Bacteria Flashcards
0
Q
what two groups are prokaryotes divided into?
A
bacteria and archaea
1
Q
what do prokaryotes consist of?
A
cell membrane, cytoplasm, ribosomes and a circular chromosome
2
Q
what are saprotrophs?
A
they are heterotrophs that use extracellular digestion to break down and absorb food
3
Q
What is halorhodopsin
A
it is used by halobacterium to prevent dehydration by maintaining a high salt content within the organism
4
Q
what is bacteriorhopsin?
A
it is used by halobacterium to obtain chemical energy. this protein uses sunlight to create a proton gradient
5
Q
Is halobacterium motile?
A
Yes (gas vesicles and flagellum)
6
Q
Adaptation of Anabaena
A
Secretes a gelatinous sheath
7
Q
anabaena reproduction
A
fragmentation
8
Q
bifidobacterium adaptation
A
thick capsule to protect it from harsh environments
