OBJECTIVE: EXPLAIN WHAT HAPPENS TO THE FOOD WE EAT. Copy the KWL Chart Below onto your warm-up sheet for the week. Date your warm-up 11/3/15 Complete the “K and W” portions of the KWL Chart First. We will finish the “L” portion after the video. K (What I already Know) -At least two things W (What I want to know) -At least one thing L (What I learned) -At least two things

We will watch the Magic School Bus Video “ For Lunch”. As we watch the video consider the objective above. What happens to the food we eat? -After the video you should be able to describe this process in detail. OBJECTIVE: EXPLAIN WHAT HAPPENS TO THE FOOD WE EAT.

How do our bodies take food and make it into energy?

WHAT IS CELLULAR RESPIRATION Cellular respiration is a chemical process in which glucose molecules are broken down to release energy (ATP) for cellular functions

The food made in photosynthesis is used to make energy for cells! Food is NOT energy! They are 2 different things! ATP Plants make food for all living organisms (sugar) Organisms (including plants) must use this food to produce energy ATP is the energy molecule for cells Adenosine PPP Energy Energy is stored in a chemical bond – when the bond is broken, energy is released!

What types of organisms undergo cellular respiration? Cellular respiration occurs in ALL living cells!

WHAT TYPES OF ORGANISMS UNDERGO CELLULAR RESPIRATION? BOTH autotrophs and heterotrophs

What happens to the food we eat? 1. We break our food down into small molecules 2. We use the energy stored in the bonds in our food to make ATP 3. A small amount of the food becomes waste

What are some of the things that our body does that requires energy? Physical Activities Running Playing sports Pumping our hearts Cellular Activities Sending messages to our brain Transporting molecules in and out of our cells

WHY DOES CELLULAR RESPIRATION TAKE PLACE? To convert sugars to ATP (form of energy in which it is most easily broken down)

WHEN DOES CELLULAR RESPIRATION TAKE PLACE? 24 hours a day

WHAT IS THE EQUATION FOR CELLULAR RESPIRATION? C6H12O6 + O2 → CO2 + H20 + ATP (Sugar + Oxygen  Carbon Dioxide + Water+ATP)

WHAT ARE THE REACTANTS FOR CELLULAR RESPIRATION? Sugars and oxygen It’s the SAME as the PRODUCTS of Photosynthesis!

WHAT ARE THE PRODUCTS FOR CELLULAR RESPIRATION? Carbon dioxide, water and ATP It’s the SAME as the REACTANTS of Photosynthesis (if you switch ATP for SUN)

Cellular respiration can be divided into 2 main parts. 1.Anaerobic respiration 2.Aerobic respiration

Anaerobic Respiration Does NOT need oxygen! Happens in the cytoplasm of a cell

Aerobic Respiration Requires oxygen Happens in the mitochondria of a cell

Cellular respiration can take place WITH Or WITHOUT Oxygen! Cellular Respiration Aerobic respiration occurs when oxygen is present Anaerobic respiration (fermentation) takes place when oxygen is NOT present Makes a LOT of ATP Makes a little ATP

WHAT IS THE EFFICIENCY OF ATP FORMATION? For each glucose molecule: –AEROBOIC: 36 ATPs WITH OXYGEN –ANAEROBIC: 2 ATPs WITHOUT OXYGEN (We are going to talk more about Aerobic vs. Anaerobic tomorrow!)

2 types of Anaerobic Respiration 1.Lactic Acid Fermentation 2.Alcoholic Fermentation

Lactic Acid Fermentation Occurs in ANIMAL cells when oxygen is ABSENT Occurs during rapid periods of exercise when the body cannot supply enough oxygen to the tissues/muscles

Why do our muscles burn after we workout? Lactic acid fermentation taking place in our muscles!

Alcoholic Fermentation Occurs is PLANT cells and YEAST in the ABSENCE of oxygen

How does yeast make bread rise? One of the products of alcoholic fermentation is carbon dioxide. The carbon dioxide makes the little air pockets in bread and makes it rise.

O 2 + C 6 H 12 O 6  CO 2 + H 2 O + Energy (ATP) Anaerobic Respiration TOTAL PRODUCTS: -CO 2 -H 2 O-ATP Even though anaerobic respiration is completed in a different way, the products are the same as in aerobic respiration!!!!!

WHAT ARE THE FACTORS THAT AFFECT THE RATE OF CELLULAR RESPIRATION? Oxygen concentration

AerobicAnaerobic OxygenNo oxygen Makes 36 ATP Makes 0 ATP Lactic Acid Fermentation:  occurs during rapid exercise when the body cannot supply enough oxygen to the tissue/muscles. Produces: soreness/pain in muscles/ CO 2 Makes: yogurt, cheese, pickles Alcoholic Fermentation:  Occurs in yeast and other micro- organisms, it produces alcohol and carbon dioxide. Produces: Alcohol and CO 2 Makes: Beer, Wine, Bread SUMMARY

HOMEWORK Complete the Checkpoint Questions on the back of your notes for homework. This is due tomorrow when you come into class.

PHOTOSYNTHESIS VS. CELLULAR RESPIRATION FOLDABLE Now for the OTHER SIDE…

PhotosynthesisRespiration WHERE INGREDIENTS EQUATION

What is Photosynthesis? The process by which plants make food. This process takes place in the CHLOROPLAST (mostly found in the leaves). AUTOTROPHS only! What is Cellular Respiration? The process by which both PLANTS and ANIMALS release energy from food. This process takes place in the cells MITOCHONDRIA. Autotrophs AND Heterotrophs Where does photosynthesis take place? When does photosynthesis take place? (PICTURE) Where does the energy come from? Where does respiration take place? When does respiration take place? (PICTURE) Where does the energy come from?

Picture REACTANTS: PRODUCTS: REACTANTS: PRODUCTS:

EQUATION: REACTANTS PRODUcTS EQUATION: REACTANTS PRODUcTS

CHECK POINT 1 1.Who does Cellular Respiration? 2.What is Cellular Respiration? 3.Which organelle does it happen in? 4.What does the organelle look like? 5.When does Cellular Respiration happen?

CHECK POINT 2 1.Why does Cellular Respiration take place? 2.What are the REACTANTS for Cellular Respiration (what goes IN)? 3.What are the PRODUCTS of Cellular Respiration (what comes OUT)? 4.What is the EQUATION for Cellular Respiration ?

CHECK POINT 3 1.What is a factor that affect the rate of photosynthesis? 2.What are two types of Cellular Respiration? 3.What is AEROBIC Respiration? 4.How much ATP is made from 1 glucose molecule? 5.What is ANAEROBIC Respiration? 6.How much ATP is made form 1 Glucose molecule?