Unit 1- 2.2 Comparing Bacteria & Archea

Question 1

what are prokaryotes & what are the two sub types

Answer 1

*unicellular organisms
1. bacteria
2. archea

Question 2

characteristics of prokaryotic cells

Answer 2

1. single celled
2. DNA not surrounded by membrane
3. organelles not surrounded by membrane
4. small (less than 2 micrometers)
5. hard to tell apart

Question 3

describe structure of a prokaryotic cell

Answer 3

-smallest organisms
-cell wall for structural support and protection
*DNA doesn’t form strand, forms ring called plasmid
-some bacteria have flagella

-1/100th DNA of eukaryotic cell

Question 4

characteristics of prokaryotic capsule

Answer 4

-increases ability to cause disease
-allows adherence to surfaces
-protects from being eaten
-contains water to protect from dehydration

Question 5

characteristics of prokaryotic cell wall

Answer 5

-made of peptidoglycan or psedopeptidoglycan

Question 6

characteristic of prokaryotic plasma membrane

Answer 6

controls movement of substances in and out

Question 7

characteristics of prokaryotic nucleoid region

Answer 7

-contains DNA
-several regions & RNA

Question 8

what does DNA in a prokaryotic cell fo

Answer 8

a ring called a plasmid

Question 9

characteristics of prokaryotic pili

Answer 9

-hair like structure on BACTERIA surface
-for movement, attachment, etc.

Question 10

characteristics of prokaryotic flagella

Answer 10

-whip like structure
-used for movement