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Flashcards in Prokaryotes Deck (52)
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1

Name the 2 prokaryotic domains

1. Archaebacteria
2. Eubacteria

2

_____________ are found in harsh environments

Archaebacteria

3

Examples of harsh environments in which archaebacteria are found

Very saline places; hot place

4

What group is referred to as the true bacteria

Eubacteria

5

What cell structures are lacking in prokaryotes?

Organelles

6

Do bacteria have ribosomes like other types of cells?

Yes

7

Describe the genetic material of bacteria. Where is it found?

DNA; it floats in the cytoplasm

8

What surrounds the outside of all bacterial cells?

Capsule

9

Cell walls of true bacteria contain _____________

peptidoglycan

10

Beside the circular chromosome, where else can DNA be found inside a bacterial cell?

cytoplasm

11

What is the size of most bacterial cells?

1-10 um

12

most bacteria act as a _________

decomposer

13

How can some bacteria be harmful?

diseases

14

What does motile mean?

can move

15

Motile bacteria may have one or more _______ for movement

flagella

16

What are bacterial pili?

Hair-like appendages used for reproduction

17

What are pili used for?

gene transfer and sticking to surfaces

18

What is spiral shaped bacteria?

spirillum

19

What is rod shaped bacteria?

bacilli

20

what is round shaped bacteria?

cocci

21

How do the walls of archaebacteria differ from true bacteria?

do not contain peptidoglycan

22

How do the cell membranes of archaebacteria differ from true bacteria?

archaebacteria cell membranes contain hydrocarbon instead of fatty acids

23

do archaebacteria and eubacteria have the same ribosomes?

no

24

Do archaebacteria require oxygen?

no

25

Methanogens live in _______ environments. What is lacking in this environment?

reduced; oxygen

26

How do methanogens get their energy?

methanogenesis

27

What is methanogensis?

the process in which a methanogen uses carbon as an electron accepter to produce methane

28

The _________ live in very salty environments

halophiles

29

___________ live in extremely hot environments

Thermophiles

30

Describe Gram staining

a method of differentiating bacterial species into two large groups by use of stain