HSS 1100 MIDTERM 1 EXAM
QUESTIONS AND ANSWERS ALL
CORRECT
Media designed to promote the growth of a specific kind of bacteria and suppress the
growth of unwanted bacteria are called? - Answer-selective media
A feature resulting in increased virulence of a bacterium is: - Answer-being able to
invade tissues and to multiply
Which of the following factors are responsible for preventing microbial growth on the
skin? - Answer-dryness of skin and inhibitory substances
Resident flora can be found in all the following locations in the human body EXCEPT
the: - Answer-CSF
In which of the following anatomical locations would you expect to find the largest
number of bacteria: - Answer-large intestine
What is the most common entry route of a microbial pathogen into the human body? -
Answer-inhalation
Which of the following is NOT a mechanism of acquired antibiotic resistance? - Answer-
Over prescription of antibiotics
Which of the following vaccine types is considered to be generally the safest - Answer-
recombinant vaccines
Which of the following is visible with the naked eye, unassisted by magnification? -
Answer-a bacterial colony
Which of the following is the correct order for the solutions used in Gram staining?
1. decolorization Ethanol 95%
2. crystal violet
3.Safranin (counter stain)
4. iodine - Answer-crystal violet> iodine> decolorization of Ethanol 95%> Safranin
QUESTIONS AND ANSWERS ALL
CORRECT
Media designed to promote the growth of a specific kind of bacteria and suppress the
growth of unwanted bacteria are called? - Answer-selective media
A feature resulting in increased virulence of a bacterium is: - Answer-being able to
invade tissues and to multiply
Which of the following factors are responsible for preventing microbial growth on the
skin? - Answer-dryness of skin and inhibitory substances
Resident flora can be found in all the following locations in the human body EXCEPT
the: - Answer-CSF
In which of the following anatomical locations would you expect to find the largest
number of bacteria: - Answer-large intestine
What is the most common entry route of a microbial pathogen into the human body? -
Answer-inhalation
Which of the following is NOT a mechanism of acquired antibiotic resistance? - Answer-
Over prescription of antibiotics
Which of the following vaccine types is considered to be generally the safest - Answer-
recombinant vaccines
Which of the following is visible with the naked eye, unassisted by magnification? -
Answer-a bacterial colony
Which of the following is the correct order for the solutions used in Gram staining?
1. decolorization Ethanol 95%
2. crystal violet
3.Safranin (counter stain)
4. iodine - Answer-crystal violet> iodine> decolorization of Ethanol 95%> Safranin
