quiz from class
Which type of media contains one or more agents that inhibit the growth of certain microbes, but allows others to grow?
selective media
Bacteria stain more readily with basic dyes because bacteria:
have a negative charge
Bacteria are prokaryotes
True
All bacteria have a cell wall
false
How can we distinguish a prokaryote from a eukaryote?
a.
examine the nucleus to see how the DNA is packaged
b.
examine the makeup of the cell wall
c.
examine the internal structures of the organism
Which term means that the microbe has flagella at opposite ends of the cell?
amphitrichous
Which type of media allows most microbes to grow but are designed to display visible differences among those microbes?
differential media
The “Five I”s” of microbiology are: Inoculation, incubation, isolation, inspection, and _________.
identification
Motility is best observed with a:
Wet mount
Which type of light microscope do we use in the lab?
Bright Field
The Gram stain is a differential type of stain
True
A mixed culture is one that:
contains two or more different types of microbes
Only gram-positive bacteria have an outer membrane (OM)
false
All bacteria have a cell membrane
true
Bacteria have more mitochondria per cell than eukaryotes do
false
A microscope that has a total magnification of 1000 X when using the oil immersion objective lens has an ocular lens of what power?
10x