Biological Diversity Flashcards
1
Q
What is the function of endospores in bacteria?
A
resistant bodies that contain DNA and small amount of cytoplasm surrounded by durable wall
2
Q
What structure gives bacteria motility?
A
flagella
3
Q
What are the different shapes of bacteria?
A
Cocci (spherical)
Bacilli (rods)
Spirilla (spirals)
4
Q
What type of bacteria has thick walls of peptidoglycan?
A
gram-positive = peptidoglycan
5
Q
What is the cell wall of gram-negative bacteria composed of?
A
90% lipopolysaccharides
10% peptidoglycan
6
Q
What are characteristics of cyanobacteria?
A
photosynthetic, releasing O2; contain accessory pigment phycobilins; have specialized cells called heterocysts that produce nitrogen-fixing enzyme into NH3
