Final Review: Unit 1 Flashcards
8 characteristics of life
composed of one or more cells, display organization, grow and develop, reproduce, respond to stimuli, require energy, maintain homeostasis, adaptations to evolve over time
negative feedback mechanism
corrects any changes to bring the body back to homeostasis
receptors
what receives the stimulus
control center
where conditions are compared to the set point
effectors
what causes the responses
theory
an explanation of a phenomenon that is supported by many observations and experiments
pseudoscience
tries to imitate science but is not based off scientific fact or research
peer review
allows scientists to share work for it to be challenged and debated
metric system
number system used in science, all units are powers of ten
steps of scientific method
observe, ask questions, form hypothesis, experiment, analyze data, state conclusions, report findings
observation
direct way of gathering information
inference
statement made when you combine what you already know with what you observe
hypothesis
testable explanation for a situation
format of hypothesis
if then
experiment
planned procedure to test a hypothesis
independent variable
variable you change
dependent variable
what is measured
control group
group under normal conditions
experimental group
group with independent variable applied
constants
factors that do not chagne
quantitative data
numerical data
qualitiative data
data collected based off senses
conclusion
decision where you state if hypothesis is supported or rejected
