Intro to Bio EXAM 1

physics, astronomy, chemistry

study of life

natural phenomenon (and biological life)

according to properties

• branch of biology that names and
• classifies species into groups of increasing breadth

• Domain
• Kingdom
• Phylum 
• Class
• Order 
• Family
• Genus 
• Species

• Archaea
• Bacteria
• Eukarya

• individuals make scientific-sounding claims
• that are not supported by trustworthy, methodical scientific studies

• based on only one or a few observations, people conclude that there is or is
• not a link between two things.

Step 1: Make observations.Step 2: Formulate a hypothesis.Step 3: Devise a testable prediction.Step 4: Conduct a critical experiment.Step 5: Draw conclusions and make revisions.

• –Proposed explanation for a natural
• phenomenon

• –Proposition based on previous
• observations or experimental studies

widely accepted hypothesis

• reproduce via DNA
• grow and develop
• take energy from environment
• sense and respond to environment (plant towards sun) 
• maintain constant internal conditions (homeostasis)
• evolve over time

atom, molecule, cell, tissue, organ, organism, population, community, ecosystem, biosphere

prokaryotes in extreme environments

single cell living anywhere unicellular

uni and multicellular

collection and analysis of data without hypothesis ie jane goodal

constant don't change

• variables 
• independent (changes/cause)
• dependent (measured on IV/effect)

double blind study

matter