Chap 4 -2 Flashcards Preview

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Flashcards in Chap 4 -2 Deck (16):
1

What are external prokaryotic cell structures?

cell wall of peptidoglycan
capsule
pili (pilus, singular)
One + flagella

2

What are Eukaryotic cells?

larger 10-100um
complexity in compartmentalization
membrane bound regions - organelles

3

What are plasmids?

small circular DNA molecules

4

Organelle's outer membrane allows the organelle to?

each have specialized function
which allows activities to occur simultaneously (cellular metabolism)

5

Domain Eukarya consists of?

Plantae
Animalia
Protista
Fungi

6

Which Eukaryotic structures are only found in plants?

cell wall
chloroplast

7

Centrioles are only found in what?

animals

8

The Nucleus separates what from what?

DNA from cytoplasm

9

What does the nucleus do?

protects and controls access
organizes and copies for cell division

10

Ribosomes consists of?

rRNA & proteins: 2 subunits

11

What is the Endomembrane system?

membranous organelles working together that manufacture, distribute, ship and or store cellular products (proteins and lipids)

12

What is the secretory pathway?

a series of steps a cell uses to move proteins out

13

What is the endoplasmic reticulum?

an extension of the nuclear envelope
(extensive, two regions)

14

What is rough endoplasmic reticulum?

flattened sacs studded with ribosomes that produce polypeptides

15

What is the function of rough endoplasmic reticulum?

to modify polypeptides for functioning as membrane proteins

16

What are secretory proteins?

Digestive enzymes, tears, hormones