Chapter 3 – The Cell Flashcards
1
Q
Define Spontaneous Generation
A
The notion that life can arise from nonliving matter.
2
Q
Define endosymbiotic theory
A
The theory that mitochondria and chloroplasts were once bacteria that formed a symbiotic relationship with plant and animal cells
3
Q
Describe the characteristics of a prokaryotic cell
A
- no nucleus
- single circular chromosome
- usually 1-2 um in size
- unicellular
- binary fission for reproduction
4
Q
Describe the characteristics of a eukaryotic cell
A
- has a nucleus
- multiple rod shaped chromosomes
- usually 3-100um in size
- usually multicellular except protozoa and yeast
- mitosis for reproduction
5
Q
define plasmid
A
small circular double stranded DNA molecules usually found in bacteria
6
Q
define inclusions
A
nutrient storage structures in prokaryotes
7
Q
define periplasmic space
A
the space between the LPS membrane and the plasma membrane in a gram negative bacteia
