Algae & Bacteria Culture – Microbiology Exam
The key terms of Microbiology Exam include Agar, Cell, Medium, Culture, Algae, Bacteria, Negative, Bacterium, Coccus, negative stain, general medium, several-to-many flagella, lophotrichous, liquid microbial culture, Bioreactor, optical microscopy technique, mycobacteria.
Agar comes from:
bacteria.
brown algae.
golden algae.
red algae.- correct
green algae.
A bacterium is called a ________ if it’s spherical.
coccobacillus
spirillum
Coccus – correct
vibrio
bacillus
A negative stain doesn’t stick to a cell because the colored portion has a _____ charge to the cell’s ______ charge.
negative, negative – correct
positive, positive
positive, negative
negative, positive
When a medium grows many different kinds of bacteria, it is called a:
chemically-defined medium
differential medium
general medium – correct
selective medium
complex medium
Which is the term used to describe a bacterium with several-to-many flagella, all at one end of the cell?
amphitrichous
lophotrichous – correct
monotrichous
peritrichous
Place the following steps in the correct order:
1- staining 2- making a smear 3- fixing
3 -> 2 -> 1
2 -> 3 -> 1- correct
1 -> 3 -> 2
1 -> 2 -> 3
Which of the following is not an optical microscopy technique?
atomic force – correct
dark field
confocal
brightfield
fluorescent
Which of the following is used to grow the largest amount of a liquid microbial culture?
tube
flask
Bioreactor – correct
plate
Which of these stains is specific for mycobacteria?
Gram
negative
capsule
spore
acid-fast – correct
Place the steps of the Gram stain in the correct order:
1 – alcohol 2 – crystal violet 3 – safranin 4 – iodine
1 -> 2 -> 3 -> 4
4 -> 3 -> 2 -> 1
2 -> 1 -> 4 -> 3
1 -> 3 -> 2 -> 4
2 -> 4 -> 1 -> 3 – correct
Which of the following plate techniques involves thoroughly mixing the bacterial sample with liquid agar?
streak plate
pour plate – correct
spread plate
Agar comes from:
bacteria.
brown algae.
golden algae.
red algae.- correct
green algae.
A bacterium is called a ________ if it’s spherical.
coccobacillus
spirillum
Coccus – correct
vibrio
bacillus
A negative stain doesn’t stick to a cell because the colored portion has a _____ charge to the cell’s ______ charge.
negative, negative – correct
positive, positive
positive, negative
negative, positive
When a medium grows many different kinds of bacteria, it is called a:
chemically-defined medium
differential medium
general medium – correct
selective medium
complex medium