Ch 3 - Cell Structure

Question 1

Thin structure that surrounds the cell

Answer 1

cytoplasmic membrane

Question 2

_______ and ________help stabilize membrane by forming ionic bonds with negative charges on the phospholipids

Answer 2

Mg2+ and Ca2+

Question 3

membrane-strengthening agents found in bacteria

Answer 3

sterols and hopanoids

Question 4

what type of phospholipid linkages are in Archae?

Answer 4

Ether

Question 5

what type of phospholipid linkages are in Bacteria and Eukarya?

Answer 5

Ester

Question 6

instead of lipids made of fatty acids, archae have ______

Answer 6

isoprenes

Question 7

transport Driven by the energy in the proton motive

force

Answer 7

Simple transport

Question 8

Chemical modification of the transported

substance driven by phosphoenolpyruvate

Answer 8

group translocation

Question 9

transport where periplasmic binding proteins are involved and energy comes from ATP

Answer 9

ABC transporter

Question 10

Las permease is what type of transport?

Answer 10

simple

Question 11

what type of transport is the Phosphotransferase system?

Answer 11

group transport

Question 12

responsible for exporting proteins through and inserting into prokaryotic membranes

Answer 12

translocases

Question 13

Rigid layer that provides strength to cell wall

Answer 13

peptidoglycan

Question 14

does gram (-) or gram (+) have the peptide link interbridge?

Answer 14

Gram (+)

Question 15

Common to have teichoic acids embedded in the cell wall (G- or G+)?

Answer 15

G+

Question 16

cell wall contains 10% peptidoglycan (G+ or G-)?

Answer 16

G-

Question 17

cell wall contains up to 90% peptidoglycan (G+ or G-)?

Answer 17

G+

Question 18

channels for movement of hydrophilic low-molecular weight substances

Answer 18

porins

Question 19

space located between cytoplasmic and outer membranes

Answer 19

periplasm

Question 20

instead of peptidoglycan, archae have ______

Answer 20

pseudomurein

Question 21

Polysaccharide layers that assist a cell in attachment to surfaces

Answer 21

capsules and slime layers

Question 22

Filamentous protein structures that allow cells to stick to surfaces

Answer 22

fimbriae

Question 23

Filamentous protein structures that allow for motility and attachment to surfaces

Answer 23

pili

Question 24

Highly differentiated cells resistant to heat, harsh chemicals, and radiation

Answer 24

endospores

Question 25

are endospores present in some gram-positive or gram-negative bacteria?

Answer 25

gram-positive

Question 26

directed movement in response to chemical or physical gradients

Answer 26

taxis