silently Set your desk up and silently complete the DO NOW. Binder Handout (Seat) Today’s EQ: why do I need to eat a balanced diet with a variety of food? Today’s Objective: we will be able to identify the structure of proteins in order identify their function and why it important to consume proteins in our diets. HW: 3.5

Agenda Do Now & Review DATA days Updates Review of Some Most Missed Test Questions INM: proteins GP: protein practice & macromolecule extension

Updates Quiz Covering the four macromolecules will be on Thursday 9/24 & Monday 28 th If you didn’t take the unit 1 vocabulary quiz, you need to sign up to retake during my quiz/test retake day (Thursday), if not it goes in as a zero

Data Days

A cell is placed in a solution that has a lower concentration of salt than the concentration inside the cell. What will most likely happen to the cell? (SPI ) A. Water molecules will move into the cell until the salt concentration is the same inside and outside the cell B. Salt molecules will move out of the cell until the concentration of salt is the same inside and outside of the cell C. Water molecules will move out of the cell to raise the salt concentration inside the cell D. Salt molecules will move into the cell until the salt concentration is the same inside and outside of the cell

Vocabulary word #1 Argument Make a prediction: my brother and I have arguments over who is the best football team Actual definition: reasoning for or against something Use in your own sentence

Vocabulary Word #2 Assumption Make a prediction: When I don’t know something for sure I sometimes make assumptions about the outcomes Actual definition: something that is accepted as true Make your own sentence

Proteins: Structure Monomer (basic unit): amino acids Contain at least one amino group (-NH2) and one carboxyl group (-COOH)

Proteins: Amino Acids 20 amino acids (these are essential amino acids) Some are polar & hydrophilic Others are non-polar and hydrophobic. Proteins can contain both kinds.

Proteins: More Structure Polymer (chain of units): protein Amino acids are held together by peptide bonds Dipeptide- two bonded amino acids Proteins = polypeptides, because they consist of more than 2 amino acids dipeptide Amino acids linked by peptide bonds

Proteins: Complex Structures Shape determines its function Primary: polypeptide chain Secondary: polypeptides in coils or sheets Tertiary: coils or sheets form a tangle Quaternary: more than one tangle combines together

Proteins: Function Collagen- building blocks for muscle and tissues Enzymes- speed up chemical reactions Antibodies- defend the body from harmful substances

Proteins: Function Pumps- transport molecules across membranes Insulin- regulate blood sugar levels Ferritin- stores iron from our food

Proteins: Food Sources Found in meat, fish, legumes, nuts, milk, eggs, grains and soy products. Our bodies can’t make 6 amino acids, so we get these from food.

Polypeptide Chain

Graphic Organizer Complete your graphic organizer

Four Finger Challenge Which macromolecule is the main component of cell membranes? (SPI ) A. Carbohydrate B. Lipid C. Nucleic acid D. Protein

Four Finger Challenge All organisms contain four organic molecules. Which group of molecules contains fatty acids and glycerol, is insoluble in water, and function in long-term energy storage? ( ) A. Carbohydrates B. Nucleic acids C. Proteins D. Lipids

Four Finger Challenge A monosaccharide is the simplest kind of which organic macromolecule? ( ) A. Lipids B. Proteins C. Nucleic acids D. Carbohydrates

Complete the Protein Practice Problems Volume 1 voice With your shoulder partner