MICROBIOLOGY LAB FINAL EXAM HCC
HAROLD KAY EXAM WITH CORRECT
ACTUAL QUESTIONS AND CORRECTLY
WELL DEFINED ANSWERS
, Why do we culture bacteria ? - ANSWERTo isolate , identify and study microorganisms
Stages of lysogeny - ANSWERAttachment (adsorption) , entry (penetration) , uncoat (no
uncoat in bacteriophage of animal host cells) and integration
Know the three modes/types of genetic transfer between bacteria -
ANSWERTransformation- when bacteria assimilates genetic material from its
environment (indirect contact )
What do you understand by opportunistic pathogens ? - ANSWERNormal inhabitants of
the human body that are non pathogenic but become pathogenic but become
pathogenic when immune system is compromised
What is normal flora? - ANSWERThe native microbial forms that an individual harbors.
Non pathogenic
Give three examples of opportunistic pathogen's - ANSWERCandida albicans,
Pseudonomas aeruginosa, staphylococcus aureus
Examples of true pathogens - ANSWERInfluenza virus, plague bacillus and malaria
protozoan
Know four pathogenic viruses and diseases they cause in humans - ANSWERHuman
papilloma virus - cervical cancer
Human immunodeficiency virus - acquired immunodeficiency syndrome
Hepatitis C - liver cancer
Norwalk virus - acute gastroenteritis
What is the importance of antibiotic sensitivity testing? - ANSWERTo determine the
correct antibiotic for a bacterial infection(prescription)
Gram-positive stain - ANSWERStains purple
Gram-negative stain - ANSWERStains red
Negative stain - ANSWERStains the silhouette of the background of the bacteria
Acid-fast stain - ANSWERRed cells are acid-fast, blue cells are non-acid fast
HAROLD KAY EXAM WITH CORRECT
ACTUAL QUESTIONS AND CORRECTLY
WELL DEFINED ANSWERS
, Why do we culture bacteria ? - ANSWERTo isolate , identify and study microorganisms
Stages of lysogeny - ANSWERAttachment (adsorption) , entry (penetration) , uncoat (no
uncoat in bacteriophage of animal host cells) and integration
Know the three modes/types of genetic transfer between bacteria -
ANSWERTransformation- when bacteria assimilates genetic material from its
environment (indirect contact )
What do you understand by opportunistic pathogens ? - ANSWERNormal inhabitants of
the human body that are non pathogenic but become pathogenic but become
pathogenic when immune system is compromised
What is normal flora? - ANSWERThe native microbial forms that an individual harbors.
Non pathogenic
Give three examples of opportunistic pathogen's - ANSWERCandida albicans,
Pseudonomas aeruginosa, staphylococcus aureus
Examples of true pathogens - ANSWERInfluenza virus, plague bacillus and malaria
protozoan
Know four pathogenic viruses and diseases they cause in humans - ANSWERHuman
papilloma virus - cervical cancer
Human immunodeficiency virus - acquired immunodeficiency syndrome
Hepatitis C - liver cancer
Norwalk virus - acute gastroenteritis
What is the importance of antibiotic sensitivity testing? - ANSWERTo determine the
correct antibiotic for a bacterial infection(prescription)
Gram-positive stain - ANSWERStains purple
Gram-negative stain - ANSWERStains red
Negative stain - ANSWERStains the silhouette of the background of the bacteria
Acid-fast stain - ANSWERRed cells are acid-fast, blue cells are non-acid fast
