Staining Powerpoint

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32 Terms

1

contrast, resolution

stains (dyes) increase _________ and _________

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2

simple stain, complex stain

What are the 2 overall types of stains?

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3

one

How many dyes are used in a simple stain?

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4

more than one

How many dyes are used in a complex stain?

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5

acidic, basic

dyes are either _______ or ________

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6

negative

What charge do acidic dyes have?

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7

positive

What charge do basic dyes have?

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8

help trap the dye to its target

What do mordants do?

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9

slightly negative

What is the charge of a cell’s cytoplasm?

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10

cell’s cytoplasm

What do basic dyes bind to?

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11

crystal violet, malachite green, carbolfuschin, safranin, methylene blue

What are 5 examples of basic dyes?

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12

slightly positive

What is the charge of a cell’s exterior?

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13

cell’s exterior

What do acidic dyes bind to?

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14

nigrosin, india ink, eosin, congo red

What are 4 examples of acidic dyes?

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15

heat, iodine

What are 2 common mordant examples?

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16

differential stains

What is another name for complex stains?

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17

gram stain, acid-fast stain, capsule stain, endospore stain

What are 4 types of differential stains?

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18

gram+ vs. gram-

What is the goal of a gram stain?

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19

mycolic acid vs. no mycolic acid

What is the goal of an acid-fast stain?

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20

identify any capsules

What is the goal of a capsule stain?

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21

find endospores inside vegetative cells

What is the goal of an endospore stain

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22

crystal violet, iodine, alcohol, safranin

What is the primary dye, mordant, decolorizer, and secondary dye of the gram stain?

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23

carbolfuschin, heat, acid alcohol, methylene blue

What is the primary dye, mordant, decolorizer, and secondary dye of the acid-fast stain?

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24

congo red, none, none, acid-fuchsin

What is the primary dye, mordant, decolorizer, and secondary dye of the capsule stain?

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25

malachite green, heat, water, safranin

What is the primary dye, mordant, decolorizer, and secondary dye of the endospore stain?

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26

purple

What color are gram+ cells stained?

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27

pink

What color are gram- cells stained?

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28

carbolfuschin

What labels acid-fast microbes?

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29

methylene blue

What labels non-acid-fast microbes?

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30

malachite green

What labels endospores?

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31

safranin

What labels vegetative cells?

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32

capsule stain

What is the only differential stain that uses both a basic and an acidic stain?

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