Micro tools quiz

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16 Terms

1

Which type of media contains one or more agents that inhibit the growth of certain microbes, but allows others to grow?

selective media  

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2

Bacteria stain more readily with basic dyes because bacteria:

 have a negative charge  


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3

Bacteria are prokaryotes

True

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4

All bacteria have a cell wall

false

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5

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    

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6

Which term means that the microbe has flagella at opposite ends of the cell?

amphitrichous

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7

Which type of media allows most microbes to grow but are designed to display visible differences among those microbes?

differential media     

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8

The “Five I”s” of microbiology are:  Inoculation, incubation, isolation, inspection, and _________.

identification

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9

Motility is best observed with a:

Wet mount

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10

Which type of light microscope do we use in the lab?

Bright Field

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11

The Gram stain is a differential type of stain

True

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12

A mixed culture is one that:

contains two or more different types of microbes

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13

Only gram-positive bacteria have an outer membrane (OM)

false

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14

All bacteria have a cell membrane

true

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15

Bacteria have more mitochondria per cell than eukaryotes do

false

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16

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

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