Ch 02

Chemical

Composition

of the

Body

Proteins

• Composed of ____________. How many?

• Made up of 3 functional groups:

• ______________

• ______________

• ______________

• Info to make proteins??

Fig 2.26

The Making of a Protein

• Via dehydration synthesis.

• Formation of ____________ leads to

di________, tri__________, oligo__________,

poly____________

• 1 structure

Fig 2.27

Levels of Protein Structure

Fig 2.28

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

Protein Structure, cont.

Some functional proteins are composed of multiple

polypeptide chains covalently bonded together. =

________________

Examples

Conjugated Proteins

Protein must combine with other molecule to become

functional

1. Glycoprotein = Protein + ________

Examples: some hormones, proteins in cell

membranes often function as ____________

2. Lipoprotein = Protein + ______

Examples: in cell membranes, carrier molecules

in blood

Protein Functions

Can you name some?

Nucleic Acids

Name the types:

Building blocks of

nucleic acids?

Composition?