Biology Chapter 27 Prokaryotes

Front 1

prokaryotes thrive ____ including....

Back 1

everywhere,places to acidic,salty,cold,hot

Front 2

what contribute to prokaryotic success?

Back 2

structual, functional, and genetic adaptations

Front 3

most prokaryotes are __celluar

Back 3

unicellular, a few species form colonies

Front 4

what are the three common shapes of prokaryotic cells?

Back 4

spheres(cocci),rods(bacilli) and spirals

Front 5

one of the most important features of nearly all prokaryotic cells is their

Back 5

cell wall

Front 6

cell wall provides?

Back 6

maintains cell shape, provides physical protection, prevents the cell from bursting in a hypo tonic environment.

Front 7

bacterial species can be classified into which two groups?

Back 7

gram positive, gram negative

Front 8

the difference between gram positive and gram negative is?

Back 8

gram positive bacteria have a cell wall with a large amount of peptidoglycon.

gram negative have less peptidoglycon and it is located between the plasma membrane and an outer membrane.

Front 9

a sticky layer of polysaccharides and/or protein is called?

Back 9

a capsule

Front 10

fimbraiae and pili allow prokaryotes to?

Back 10

allows them to stick to their substrate or other individuals in a colony

Front 11

most motile bacteria propel themselves by?

Back 11

flagella

Front 12

taxis

Back 12

the ability to move toward or away from a certain stimuli

Front 13

internal and genomic organization of prokaryotic cells?

Back 13

are much simpler than eukaryotic cells, they do not have organelles

Front 14

some prokaryotes have specialized membranes that perform? give ex.

Back 14

metabolic functions
ex. aerobic prokaryote have respiratory memembrane
ex. photosenthic prokaryote have thylakoid membrane

Front 15

in prokarytoic cells dna is?

Back 15

not surrounded by a membrane and is located in a nucleoid region

Front 16

prokaryotes reproduced by ? and how fast?

Back 16

binary fission, 20-30mins

Front 17

endospore

Back 17

prokaryotes form endospore which can remain viable in harsh conditions for centuries

Front 18

autotroph

Back 18

can make own food

Front 19

heterotroph

Back 19

can not make own food

Front 20

obligate aerobes

Back 20

require oxygen

Front 21

facultative anaerobes

Back 21

can survive with or without oxygen

Front 22

obligate anaerobes

Back 22

are poisoned by oxygen

Front 23

cooperation between prokaryotes

Back 23

allows them to use environmental resources they could not use as individual cells

Front 24

anabanea

Back 24

photosynthetic cells and nitrogen fixing cells exchange metabolic products

Front 25

biofilms

Back 25

where cooperation in colonies occurs for bacertia

Front 26

methanogens

Back 26

live in anaerobic swamps and marshes, produce methane as a waste product

Front 27

halophiles

Back 27

live in high salt environments

Front 28

thermophiles

Back 28

thrive in very hot envirnoments

Front 29

prokaryotes play a crucial role in ?

Back 29

the biosphere, without prokaryotes all life on earth would be in jeoparyd of extinction

Front 30

prokaryotes play a major role in ?

Back 30

recycling of chemical elements between the living and nonliving components of ecosystems