Microbiology Flashcards
Which of the following is described as a mutated protein which is responsible for Mad Cow disease and Creutzfeldt-Jakobs disease?
a.
Protozoa
b.
Prion
c.
Virus
d.
Bacteria
= B
Joseph Lister is recognised for
a.
introducing the use of carbonic acid to treat surgical wounds to reduce infections.
b.
discovering Helicobacter pylori causes gastric ulcers.
c.
being the first scientist to use the term “cell”.
d.
introducing hand washing procedures as a method of reducing disease transmission.
= A
Which one of the following statements is true?
a.
Only bacteria and viruses can cause diseases in humans.
b.
Only some microorganisms cause infections in humans.
c.
Bacteria which live on the human body never cause disease.
d.
All microorganisms cause disease in humans.
= B
Bacteria can be classified as gram positive (+) or gram negative (-) based on
a.
cell wall structure
b.
cell shape and size
c.
nuclear material type
d.
disease it causes
= A
Binary fission is
a.
a process of replication undertaken by yeasts.
b.
a process of replication undertaken by procaryotes.
c.
a process of replication undertaken by moulds.
d.
a process of replication undertaken by viruses.
= B
Fimbriae are attachment structures present on the outer surface of
a.
bacteria
b.
viruses
c.
fungi
d.
protozoa
= A
Which type of microorganism produces endospores?
a.
Fungi
b.
Viruses
c.
Bacteria
d.
Prions
=C
Which one of the following best describes procaryotic cells? They consist of
a.
membrane bound organelles surrounded by a cell wall.
b.
a cell membrane surrounding cytoplasm and DNA.
c.
a cell wall and a membrane enclosing cytoplasm.
d.
cell wall, nucleus and cytoplasm.
=C
Which one of the following statements is true?
a.
Viruses possess a nucleus and ribosomes.
b.
Viruses are classified as eucaryotes.
c.
Viruses are unable to replicate outside a host cell.
d.
Viruses and bacteria both possess a cell wall.
= C
A major difference between procaryotes and viruses is
a.
viruses have a nucleus and procaryotes do not.
b.
viruses have a cell wall and procaryotes do not.
c.
procaryotes have a cell wall and viruses do not.
d.
procaryotes have a nucleus and viruses do not.
= C
Which part of the infection cycle involves the virus entering the host cell?
a.
Penetration
b.
Portal of entry
c.
Opportunistic
d.
Attachment
= A
Which of the following microorganisms can be described as consisting of nuclear material surrounded by a capsid and needs to invade a host cell to replicate?
a.
Prion
b.
Virus
c.
Protozoa
d.
Bacteria
= B
Which of the following structures are used by bacteria for attachment to a surface?
a.
Fimbriae
b.
Ribosomes
c.
Flagella
d.
Glycocalyx
= A
Which of the following microorganisms has the characteristics of possessing a cell wall and the absence of a nucleus?
a.
Fungus
b.
Bacteria
c.
Protozoa
d.
Virus
= B
Which of the following microorganisms can only reproduce by invading a host cell?
a.
Prion
b.
Virus
c.
Fungus
d.
Protozoa
= B
