Georgetown High School TAKS Science Objective 3 Student Review

13 terms by hodgsonj 

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10th and Exit level science TAKS review of objective 3

commensalism

one organism benefits (is happy) and one organism is not harmed or helped (is neutral meaning it doesn't really care)

mutualism

both organsims benefit (both are happy!)

parasitism

one organism benefits (is happy) and one organsims is harmed (is sad)

All viruses cause diseases such as

AIDS (from HIV which infect the helper T cells), colds, warts, smallpox, flu (influenza)

virus

NOT LIVING, must have living host, cannot be killed with antibiotics

bacteria

living (eubacteria or archebacteria kingdom), can be harmful or beneficial, examples: strep throat, staph infections

beneficial bacteria

aid in digestion, food making (cheese, yoguar), drugs (inculin), decompose and recycle nutrients

harmful bacteria

cause diseases, can spoil food, can be treated with antibiotics

trophic levels

4th Level Tertiary Consumers (less energy then 3rd level)
3rd Level Secondary Consumers (less energy then 2nd level)
2nd Level Primary Consumbers (less energy then 1st level)
1st Level Producers (maximum amount of energy)

food energy pyramid

shows what happens to energy in an ecosystem as it flows from one organism to another, top of pyramid less energy, bottom of pyramid more energy (plants are at the bottom)

grass (look who ate me!)→deer

food chain or web, grass (energy flow)→deer

evidence of change in a species

fossil record, DNA, anatomical similarities (similar body parts), physiological similarities, embryology

natural selection

organisms with favorable traits survive and are able to reproduce (survival of the fittest)

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