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21 Cards in this Set
- Front
- Back
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cells and organization
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organisms maintain an internal order. simplest unit of organization is the cell.
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energy use and metabolism
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to maintain their internal order, energy is needed by organisms. energy is utilized in chemical reactions collectively known as metabolism.
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regulation and homeostasis
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organisms regulate their cells and bodies to maintain relatively stable internal conditions
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growth and development
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growth produces more or larger cells, while development produces organisms with a defined set of characteristics.
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7 characteristics of life
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1. complex and organized
2. acquire & use energy 3. respond to environmental changes 4. regulation and homeostasis 5. growth and development 6. contain genetic program & reproduce 7. can evolve |
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continuity of life
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transfer of information (DNA)
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maintenance of life
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energy and metabolism
regulation and homeostasis flow of energy and cycling of materials |
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levels of organization
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1. atoms (smallest unit of matter)
2. molecules and macromolecules 3. cells (life begins here) 4. tissues 5. organs 6. organism 7. population 8. community (many species) 9. ecosystem (environment w/ living things) 10. biosphere |
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genome/ genomics
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entire set of heredity information. all DNA. genome isn't just genes.
DNA - information powerhouse. 98.5% is junk, does nothing. |
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proteome/ proteomics
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all proteins.
all cells have same genome but different cells have different proteins. cells regulate which proteins are encoded. |
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evolution
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tells how life started and changed.
understanding history helps understand structure and function of organisms body. |
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evolution:
vertical descent with modification |
same species evolve thru mutations.
natural selection takes advantage of beneficial mutations |
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evolution:
horizontal gene transfer |
genetic exchange btwn different species
rare. example: bacteria, if congregate, may share some genetic info (antibiotic resistance transferred)f |
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taxonomy
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grouping of species based on common ancestry
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3 domains of life
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bacteria- unicellular prokaryote
archaea- unicellular prokaryote eucarya- unicellular to multicellular eukaryotes |
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4 kingdoms of eucarya
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protista
fungi plantae animalia |
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taxonomy groups
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domain
kingdom phylum class order family genus species (do keep pots clean or the family gets sick) |
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darwin's 4 observations
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1. individuals of a species vary
2. more offspring are produced than survive 3. overproduction- competition. some adapted better to succeed. 4. best adapted individuals survive to reproduce. |
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metabolism
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breaking down and build
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anabolic
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photosynthesis
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catabolic
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respiration
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