Proteins Enzymes Substrates p H Buffers Amino Acid

* Proteins, Enzymes, Substrates, p. H, Buffers

* * * Amino Acid Dipeptide Polypeptide

* *A DIPEPTIDE!!!!! *How can you tell?

* Amino Group - NH 2 Carboxyl Group - COOH Central Carbon Atom - C- Hydrogen Atom -H “R” Group - Side Chain

* Peptide Bond

* Red Meat, Fish, Nuts, Beans, Eggs…. The list goes on!

*The process that changes/transforms one set of chemicals into another CHEMICAL REACTION

* 8 7 7

* EXERGONIC REACTION How can you tell? ? REACTANTS start HIGHER than the PRODUCTS

* exergonic reaction Cellular Respiration Or Hydrolysis

* ENDERGONIC REACTION How can you tell? ? PRODUCTS end HIGHER than the REACTANTS

* Endergonic Photosynthesis OR Dehydration Synthesis

* ACTIVATION ENERGY

* Energy needed to get a reaction started

* ENZYME

* ACTIVATION

*A substance that speeds up the rate of a chemical reaction and works by lowering a reaction’s activation energy (general term) CATALYST

* When a protein UNFOLDS & loses its overall shape… therefore LOSES ITS FUNCTION!

* p. H Levels Temperature levels Regulatory molecules Amount of substances present (enzyme/substrate)

* FALSE – WATER IS NEUTRAL – WHY? ? ? Because the # of H+ ions is = to the # of OH- ions produced.

* 10

* Use arrows to identify the areas of acidic, basic, neutral

* Acidic Neutral Basic • Solutions with a ph of

* *Any compound that *A compound that *Solutions have *In solution *[H+] _____ [OH-] forms _____ ions in solution p. H ____ 7 [OH-] produces ______ ions in solution p. H ____ 7

* • • A way that cells control the p. H They are weak acids/bases that can react with strong acids/bases to PREVENT as sudden change in p. H

To test for sugar in a food sample, what indicator do you need?

*Benedict’s Follow up – what’s the color change for a positive result?

Using the indicator LUGOL’S IODINE solution tests for the presence of what in food?

STARCH Complex carbs Polysaccharides Follow up = What’s the color change for a positive result?

To find out if protein is present in a food sample what indicator solution do you use?

BIURET’S INDICATOR Follow up Question: What’s the color change if there is a positive result?

SODA would test positive for ________ ONLY BEANS would test positive for (2 possible) CHIPS would test positive for ______ & _______

SUGAR PROTEIN (maybe starch) STARCH & LIPID

Bacon would test positive for – Hamburger meat would test positive for Skittles would test positive for --

Protein / Lipid Protein/Lipid Sugar