classification Flashcards
1
Q
biological species concept
A
a group of similar organisms in morphological and physiological features that are able to breed together and produce fertile offspring
2
Q
archaea domain
A
- extremophile
- no nucleus
- membrane lipids: branched HC bonded to glycerol
- 70s ribosomes
- RNA polymerase and DNA rep similar to EUK
- cell wall of polysaccharides and glycoconjugates
- divide by binary fission
- protein binding to DNA
- no membrane bounds organelles
- circular DNA
3
Q
bacteria domain
A
- no nucleus
- divide by binary fission
- circular DNA
- no histones
- no membrane bound organelles
- plasmids
- 70s ribosomes
4
Q
eukarya domain
A
- nucleus and membrane bound organelles
- linear DNA w histones
- 80s ribosomes
- cell division by mitosis
- asexual and sexual reproduction
5
Q
prokaryotes kingdom
A
- no nucleus
- loop of DNA, naked DNA, no histones/chromosomes
- no membrane bound organelles
- 70s ribosomes
- smaller than euk
- free living or parasitic
6
Q
protoctists kingdom
A
- eukaryotic
- single celled or groups of similar cells
- wide variety, unifying feature is that they do not fit elsewhere
- display various plant or animal features
- mostly free living
- autotrophic of heterotrophic nutrition
7
Q
fungi kingdom
A
- eukaryotic
- single cells (yeast) or have a mycelium that consists of hyphae
- cell wall of chitin
- cytoplasm is multinucleate
- mostly free living
- saprophytic nutrition: use extracellular enzymes to break down matter and absorb nutrients
- most store food as glycogen
- reproduce through pores
- never chloroplasts
8
Q
plant kingdom
A
- eukaryotic
- multicellular
- cell wall of cellulose
- autotrophic nutrition: photosynthesis and absorption
- contain chlorophyll
- store food as starch
9
Q
animals kingdom
A
- eukaryotic
- multicellular
- heterotrophic nutrition: digest large organic molecules
- usually able to move around
- food store as glycogen
- nervous system
10
Q
classification order
A
kingdom phylum class order family genus species
