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Flashcards in Biology - Unit 3, Monerans Deck (15):
1

What are archaebacteria?

A group of monerans that live in unusually harsh environments; ancient bacteria

2

What are eubacteria?

All the organisms traditionally known as bacteria; true bacteria

3

What are methanogens?

Archaebacteria that produce methane.

4

What are thermoacidophiles?

Archaebacteria that love in hot acidic waters.

5

What are chemosynthesizers?

Archaebacteria that use inorganic compounds as an energy source. (deep-sea hot springs formed by volcanic vents on the ocean floor)

6

What are extreme halophiles?

Archaebacteria that live in extremely salty conditions.

7

What are gram-positive bacterias?

Bacteria with thick walls made of a protein-sugar complex that takes on the purple colour during gram staining.

8

What are gram-negative bacteria?

Bacteria that have an extra layer of lipid on the outside of the cell wall and appear pink after gram staining.

9

What are cyanobacteria?

Gram negative monerans that perform plantlike photosynthesis and release oxygen as a side effect. (autotrophs)

10

Difference between obligate aerobes, obligate anaerobes and facultative anaerobes.

obligate aerobes: cannot live without oxygen

obligate anaerobes: cannot live with oxygen

facultative anaerobes: can use oxygen, but don't depend on it.

11

The characteristics common to all monerans (bacteria)?

-unicellular
-prokaryotic
-heterotrophs or autotrophs

12

3 shapes of bacteria?

coccus (round), bacillus (rod), spirillium (spiral)

13

Define binary fission

Bacteria asexual reproduction; chromosome replication/cell division

14

Define symbiosis

Bacteria living in/on organisms either helping or harming the organism.

15

Define mutualism

a symbiotic relationship in which both organisms benefit