33195803
Description
Flashcards by Makenna Ornes, updated more than 1 year ago
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Created by Makenna Ornes
about 4 years ago
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| Question | Answer |
| 5 characteristics of life | 1) consist of 1 or more cells 2) take in & use energy 3) sense & respond to environment 4) maintain homeostasis 5) reproduce & grow |
| cell | organized unit that can live & reproduce by itself using energy, raw materials, & instructions in DNA -smallest unit that can be alive |
| primates | mammals that walk on 2 feet such as humans & apes |
| vertebrates | animals with backbones |
| 3 kingdoms/domains of life | eukarya, bacteria, archaea |
| eukarya kingdom | animals, plants, fungi, microscopic organisms (protists) |
| mammals | vertebrates that have body hair |
| closest primate relative | apes |
| why are humans more complex? | great manual dexterity, analytical abilities, complex social behavior, great verbal skills |
| life's organization order | atoms-molecules-cells-tissues-organs-organ systems-organism-population-community-ecosystem-biosphere |
| producers | self-feeding organisms that secure energy from physical environment like plants |
| primary consumers | organism that feeds on primary producers |
| secondary consumer | organism that eats primary consumers |
| tertiary consumers | organism that feeds on primary & secondary consumers |
| quaternary consumers | top predators of environment; eats tertiary consumers |
| humans are typically... | secondary consumers |
| energy flow | sun - producers (some energy lost) - consumers - decomposers (some energy lost) |
| energy | one-way flow through organisms & cycling of materials |
| scientific studies are... | systematic |
| steps of scientific method | 1) observe natural phenomenon 2) identify question/problem to explore 3) develop testable hypothesis 4) make specific prediction 5) test prediction |
| ecosystems are... | webs of life and actions in part of web affect the whole |
| examples of effects of human activities | loss of biodiversity climate change acid rain |
| experiment | test carried out under conditions researcher can control |
| variable | factor that can change with time or with different circumstances |
| control group | differs from experimental group; doesn't change or receive IV |
| sampling error | develops when experimenter uses sample/subset of a population for experimental group that is not large enough to be representative of the whole |
| science has to be... | based on logic |
| critically thinking | 1) evaluate source 2) evaluate content (let credible evidence do convincing and question credentials/motives) |
| correlation | 2 things happened at same time |
| cause | the reason why something happens |
| what to remember about cause and correlation | cause doesn't equal correlation |
| fact | verifiable info |
| opinion | involves subjective judgement |
| critical thinking def | an objective, evidence-based evaluation of info |
| theory | explanation of range of observations/events based on repeated testing of hypothesis |
| a theory can be... | modified or rejected |
| science can't... | explain meaning of life or why we all die |
| science doesn't involve... | value judgements |
| homeostasis | state of chemical and physical stability inside the body |
| negative feedback includes... | sensors, integrating center/control, effectors, & response |
| why more diseases in recent years? | 1) more people on planet 2) more people traveling 3) misuse/overuse of antibiotics |
| respiratory tract preventative measures | handwashing cover mouth for sneeze/cough disposal of used tissues vaccination programs |
| digestive tract preventative measures | handwashing good public sanitation proper food storage, handling, cooking |
| blood preventative measures | avoid needle sharing maintain pure public blood supplies vaccination programs |
| skin preventative measures | handwashing limit contact with infected items |
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