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Flashcards in Just Gram-Bacteria Questions Deck (20)
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1

Postive or Negative?

Gram-Positive

2

Gram-Positive Bacteria Stain Color

Blue/purple

3

Gram-Negative Bacteria Stain Color

Pink/red

4

Peptidoglycan

The primary structure of the cell wall; repeating sugars of N-acetyl glucosamine (NAG) N-acetyl muramic acid (NAM)

5

Teichoic Acid

 polymers of glycerol or ribitol joined by phosphate groups; in the cell wall

6

Wall teichoic acids

go part way through the wall; protrudes above the wall; gram-positive

7

Lipoteichoic acids 

go completely through the wall and link to the plasma membrane; protrudes above the wall; gram-positive

8

M Protein

a virulence factor; it protrudes from the cell wall; it is required for infection; it is highly susceptible to mutations; gram-positive
 

9

Mycolic Acid

found in myobacterium; waxy liquid incorporated into cell wall; makes cell extremely resistant to environmental stress; acts as a barrier against antibiotics & host defenses; gram-positive

10

Periplasmic Space

between plasma and cell wall; smaller in gram-positive

11

Exoenzymes

Enzymes secreted by gram-positive bacteria that inflict damage on host's tissues

12

Unique Features of Gram-Positive Wall

Thick peptidoglycan; Phospholipid molecules; one membrane; Teichoic acid & lipoteichoic acid

13

lipopolysaccharides

compose the outer membrane of Gram-Negative wall; act as a barrier

14

Phospholipid Molecules

compose the outer wall of the Gram-Positive bacterium

15

Teichoic Acids - present or not present in Gram-negative and Gram-positive?

Gram-negative: absent

Gram-positive: present

16

Lipid A

A lipopolysaccharide endotoxin that stimulates fever

17

Unique features of Gram-Negative Wall

Thin peptidoglycan; Lipopolysaccharide; Two membranes; Porins
 

18

Cytoplasmic Membrane

lipid bilayer with proteins embedded;  contains enzymes of respiration and ATP synthesis since prokaryotes lack mitochondria 

19

Name differences between Gram-Positive and Gram-Negative: Peptidoglycan, Teichoic Acid, Lipids, Outer membrane, Toxins, Sensativity to Antibiotics

20

Positive or Negative?

Gram-Negative