What are proteins???. Hair Fur Muscles Chemical messengers between cells And more…. Most diverse functions of any of the macromolecules we have discussed!!!. PROTEIN : a POLYMER constructed from a set of just 20 kinds of monomers called AMINO ACIDS.
PROTEIN: a POLYMER constructed from a set of just 20 kinds of monomers called AMINO ACIDS.
AMINO ACID: consists of a CENTRAL CARBON ATOM bonded to FOUR PARTNERS. THREE of these partners ARE always THE SAME.
Proteins must be PRECISELY TWISTED, FOLDED, and COILED into a UNIQUE SHAPE in order to work.
(Ball of yarn vs. a sweater, same material different functions)
Cooking an egg: the egg white changes from a clear liquid to a white solid during cooking because heat denatures the egg’s proteins.
Examples: hair, fingernails, muscle fibers
Example: Hemoglobin, a protein, transports O2 in the blood
Example: Antibodies are proteins that attach to foreign molecules to provoke immune response
Example: Insulin, a hormone, regulates the level of glucose in your blood
NUCLEIC ACID: large nitrogen-containing polymers found mainly in the nuclei of cells.
DEOXYRIBONUCLEIC ACID (DNA): POLYMER built from monomers called NUCLEOTIDES and contains the sugar deoxyribose.
(There are only four nucleotides that make up DNA: A, T, C, and G.)
RIBONUCLEIC ACID (RNA): POLYMER built from monomers called NUCLEOTIDES and contains the sugar ribose.