Chapter 9: Classification Flashcards
1
Q
3 domains of life
A
-Bacteria, Archae, Eukarya (protista, fungi, plantae, animalia)
2
Q
bacteria
A
- single-celled prokaryotes
- no membrane bound organelles
- peptidoglycan in cell wall
- one type of RNA polymerase
- no introns
- play vital role as decomposers
- many are pathogenic
- some carry out photosynthesis
- some fix nitrogen, some are anaerobes
3
Q
archaea
A
- unicellular prokaryotes
- includes extremophiles v(withstand extreme environments)
- some introns
- no peptidoglycan
4
Q
eukarya
A
-nucleus and internal organelles
no peptiglycan
5
Q
systematics
A
-taxconomy with biological diversity and evolution as context
6
Q
protista
A
- seaweeds and slime molds
- single and primitive multicelled organisms
- heterotrophs and autotrophs
- euglena: autotrophic
- protozoans: amoeba (pseudopods), paramecium (cilia)(classified on how move)
- some use conjugation
7
Q
fungi
A
- heterotrophs and eukaryotes
- decompose with hydrolytic enzymes
- cell walls composed of chitin
8
Q
plantae
A
-autotrophic
9
Q
animalia
A
- heterotrophic, multicellular
- monophyletic: all animal lineages can be traced to one common ancestor
10
Q
multicellular eukaryotes
A
-appeared 1.5 billion yrs ago
11
Q
cell
A
-basic unit of all forms of life
12
Q
tissue
A
-group of similar cells with same function
13
Q
organ
A
-group of tissues that work together to perform related functions
14
Q
ectoderm
A
-skin and nervous system
15
Q
endoderm
A
-digestive system (innermost layer)
