CHAPTER THREE - CHAPTER THREE Macromolecules 4 types...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
CHAPTER THREE Macromolecules Will be present & be formed in the same amounts, and same ways in all living things A giant polymer-many small bonding monomers together. Most bonds are covalent Have many functions depend on chemical properties and shape. Use them for energy storage, structural support, transport(in & out of cells), protection, and defense (skin or immune system), metabolic activities, movement, growth, and development, heredity (DNA). To form a polymer you have a condensation reaction. Proteins An amino acid is the monomer for building the protein. There are 20 different amino acids. Amino Acids - the abc’s of proteins Can be up to thousands of amino acids long The R group is always different in all amino acids-they can be hydrophilic, hydrophobic, positively or negatively charged, have ability to have a disulfide bonding. Put 2 amino acids together=peptide bond, 2=dipeptide, 3=tripeptide, more than 3 up to 20=polypeptide. Different levels of complexity or structure 1. Primary -sequence of amino acids (peptide backbone) N-C-C-N-C-C-N(- are peptide bonds) 2. Secondary -repeated patterns in different regions of the polypeptide chain. The most common *Alpha Helix (α) *Beta Pleated Sheet (β) Depend on Hydrogen Bond
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
* Alpha Helix : right handed coil-formed by hydrogen bonds, find this with structural & fibrosis proteins. Ex). Keratin * Beta Pleated Sheet : form between peptide regions that lye parallel, hydrogen bonds
Background image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

Page1 / 5

CHAPTER THREE - CHAPTER THREE Macromolecules 4 types...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online