Choose the one answer that fits best. Which of the following
regarding aseptic technique as it is used to work with bacteria, is
NOT correct?
a.
When transferring bacteria to a liquid culture, the opening of
the liquid culture tube is flamed
b.
When transferring bacteria from a plate, it is enough to just
touch the inoculation loop to the bacterial colony to pick up
enough bacteria
c.
Aseptic technique includes sterilizing inoculation tools such as
metal loops by thoroughly wiping it with a cloth dipped in
ethanol
d.
When placing bacteria on a nutrient agar plate, the lid should
be held over the plate to prevent contaminants from falling in
e.
Tools cease to be sterile if they are out in the air too long or
if they have touched something even briefly
Choose the one answer that fits best. Which of the following
regarding bacteria is NOT correct?
a.
Bacteria were not discovered until the 19th century
b.
Movement away from a chemical stimulus is called negative
chemotaxis
c.
Some antibiotics inhibit metabolism of bacterial cells
d.
The bacterial cell wall is the target of certain antibiotics
e.
Gram positive bacteria have cell walls that lack peptidoglycan
and stain purple