Introduction to Biochemistry Please turn in your syllabus and safety contract to your period’s drop box. On a scratch sheet of paper, make a list of everything.

Introduction to BiochemistryPlease turn in your syllabus and safety contract to your period’s drop box.

On a scratch sheet of paper, make a list of everything you ate yesterday. (Be honest!)

Science Process Skills Review

Vocabulary ReviewDiscuss the differences in the

following sets of words with your neighbor:◦Prediction and Hypothesis◦Conclusion and Theory◦Independent Variable, Dependent

Variable, and Control

Food DiariesAn example of a balanced diet for

a dayAn example of an imbalanced

diet for a day

Energy in food comes from four macromolecules

ProteinsLipids

Nucleic acids Carbohydrates

Macromolecules are built from small pieces called monomersMonomers come together to form

polymers (broader term for macromolecules)

Protein monomer: amino acidsProtein polymer: protein,

polypeptide 2 amino acids

Dipeptide + H2O

Peptide bond

Hy

dro

lys

is

H2O

Co

nd

en

sa

tio

n

Amino acids join to form proteinsDraw, color, and label three

amino acids, how they join together, and how they break apart in your notes.

Proteins can denature.

Carbohydrate monomer: monosaccharide2 monosaccharides =

disaccharideMany monosaccharides =

polysaccharide (polymer)

Monosaccharides join to form polysaccharidesGlycosidic bondsDraw, color, and label three

monosaccharides, how they join together, and how they break apart in your notes.

Nucleic acid monomer: nucleotideDraw and label a picture of a

nucleotide in your notes.Phosphate

Sugar

Base

2 Nucleic AcidsDNARNA

LipidsMonomer:

fatty acidsSaturated

fatUnsaturat

ed fat

WaterAll of these reactions take place

in the solvent of life: water!

Small negative charge

Small positive charge

–

+ +

Hydrogen Bonds

+ +

-

H HO

+

+

-

HHO

Hydrogen bond

Finding Macromolecules with IndicatorsWhat foods have carbohydrates

in them?