1. Chemical Composition of the Body

2. Proteins Composed of ____________. How many?
Made up of 3 functional groups:
______________
Info to make proteins??

3. Fig 2.26

4. The Making of a Protein Via dehydration synthesis.
Formation of ____________ leads to di________, tri__________, oligo__________, poly____________
1 structure
Polypeptide chains varie in length from 3 to 4,500 amino acids.
Fig 2.27

5. Levels of Protein Structure
Fig 2.28

6. Tertiary Protein Structure
What determines the function of the protein?
Weak bonds of tertiary structure lead to easy ______________ by pH and Temp.
Reversible?
Fig 2.29

7. Protein Structure, cont.
Some functional proteins are composed of multiple polypeptide chains covalently bonded together.  = ________________
Examples

8. Conjugated Proteins
Protein must combine with other molecule to become functional
Glycoprotein = Protein + ________ Examples: some hormones, proteins in cell membranes  often function as ____________
Lipoprotein = Protein + ______ Examples: in cell membranes, carrier molecules in blood

9. Protein Functions Can you name some?
Structural: collagen fibers in connective tissues; keratin in skin
Enzymes: assist every chemical process in the body
Hormones
Antibodies = protective: part of the immune system
Receptors: receive communication from other cells for regulation of cell activity
Carriers: across cell membranes or in blood
Enzymes
Membrane transporters
Signal molecules
Receptors
Binding proteins
Immunoglobulins
Regulatory proteins

10. Nucleic Acids Name the types: Building blocks of nucleic acids?
Composition?