Variables
unchanged in the experiment
.Constant
living things are made of cells
Cell theory
group of same kind of cells
group of same kind of cells tissue
similar ecosystems with similar environments
biome
Exothermic and Endothermic
The two type of reactions
used for comparison
Control
Characteristics are transferred from parents to offspring within chromosomes
gene theory
Structure made one or more tissues
organ
part of Earth where life exists; includes water, land, and air
Biosphere
energy required to start a chemical reaction
Activation Energy
changed by you
Independant Varible
changes over time
evolution
group of organs that work together
Organ system
all the populations in the same area
Community
sum of all the reactions in an organsim
metabolism
affected by other factors
Dependent Varible
genes passed that are helpful
Natural selection
basic unit
cell
abiotic and biotic factors in an area
ecosystem
speeds up the reactions in cells, without them most life would die
Enzyme
controlled investigation
Experiment
keeping this constant
Homeostasis
individual with more than one organ system
Organism
number of same species in a specific area
population
Changes one substance into another
Biochemical reaction