Prokaryotes Flashcards
1
Q
Prokaryotes…
A
- include the domains Bacteria and archaea
- are microscopic
- tremendous numbers
- thrive almost everywhere
2
Q
Prokaryotic cells have a variety of shapes…(3)
A
Spheres (cocci)
Rods (bacilli)
Spirals
3
Q
Archaea contain…
A
Polysaccharides and proteins but lack peptidoycan
4
Q
Bacterial cell walls contain…
A
Peptidoycan
5
Q
What are eukaryote cell walls, if present?
A
Cellulose or chitin
6
Q
Frimbriae
A
Hairlike appendages that help cells adhere to other cells or substrate
7
Q
Capsule
A
Sticky layer of polysaccharide or protein that can help cell adherence and/or evade a host’s immune system
8
Q
Sex pilus
A
Appendage that facilitates conjugation
9
Q
Flagella
A
Organs used by most motile bacteria for propulsion
10
Q
Taxis
A
The ability (for bacteria in a heterogenous environment) to move toward or away from certain stimuli
11
Q
Most life on the planet is…
A
Unicellular prokaryotes
