Micro tools quiz

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  

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