GTC Microbiology Final Review! | (complete
solutions) Exam| ASSURED SUCCESS |GRADE A+!!
|Questions & Answers 100% Verified 2025 latest
update
A culture and a streak plate of the wound shows: Staphylococcus
epidermidis and Staphylococcus aureus. Which is likely the
pathogen? - . . ANSWER ✓✓ Staphylococcus aureus- because
Staphylococcus epidermidis is usually non-pathogenic except in
immunocompromised patients
A drug has a low selective toxicity. Is that a good or bad thing? - .
. ANSWER ✓✓ Selective toxicity is the ability of a chemical or
drug to kill a microorganism without harming its host, therefore,
a low selective toxicity is a bad thing.
A skin wound fills with pus. Which bacteria are common
concerns? - . . ANSWER ✓✓ Staph and Strep
A specific disease causes a typical triad of signs: ataxia, fever
and rash. This combination of signs could be referred to as a
____________ - . . ANSWER ✓✓ syndrome
acetylCoa - . . ANSWER ✓✓ Forms when pyruvic acid reacts with
the enzyme CoA
,acid fast - . . ANSWER ✓✓ cell wall is 60% fat (mycolic acid-
waxy fat) will stain positive with gram reaction. Ex. Zeihl-
Neelsen stain and mycobacteria
acidity - . . ANSWER ✓✓ measured on the pH scale-
concentration of H+
acidophile - . . ANSWER ✓✓ an organism that grows best at low
pH; typically below pH 6
acidophile - . . ANSWER ✓✓ an organism that grows best at low
pH; typically below pH 6
active transport - . . ANSWER ✓✓ the movement of chemical
substances, usually across the cell membrane, against a
concentration gradient; requires cells to use energy
aerobe - . . ANSWER ✓✓ a microorganism that can live and
grow only in the presence of oxygen
agar - . . ANSWER ✓✓ a gel-like polysaccharide compound used
for culturing microbes; extracted from certain red algae
,alcohol - . . ANSWER ✓✓ a substituted hydrocarbon that
contains one or more hydroxyl groups
alkalinophile - . . ANSWER ✓✓ An organism that grows optimally
at high pH (alkaline conditions). The typical pH range for
alkaliphiles is 8 - 11. They grow poorly or not at all at a pH below
7.
alkalinophile - . . ANSWER ✓✓ Bacteria that inhabit alkaline
soils and water and can continue to grow at a pH of 11.5
alkylating agents - . . ANSWER ✓✓ Synthetic chemicals
containing alkyl groups that attack DNA, causing strand breaks
amino acid - . . ANSWER ✓✓ basic building blocks of protein
molecules
Aminoglycosides are effective against gram _____ bacteria - . .
ANSWER ✓✓ negative
Amphitrichous - . . ANSWER ✓✓ flagella at both ends
amphitrichous - . . ANSWER ✓✓ The presence of flagella at both
ends of the bacterial cell
, An alcoholic solution of a substance is called a - . . ANSWER ✓✓
tincture
anaerobe - . . ANSWER ✓✓ a microorganism having the ability to
live without oxygen
Antibiotic testing shows that the Staphylococcus aureus is
MRSA. What does that mean? - . . ANSWER ✓✓ that it is
Methicillin resistant Staphylococcus aureus.
antiseptic - . . ANSWER ✓✓ a substance that destroys micro-
organisms that carry disease without harming body tissues
Approximately how many amino acids are there? - . . ANSWER
✓✓ 21
archaea - . . ANSWER ✓✓ Domain of unicellular prokaryotes
that have cell walls that do not contain peptidoglycan. Grow in
extreme environments (salt lakes).
Are acid fast bacteria rapidly growing? - . . ANSWER ✓✓ No.
They are slow growing because it is difficult for nutrients to
make it thorough the waxy lipid wall.
solutions) Exam| ASSURED SUCCESS |GRADE A+!!
|Questions & Answers 100% Verified 2025 latest
update
A culture and a streak plate of the wound shows: Staphylococcus
epidermidis and Staphylococcus aureus. Which is likely the
pathogen? - . . ANSWER ✓✓ Staphylococcus aureus- because
Staphylococcus epidermidis is usually non-pathogenic except in
immunocompromised patients
A drug has a low selective toxicity. Is that a good or bad thing? - .
. ANSWER ✓✓ Selective toxicity is the ability of a chemical or
drug to kill a microorganism without harming its host, therefore,
a low selective toxicity is a bad thing.
A skin wound fills with pus. Which bacteria are common
concerns? - . . ANSWER ✓✓ Staph and Strep
A specific disease causes a typical triad of signs: ataxia, fever
and rash. This combination of signs could be referred to as a
____________ - . . ANSWER ✓✓ syndrome
acetylCoa - . . ANSWER ✓✓ Forms when pyruvic acid reacts with
the enzyme CoA
,acid fast - . . ANSWER ✓✓ cell wall is 60% fat (mycolic acid-
waxy fat) will stain positive with gram reaction. Ex. Zeihl-
Neelsen stain and mycobacteria
acidity - . . ANSWER ✓✓ measured on the pH scale-
concentration of H+
acidophile - . . ANSWER ✓✓ an organism that grows best at low
pH; typically below pH 6
acidophile - . . ANSWER ✓✓ an organism that grows best at low
pH; typically below pH 6
active transport - . . ANSWER ✓✓ the movement of chemical
substances, usually across the cell membrane, against a
concentration gradient; requires cells to use energy
aerobe - . . ANSWER ✓✓ a microorganism that can live and
grow only in the presence of oxygen
agar - . . ANSWER ✓✓ a gel-like polysaccharide compound used
for culturing microbes; extracted from certain red algae
,alcohol - . . ANSWER ✓✓ a substituted hydrocarbon that
contains one or more hydroxyl groups
alkalinophile - . . ANSWER ✓✓ An organism that grows optimally
at high pH (alkaline conditions). The typical pH range for
alkaliphiles is 8 - 11. They grow poorly or not at all at a pH below
7.
alkalinophile - . . ANSWER ✓✓ Bacteria that inhabit alkaline
soils and water and can continue to grow at a pH of 11.5
alkylating agents - . . ANSWER ✓✓ Synthetic chemicals
containing alkyl groups that attack DNA, causing strand breaks
amino acid - . . ANSWER ✓✓ basic building blocks of protein
molecules
Aminoglycosides are effective against gram _____ bacteria - . .
ANSWER ✓✓ negative
Amphitrichous - . . ANSWER ✓✓ flagella at both ends
amphitrichous - . . ANSWER ✓✓ The presence of flagella at both
ends of the bacterial cell
, An alcoholic solution of a substance is called a - . . ANSWER ✓✓
tincture
anaerobe - . . ANSWER ✓✓ a microorganism having the ability to
live without oxygen
Antibiotic testing shows that the Staphylococcus aureus is
MRSA. What does that mean? - . . ANSWER ✓✓ that it is
Methicillin resistant Staphylococcus aureus.
antiseptic - . . ANSWER ✓✓ a substance that destroys micro-
organisms that carry disease without harming body tissues
Approximately how many amino acids are there? - . . ANSWER
✓✓ 21
archaea - . . ANSWER ✓✓ Domain of unicellular prokaryotes
that have cell walls that do not contain peptidoglycan. Grow in
extreme environments (salt lakes).
Are acid fast bacteria rapidly growing? - . . ANSWER ✓✓ No.
They are slow growing because it is difficult for nutrients to
make it thorough the waxy lipid wall.
