Unit 1 Flashcards
(24 cards)
Homeostasis
Maintenance of a stable level of internal conditions even though environmental conditions are constantly changing
Biology
Study of life
Metabolism
Organisms can carry on chemical reactions
Unicellular
Organisms made up of one cell
Multicellular
Organisms made up of more than one cell
Cell differentiation
Cells that start to specialize
Levels of organization
Organelles->Cells->tissues->organ->organ system->organism
Characteristics of life
Organisms respond to stimulus/metabolism/growth and development/reproduction/change over time/homeostasis
Three domains
Prokaryotes, Eukaryotes, Archaea
Prokaryotes
Single-called organism. Such as bacteria and cyanobacteria
Eukaryotes
Multicellular organisms
Archaea
Archaebacteria
Ecosystem
Communities of living species and their physical environment
Natural selection
Theory of evolution of where the ability of populations of organisms to change over time is important for survival in a changing world
Adaptation
Trait that improve an individual’s ability to survive and reproduce
Scientific method
An organized approach to learn how the natural world works
Hypothesis
A proposed explanation for the way a particular aspect of the natural world functions
Prediction
Statement that forecast what would happen in a test situation if the hypothesis were true
Control group
Provides a normal standard against which the biologist can compare results of the experimental group
Constant
The factor that stays the same
Experimental group
Identical to the control group but has an independant variable
Dependent variable
The factor that is affected by the independant variable
Independant variable
And an experiment, the factor that is deliberately manipulated
Theory
A set of related hypothesis is confirmed to be true many times and it can be explained a great amount of data
