Quiz 1 Flashcards
0
Q
Four steps of binary fission:
A
- The cell grows
- The DNA replicates and attaches to the cell membrane.
- The DNA and its copy separate as the cell grows even larger
- The cell splits in two. Each new cell has a copy of the DNA
1
Q
Three main shapes of bacteria:
A
Bacilli- rod shaped
Cocci- sphere shaped
Spirilla- spiral shaped
2
Q
How do eubacteria and archaebacteria differ?
A
Eubacteria- all have cell walls (made of peptidoglycan)
Archaebacteria- only some have cell walls. The ones that do are chemically different from eubacteria
3
Q
Another name for archaebacteria
A
Extremophiles
4
Q
Rod shaped bacteria are called
A
Bacilli
5
Q
Most bacteria reproduce by
A
Binary fission
6
Q
Life on earth could not exist without this.
A
Nitrogen-fixing bacteria
7
Q
A bacteria cell
a. Is an endospore
b. Has a loop of DNA
c. Has a distinct nucleus
d. Is an eukaryote
A
Has a loop of DNA
8
Q
Eubacteria A. Include methane makers B. Include decomposers C. All have chlorophyll D. Are decomposers
A
Include decomposers
9
Q
Cyanobacteria A. Are consumers B. Are parasites C. Contain chlorophyll D. Are decomposers
A
Contain chlorophyll
10
Q
Archaebacteria A. Are a special type of eubacteria B. Are parasites C. Are primarily lactic-acid bacteria D. Can live in hostile environments
A
Can live in hostile environments
11
Q
Bacteria are important to the planet as A. Decomposers of dead organic matter B. Processors of nitrogen C. Makers of medicine D. All of the above
A
All of the above
