7/21/25, 8:49
AM
MBIO 1220 FINAL EXAM QUESTIONS AND ANSWERS WITH
COMPLETE SOLUTIONS VERIFIED GRADED A+ 2025/2026
Terms in this set (333)
He compared two flasks, a straight-
What happened in neck and a bent- neck and boiled
Louis Pasteur's swan- brother in them both and let them sit for
neck flask weeks with free airflow, and noticed
experiment? the straight neck flask was
contaminated while the bent-neck flask
was not.
Who discovered Antonie van Leeuwenhoek
microorganisms?
What are the Gram stain, endospore stain, capsule stain, acid-
differential fast
stains? stain
What helps the Slime layer
1/
22
,7/21/25, 8:49
AM
Streptococcus
mutans stick to
teeth and cause
dental carries?
Gram positive bacteria have a thick layer of
peptidoglycan outside the plasma
What is an membrane and have teichoic acids
important difference
between Gram
Gram negative bacteria have a thin
positive and Gram
peptidoglycan layer and contain an
negative bacteria?
outer and inner plasma
membrane and can also release endotoxins
2/
22
, 7/21/25, 8:49
AM
What is a single polar flagella
monotrichous
flagella?
What is an tuft of flagella at both poles
amphitrichous
flagella?
What is lophotrichous two or more flagella at one or both ends on the
flagella? cell
What is peritrichous flagella all around bacteria
flagella?
When do bacteria To produce energy from sugar when air is
use unavailable
fermentation?
Which elements are C, H, O, N and P
required for nucleic
acid synthesis?
When placed in a The cell will plasmolyze due to a
3/
22
AM
MBIO 1220 FINAL EXAM QUESTIONS AND ANSWERS WITH
COMPLETE SOLUTIONS VERIFIED GRADED A+ 2025/2026
Terms in this set (333)
He compared two flasks, a straight-
What happened in neck and a bent- neck and boiled
Louis Pasteur's swan- brother in them both and let them sit for
neck flask weeks with free airflow, and noticed
experiment? the straight neck flask was
contaminated while the bent-neck flask
was not.
Who discovered Antonie van Leeuwenhoek
microorganisms?
What are the Gram stain, endospore stain, capsule stain, acid-
differential fast
stains? stain
What helps the Slime layer
1/
22
,7/21/25, 8:49
AM
Streptococcus
mutans stick to
teeth and cause
dental carries?
Gram positive bacteria have a thick layer of
peptidoglycan outside the plasma
What is an membrane and have teichoic acids
important difference
between Gram
Gram negative bacteria have a thin
positive and Gram
peptidoglycan layer and contain an
negative bacteria?
outer and inner plasma
membrane and can also release endotoxins
2/
22
, 7/21/25, 8:49
AM
What is a single polar flagella
monotrichous
flagella?
What is an tuft of flagella at both poles
amphitrichous
flagella?
What is lophotrichous two or more flagella at one or both ends on the
flagella? cell
What is peritrichous flagella all around bacteria
flagella?
When do bacteria To produce energy from sugar when air is
use unavailable
fermentation?
Which elements are C, H, O, N and P
required for nucleic
acid synthesis?
When placed in a The cell will plasmolyze due to a
3/
22
