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Definitions
Defenintions on Carbs, Lipids, and Proteins
24
Biochemistry
9th Grade
11/08/2010

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Term
monomer
Definition
a single unit of an organic compound
Term
polymer
Definition
many monomers bonded together
Term
monosaccharide
Definition
one unit of carbohydrate (monomer)
Term
disaccharides
Definition
two simple sugars bonded together
Term
polysaccharides
Definition
complex sugars
Term
isomers
Definition
molecules with the same chemical formula but with different structural formulas
Term
biochemistry
Definition
study of compounds and chemical reactions of living organisms
Term
dehydration synthesis
Definition
taking away water molecules to bond monomers to form larger molecules
Term
hydrolysis
Definition
adding water to a polymer to break them back down to monomers
Term
carbohydrates
Definition

- for energy

- structural components

Term
lipids
Definition

- for energy storage

- for insulation and protection

- structural components of cell membranes

Term
triglyceride
Definition

laarge molecule made up of two smaller molecules

(NOT POLYMER!)

Term
phospholipid
Definition
important for structure of cell membrane
Term
saturated fats
Definition

- solid at room temp

- usually in animal products

- no C to C double bonds

Term
unsaturated fats
Definition

- liquid at room temp

- usually found in plan oils

- has C to C double bonds

 

(monounsaturated is healthiest: only one C to C double bond)

Term
cholesterol
Definition

- found in animals

- important to make hormones

- in excess, can cause plaque buildup in vessels (BAD)

- also made from saturated fats

Term
proteins
Definition

Makes up most of an organism.

 

Term
amino acid
Definition

monomers of proteins

CHON

Made up of animo, carboxyl groups, and R groups

Term
peptide bond
Definition
bond between amino acids
Term
4 Things that make proteins different
Definition

# of amino acids

Sequence of amino acids

types of animo acids

# of polypeptides that form the protein

Term
primary structure
Definition
single, straight chain of animo acids
Term
secondary structure
Definition
chain folds into helix (coil) due to hydrogen bonding between R groups
Term
Tertiary structure
Definition
folding of helix into 3D structure due to R group interactions
Term
Quaternary Structure
Definition
only occurs when more than 1 polypeptide joins to form a protein
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