1.1
What is science
The way of gaining knowledge about the natural world
Basic unit of life
cells
matter is ...
everything that has mass and volume
Chemical reaction
change of one substance to another
A solution is..
a mixture of 2 substances
A scientific law is a ____ that ____ ____ under certain natural conditions
stament- cannot change
Same species in a specific area
Population
A polypeptide is a long chain of ...
amino acids
Without enzymes ..
most life will died
...of Earth's surface is cover by water
75%
Examining the evicence
Analysis
Similar ecosystems with similar enviroments
Biome
Contains carbon and its found in living things
Organic compound
Products are the ___ substances
ending
keep water in the liquid phase
Hydrogen bonds
Gas laws
1.Boyle's law
2.Charles' law
3.Ideal law
Natural selection
genes passed that are helpfull
Type of nucleic acids that helps make proteins
RNA
... are shown by a chemical ecuation
chemical reactions
pH measures the concentration of...
hydronium ions
Parts of an experiment
Depend variable, independ variable,constant ,control
close relationship between species where at least one of benefits
Symbiosis
Three main types of lipids
1.triglycerides
2. phospholipids
3. steroids
Metabolism is ...
the sum of all the chemicals reactions within an organism
bases have a pH of ____ and acids of ____
7-14/ 0-7