Gram Positive vs Gram Negative

Question 1

teichoic acids

Answer 1

gram positive

Question 2

lipid A

Answer 2

gram negative

Question 3

outer membrane

Answer 3

gram negative

Question 4

lipoteichoic acids

Answer 4

gram positive

Question 5

stain purple

Answer 5

gram positive

Question 6

o side chain

Answer 6

gram negative

Question 7

have thin peptidoglycan layer

Answer 7

gram negative

Question 8

have thick peptidoglycan layer

Answer 8

gram positve

Question 9

periplasmic space

Answer 9

gram negative

Question 10

core polysaccharide

Answer 10

gram negative

Question 11

stain pink

Answer 11

gram negative

Question 12

secrete exoenzymes

Answer 12

gram positive

Question 13

lipopolysaccharide layer

Answer 13

gram negative

Question 14

no teichoic acids

Answer 14

gram negative

Question 15

Which part of the LPS layer (lipopolysaccharide) in gram negative bacteria contributes to bacterial protection from the host?

Answer 15

o-side chain

Question 16

What two antimicrobial agents (that we mentioned in lecture) target peptidoglycan in bacterial cell walls?

Answer 16

lysozomes and penicillin

Question 17

these interrupt NAG and NAM chains

Answer 17

lysozomes

Question 18

this interrupts glycan chain linkage

Answer 18

penicillin

Question 19

What part of mycoplasm’s plasma membranes makes them stronger than regular cell membranes?

Answer 19

sterols

Question 20

what do not have cell walls

Answer 20

mycoplasms and some archeae

Question 21

Which part of the gram negative LPS layer helps to stabilize the outer membrane and also acts as an endotoxin?

Answer 21

lipid A

Question 22

Which of the following structures is diffuse, unorganized, easily removed, and external to the cell wall?

Answer 22

slime layer

Question 23

What does the word amphipathic mean?

What structure is it used to describe?

Answer 23

Has both hydrophilic and hydrophobic parts

Plasma membrane

Question 24

what is characteristic of gram positive bacteria?

Answer 24

Multiple overlapping layers of peptidoglycan

Teichoic acid

Question 25

What part of the bacterial cell membrane stabilizes the membrane structurally?

Answer 25

hopanoid

Question 26

What are two differences between archaeal and bacterial cell membranes?

Answer 26

Archaea- ether linkage Bacteria- ester linkage Archaea- may have monolayer Bacteria- have bilayer

Question 27

What will occur if a prokaryotic cell is placed in a solution that has a higher concentration of solutes (that cannot readily diffuse across the plasma membrane) than does the cytoplasm of the cell?

Answer 27

Water moves out of cell

Question 28

Name two mechanisms where Proton Motive Force is important

Answer 28

photosynthesis and making ATP