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chap 1

bios 103

QuestionAnswer
Prokayotes no nucleus, no membrane-bound organelles, first cell on the planet ie. less complex structurally, ex. bacteria
Eukaryotes has a nucleus that houses DNA, has many membrane bound organelles, ex. animals plants and fungi
Signs of life Metabolism composed of cells homeostasis Respond to stimuli growth and reproduction Populations evolve (individuals can not) Contain both DNA and RNA
Homeostasis body maintains a relatively constant environment such as blood pressure, temperature, pH etc…
Hierarchy of living things Did King Philip Come over From Greece Swimming? Domain -- Kingdom -- Phylum -- Class -- Order -- Genus -- Species
Binomial nomenclature universal structure for identifying living things. (Genus species) Genus is always Capitalised and entire ting is italisied or underlined.
domains Bacteria = bacteria Archaea = Archaea Eukarya = Protista, Plantea, Fungi, Animalia
4 Kingdoms of the domain Eukarya Protista Fungi Plantae Animalia
Protista Mosty single-celled, some are autotrophs and some are hetertrophs, most do not have cell walls
Fungi Multicellular, saprobes (heterotrophs that decompose things for nutrition)
Plantae Multicellular, autotrophs, have cell walls
Animalia Multicellular, no cell walls
Autotrophs Make their own food usually using sunlight
Heterotrophs Need to eat others (plants or other animals to get nutrition)
Bacteria (Domain) Single celled, prokayotic,only a few cause disease (most are harmless or even beneficial)
Archaea (Domain) Single celled, Prokayotic,sometimes live in extreme enviroments (not harmful can live in or on us)
Natural selection requirments 1. Variation 2. Inheritance 3. High rate of population growth 4. Differential survival and reproduction
Selective Pressures Environmental factors the allows individuals with particular traits to survive and reproduce more in a population
Created by: 100000077416299
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