Bio- Molecules Unit 2: Highlight or underline the ingredients you are familiar with. U2-1 Weigh yourself before you sit down.

Strawberry Milk Shake, “I’m love’n it!” Are there any chemicals in a McDonald’s Strawberry Milk Shake? List some?

Are there chemicals in foods? Is this good or bad? Strawberry Milk Shake, “I’m love’n it!”

What two things might we get from chemicals if we eat them? Strawberry Milk Shake, “I’m love’n it!”

What does it mean by the phrase, “You are what you eat.”? Strawberry Milk Shake, “I’m love’n it!”

McDonalds Meal

Flip Flop

What is matter? Read the box on the left then answer the questions to the right.

Organic vs. Inorganic? Read the second box on the left then answer the questions to the right.

Carbon is Important for Life Video Clip Watch the video then answer the question on the right.

What is MICRO Biology? Read the last box on the left then answer the questions to the right.

Drawing Organic Molecules How do we draw this molecule? U2-2

Drawing Organic Molecules How do we draw this molecule?

Visit each station and draw the molecule by looking at the models. Label all molecules organic or inorganic. C = Carbon = black N = Nitrogen = red O = Oxygen = blue H = Hydrogen = white bonds = straws single - double = triple ≡ Organic Molecule Stations

Read Solutions and Suspensions pages in the text. Answer the questions and fill in the diagrams with the information that you read about. U2-3

Buffers Buffers maintain homeostasis of pH. What buffer maintains the blood pH? Carbonic Acid! Carbon dioxide dissolves in blood and makes a solution.

Carbonic Acid - H 2 CO 3 H 2 CO 3  HCO 3 ─ + H + When pH gets too low… –This reaction moves to the left taking up H +. When pH gets too high… –This reaction moves to the right giving off H +.

Let’s try it by adding base to a buffered solution

Let’s try it by adding acid to a buffered solution