Chapter 3 Biochemistry. HBIO HHS-Tyska. Pseudorhiza haeckeli 99% water. Section 3-1 Water. THE IMPORTANCE OF WATER cells _____________ water –medium of life dominates climate covers ______________ of earth’s surface common as gas, liquid, & solid in nature life began in water.
THE IMPORTANCE OF WATER
Structure of water (____________ bonds)
O has ________ protons, H has _____ proton
An ionic compound mixed with water tends to dissociate into ions
Water strider is able to walk on water due to water’s high surface tension.
Carbon has ____________e- in outer shell
Symbolic shorthand - Each line represents a ___________________________- (sharing of a pair of electrons)
makes it a polar molecule
_____________________: reaction in which polymers are broken down with the addition of ___________________; reversal of a condensation reaction
_________________________________: synthesized by plants, animals, and humans to be stored for food, structural support, or metabolized for energy.
________________________:hundreds of glucose molecules strung together in a highly branched chain
____________________:thousands of glucose monomers linked together in a straight chain
_____________________: composed of glucose monomers
2 amino acids
Proteins are composed of one of more polypeptides.
Some proteins are very large molecules containing 100’s of amino acids
Long proteins are bent and folded as a result of interactions like Hydrogen bonding between amino acids.
Divided into categories according to structure:
WHAT’S A FATTY ACID???
Purple- Polar Carboxyl head (–COOH)
Green-Nonpolar Hydrocarbon Tail
_______________________FATS: FA’S all single bonds; mostly animal fats; associated with unhealthy diet risk of artherosclerosis, plaques in bv’s reduce blood flow
_______________________ FATS: FA’S have double bonds which causes links; oils at room temp (plants, fish)
________________________FATS: many double bonds (cooking oils)
Nucleotide consists of three main components: