Chapter 2,3 Flashcards
Isotopes
Have different number of neutrons than other atoms of same element
Atoms that have gained or lost 1 or more electrons are called
Ions
Cation has what kind of charge
Positive +
Anions have what kind of charge
Negative -
Smallest unit of a substance that retains all the chemical properties of that substance is called a(n)
Molecule
Compounds are made of more than one type of ________
Atom
What is a covalent bond?
A bound that shares pairs of electrons (strongest bond)
A bound that forms when ions of opposite charge attract each other is called?
Ionic (moderatly strong bond)
What is an electro static bond created by a hydrogen atom
Hydrogen bond (weakest bond)
What are the properties of water important to life
Heat storage
Ice formation
High heat of vaporization
Cohesion/adhesion
High polarity
Ions and polar molecules dissolve in ?
Water
pH measures what?
H+
Acids have higher concentrations of
H+ (less OH-)
Bases have higher concentrations of
OH- (less H+)
What is a protein polymer called
Polypeptide
What are polypeptides built from
Amino acid monomers
What is nucleic acid polymer is built from
Nucleotide monomer
What is a carbohydrate polymer built from
Monosaccharide
What is a lipid polymer built from
Fatty acids
The linking of molecular subunits by releasing a water molecule
Dehydration synthesis
Breaking the link of molecular subunits by adding a water molecule
Hydrolysis
6 formations of protien
Enzymes
Keratin
Collagen
Contaractile
Transport
Defense
5 parts of an amino acid
Central carbon
Carboxyl group (-COOH)
Amino group (-NH(2))
Hydrogen
R group
Protein
1 primary structure
2 secondary structure
3 tertiary
4 quarternary
1 Amino acid chain
2 coiling or pleating
3 3-d folding
4 units joining
