Day 18 Agenda: 1)Review PowerPoint 2)Time to work on study guide 3)Time to work on quick lab for McMush

Bell Ringer Day 18 1.Which of the following is not an organic macromolecule found in living organisms? a.Protein b.Nucleic acid c.Carbohydrate d.Sodium Chloride 2.Which combination of biological macromolecule and function is correct? a.Protein : regulates cell reactions b.Lipid : Stores Genetic information c.Carbohydrate : forms membranes d.Nucleic acid : catalyzes reactions 3. The initials in RNA and DNA stand for a. Not acceptable b. Nucleic acid c. Nutritional Advice d. Noxious acid 4. The major component of a cellular membrane is a a. phosphosugar b. phospholipid c. phosphoacid d. phosphoprotein

McMush Quick-lab Directions Follow all format on your lab format sheet. This quick-lab will only include parts: I B. Purpose: The purpose of this lab is to determine what organic macromolecules are in a McDonald’s Happy Meal. V. Data/Results: (here you should copy the 3 tables from your data sheet) VI A. Analysis Questions: (here you should answer the 5 analysis questions from your data sheet in full sentences) VI B. Conclusion: (here you should write a paragraph with at least 4 sentences explaining the purpose of the lab, the results, and any errors that occurred) ** don’t forget to write in pen, not to write on the back of the paper, and to skip a line between each major section**

REVIEW PPT: Unit 2 Biochemistry This Powerpoint reviews most of the key points from the unit. You still need to study your lab and notes to do well on the test.

Atom: basic unit of matter

ISOTOPES– atoms of an element with a different number of neutrons

Chemistry of Life Ionic bond—electrons from one atom are donated to another Covalent bond—electrons are shared between atoms

Compounds Organic: contains carbon (exception: CO 2 is not organic) Inorganic: does not contain carbon

Inorganic Compounds Water ( H 2 O ) Each molecule is made of two HYDROGEN atoms and one OXYGEN atom

Water –H 2 0

Forms weak Hydrogen bonds between molecules. -Positive hydrogen is attracted to negative oxygen.

Water: Hydrogen bond

Organic Compounds Organic Compounds contain carbon. Carbon forms the structural backbone of all living things.

Carbohydrates Organic Compounds that contain: – Carbon – Hydrogen – Oxygen They provide energy The building block (monomer) is monosaccharides

Carbohydrates Three Types – Monosaccharides – Disaccharides – Polysaccharides

Carbohydrates Monosaccharides – simple SUGAR – contain C 6 H 12 O 6 – GLUCOSE, FRUCTOSE, AND GALACTOSE

Carbohydrates Disaccharides – double SUGAR – contain two RINGS – SUCROSE and LACTOSE

Carbohydrates Polysaccharides – complex CARBOHYDRATES – made of RINGS of SUGAR – STARCH, CELLULOSE, and GLYCOGEN

Proteins Basic building material for all living things. Used for STRUCTURE and FUNCTION Made of C, H, O, N

Structure of Proteins Amino Acids – building BLOCKS – 20 different kinds – all have the same elements but in different amounts Polypeptides – chains of AMINO ACIDS Joined by peptide bonds Proteins – chains of POLYPEPTIDES Used to make SKIN, HAIR, MUSCLE, ORGANS, etc.

ENZYMES: proteins that speed up reactions

Factors that affect enzyme action Temperature Concentration pH- – A measure of how acidic or basic a solution is.

pH The scale goes from 0-14 – 0 being the most acidic – 14 being the most basic

Lipids FATTY molecules used to store ENERGY Contain C, H, and O Monomer: fatty acids Do not DISSOLVE in WATER Examples of Lipids are: FATS, OILS, AND WAXES

Nucleic Acids Store INFORMATION that controls CELL activities Monomer: nucleotides Examples: DNA and RNA

Atoms are the building block of life!