CATALYST #?: October 14th, 2013 What is one thing (school-appropriate) you did over fall break? What is your favorite food? What are the ingredients of your favorite food?

Agenda Catalyst (5 minutes) Macromolecule Basics + Notes (15 minutes) Modeling Macromolecules (15 minutes) Exit Ticket (5 minutes) Homework: Read Chapter 6, Section 4 (THIS WILL BE ON QUIZ)

Announcements New nine weeks—new attitudes? (NEW UNIT) Office hours resume this week. Review of goals, expectations, and website. Open-sharing time.

Goals, Class Norms, all that stuff Proficient/Advanced on EOC Proficient/Advanced on each SPI 5 points of growth on the ACT Class Norms Review: Revisions? Additions? How to make them more meaningful Comments

Unit 4: Guiding Questions What molecules are found in all living organisms? Why do we need to eat a balanced diet that contains a variety of foods?

Objectives SWBAT define macromolecule and identify the four biological macromolecules found in ALL living things. SWBAT identify the monomers that compose each of the major macromolecules.

Introduction Biology is the study of LIFE “Bio” means life Therefore, we will begin our study of life by learning about the molecules found in all living things.

Molecules Key Point: Two or more atoms of any element bonded together are known as a molecule

Atoms + Elements A pure substance containing one type of atom Basic unit of matter

Polymers Key Point: Polymers are large molecules made up of many smaller, repeating units known as monomers “Poly” means many “Mono” means one Another name for polymers is macromolecules “Macro” means large

Macromolecules Key Point: The four macromolecules found in all living organisms are proteins, carbohydrates, lipids, and nucleic acids Each of the four macromolecules contains the elements carbon (C), oxygen (O), and hydrogen (H) They are considered organic molecules because they all contain carbon

Proteins Key Point: Proteins are made up of amino acids The amino acids are joined together by peptide bonds Amino acids contain carbon, oxygen, hydrogen, and also nitrogen.

Carbohydrates Key Point: Carbohydrates are made up of monosaccharides Another name for carbohydrates is polysaccharides Carbohydrates only contain carbon, hydrogen, and oxygen

Lipids Key Points: Lipids are most commonly made up of fatty acids and glycerol One of the main types of lipids is fats, also known as triglycerides (1 glycerol, 3 fatty acids) Fats can be saturated or unsaturated Lipids contain mostly carbon and hydrogen, but also oxygen. Saturated fats= no double bonds Unsaturated fats= double bonds

Nucleic Acids Key Point: Nucleic acids are made up of nucleotides Every nucleotide contains a sugar, phosphate, and a nitrogen base

Summary All cells contain proteins, carbohydrates, lipids, and nucleic acids Proteins are made up of amino acids Carbohydrates are composed of monosaccharides Many lipids are made up of fatty acids and glycerol Nucleic acids are composed of nucleotides

Macromolecules modeling Materials: Notebook paper, macromolecule slip, a moderately decent and non-apathetic attitude Questions on the board: DO NOT WRITE THE QUESTION. WRITE YOUR ANSWER. For each question, certain slips will stand. STAND, WRITE, ANSWER

QUESTION 1: Stand, write, answer All of the monomers stand. Question: What term is given to a large molecule made up of smaller, repeating units known as monomers? Answer: Polymer

Question 2 All of the monosaccharides stand. Question: Which macromolecule is made up of monosaccharides? Answer: Carbohydrates

Question 3 Protein stand. Question: What are proteins made up of? Answer: Amino acids

Question 4 Lipids stand. Question: What are many lipids made up of? Answer: Glycerol and fatty acids

Question 5 Nucleotides stand. Question: Which of the macromolecules is made up of nucleotides? Answer: Nucleic acids

Question 6 Nucleotide stand What are the three parts of a nucleotide? Answer: Sugar, phosphate, nitrogen base

Exit Ticket Answer the following questions on your Exit Ticket sheet. What term is given to large molecules made up of smaller, repeating units known as monomers? Which of the four macromolecules is often made up of fatty acids and glycerol? Proteins are made up of what monomer? What are the monomers that nucleic acids are made up of? Monosaccharides are the monomers of which macromolecule?