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Semester 1 Bio H
All Vocab words from Semester 1
45
Biology
10th Grade
12/12/2010

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Term
unicellular
Definition
single cell
Term
multicellular
Definition
many cells
Term
heterotroph
Definition
consumes other organisms for energy
Term
autotroph
Definition
makes own energy
Term
bioethics 
Definition
deciding what is right in biology
Term
sexual reproduction
Definition
2 parents produce a genetically different off spring
Term
asexual reproduction
Definition
1 parent turns into two genetically identical living things
Term
centrifugation
Definition
machine spins to separate fluids
Term
chromatography
Definition
separation using a piece of paper
Term
protons
Definition

subatomic particle 

located in nucleus

positive charge 

weight: 1 AMU

Term
neutrons
Definition

subatomic partice

located in nucleus

no charge

weight: 1 AMU

Term
electrons
Definition

subatomic particles

located in orbitals around the nucleus

negative charge

weight: too little to consider

Term
atomic number
Definition

whole number

number of protons

Term
atomic mass
Definition
 number of protons and neutrons
Term
ion
Definition
atom that has a positive or negative charge
Term

anion

 

Definition
negatively charged ion
Term
cation
Definition
positively charged ion
Term
ionic bonds
Definition
transfer or electrons
Term
covalent bonds
Definition
sharing electrons
Term
isotope
Definition
contains the same number of protons but different numbers of neutrons
Term
radioisotope
Definition
easily detectable isotope because of radioactivity
Term
solute
Definition
substance dissolved in fluid
Term
solvent
Definition
liquid, gas, or solid that dissolves another 
Term
solution
Definition
mixture composed of two or more substances
Term
suspension
Definition
fluid containing solid particles
Term
pH scale
Definition
measures how acidic or basic a solution is
Term
acid
Definition
forms when H+ (hydrogen ions) are released in solution
Term
base
Definition
form when OH- (hydroxide ions) are released in solutions
Term
neutral pH
Definition
pH of 7.0
Term
synthesis reaction
Definition

chemical reaction

small--->large 

A+B=AB 

Term
decomposition reaction
Definition

chemical reaction

large--->small

AB=A+B

Term
exchange reaction
Definition

chemical reaction

AB+C=AC+B

Term
endothermic reaction
Definition
energy is absorbed
Term
exothermic reaction
Definition
energy is given off
Term
chemical equations
Definition

show reactants (before reaction)

and products (after reaction)

 

Term
adhesion
Definition
water is attracted to other surfaces
Term
cohesion
Definition
water molecules are attracted to eachother
Term
reactant
Definition
before reaction
Term
product
Definition
after reaction
Term
monomer
Definition
building block molecules that get linked together to form polymers
Term
polymer
Definition
large molecules made by linking together many monomers
Term
organic molecules
Definition

contain CARBON

made by living things 

Term
inorganic molecules
Definition

contain NO CARBON 


Term
carbohydrates
Definition
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