do Bdellovibrio cells escape host cells?

A.  Bdellovibrio cells cause host cells to lyse.

B.  Bdellovibrio cells use exocytosis to escape the host cell.

C.  Bdellovibrio cells are released by phagosomes.

D.  Bdellovibrio cells use long actin tails to escape the host cell.

Following is reference from book: Pictures 3 & 4



Part 4) In the case of an outbreak of a disease such as severe acute respiratory syndrome (SARS), why is it so important to identify the index patient instead of just treating the patients who have already become infected? Choose one or more answers.

A.to determine the exact location where the infection occurred

B.to isolate and treat other patients who might be carriers

C.to track the spread of the disease

D.to begin vaccinating against the pathogen

Following is reference from the book: Picture 5



Part 5) Match the disease with its current designation as endemic, epidemic, or pandemic. 

Shigella

Chickenpox

Lyme disease

West Nile

Avian Flu H5N1

Ebola

HIV/AIDS

Answer 1

Answer:

cool

Explanation:

Answer 2

Part 1) Consider the colonies growing on this sorbitol MacConkey agar plate. Which component of the medium is being metabolized by the ones that appear colorless?

Answer:

E) sorbitol

Explanation

Because gram negative bacteria cannot ferment sorbitol.

Part 2) Which of the following is an example of an anabolic reaction?

Answer:

B)  TCA cycle

Part 3) How do Bdellovibrio cells escape host cells?

Answer:

A) Bdellovibrio cells cause host cells to lyse.

Part 4) In the case of an outbreak of a disease such as severe acute respiratory syndrome (SARS), why is it so important to identify the index patient instead of just treating the patients who have already become infected? Choose one or more answers.

Answer:

A) to determine the exact location where the infection occurred

Part 5) Match the disease with its current designation as endemic, epidemic, or pandemic.  

Shigella is pandemic disease

Chickenpox is endemic disease

lyme disease is an epidemic disease

west nile is an epidemic disease

Avian Flu H5N1 is pandemic disease

Ebola is an epidemic disease

HIV/AIDS is an epidemic disease