Biology terms Flashcards
(25 cards)
Lipids
are nonpolar molecules that store energy and are an important part of cell membranes
Protein
Chain of amino acids
Phospholipid
makes up cell membranes, consist of 2 fatty acids and one glycerol and phosphate molecule
DNA
contains genetic information for cell activities
Nucleic acid
a large and complex organic molecule that stores and transports information
Saturated fatty acids
have the maximum number of hydrogen atoms possible have no double bonds solid at room temperature made by animals not good for you
Unsaturated fatty acids
have one or more double bonds
liquid at room temperature
made from plants
Carbon atoms
Can make 4 bonds with other valence electrons
Po4
Phosphate
Nh3
Amino
COOH
Carboxyl
Functional groups
groups of atoms that influence the properties of molecules and the chemical reactions in which the molecules participate.
Condensation reactions
join monomers (small simple molecules) to form polymers. A condensation reaction releases water as a by product.
Hydrolysis reaction
water is used to split polymers into monomers
Carbohydrates
organic compounds composed of carbon, hydrogen, and oxygen in a ratio of about one carbon to two hydrogen atoms to one oxygen atom.
1:2:1 ratio C:H:O
Polysaccharides
A complex sugar, made of 3 or more monosaccharides
Disaccharides
Made of 2 monosaccharides
Monosaccharides
Basic sugar molecule
Steroids
composed of four fused carbon rings
Waxes
one long fatty acid chain bonded to one long alcohol
Triglycerides
consist of 3 fatty acids and one molecule of glycerol
Nonpolar substances
Do not mix in water
Enzymes
speed up chemical reactions and bind to specific substrates
Substrate
attaches to enzyme like a key into a lock