Ch 3 - Cell Structure Flashcards Preview

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Flashcards in Ch 3 - Cell Structure Deck (26)
1

Thin structure that surrounds the cell

cytoplasmic membrane

2

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

Mg2+ and Ca2+

3

membrane-strengthening agents found in bacteria

sterols and hopanoids

4

what type of phospholipid linkages are in Archae?

Ether

5

what type of phospholipid linkages are in Bacteria and Eukarya?

Ester

6

instead of lipids made of fatty acids, archae have ______

isoprenes

7

transport Driven by the energy in the proton motive
force

Simple transport

8

Chemical modification of the transported
substance driven by phosphoenolpyruvate

group translocation

9

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

ABC transporter

10

Las permease is what type of transport?

simple

11

what type of transport is the Phosphotransferase system?

group transport

12

responsible for exporting proteins through and inserting into prokaryotic membranes

translocases

13

Rigid layer that provides strength to cell wall

peptidoglycan

14

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

Gram (+)

15

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

G+

16

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

G-

17

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

G+

18

channels for movement of hydrophilic low-molecular weight substances

porins

19

space located between cytoplasmic and outer membranes

periplasm

20

instead of peptidoglycan, archae have ______

pseudomurein

21

Polysaccharide layers that assist a cell in attachment to surfaces

capsules and slime layers

22

Filamentous protein structures that allow cells to stick to surfaces

fimbriae

23

Filamentous protein structures that allow for motility and attachment to surfaces

pili

24

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

endospores

25

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

gram-positive

26

directed movement in response to chemical or physical gradients

taxis