CELLULAR RESPIRATION Ms. Scerra

DO NOW This is a review of photosynthesis, in order for you to understand cellular respiration. How do Autotrophs obtain energy? How do Heterotrophs obtain energy? True or False: After we produce energy it is destroyed when we use it. Cellular Respiration only occurs in animals

CELLULAR RESPIRATION DEFINITION

HOW DOES CELLULAR RESPIRATION COMPARE TO PHOTOSYNTHESIS? Photosynthesis Inputs and Outputs End Game Cellular Formula Differences Cellular Respiration Inputs and Outputs End Game Cellular Formula Similarities

CLOTHESPIN ACTIVITY Do not begin until I tell you to do so. 1.How do your fingers feel? 2.Why?

BIOLOGICAL PROCESSES REQUIRE… ENERGY Squeezing the clothespin, like other biological processes, requires energy. The energy needed is provided by the breakdown of sugars in food to form ATP (cellular respiration) CR requires Oxygen, but after some time cells are unable to provide the needed amount of oxygen, and lactic acid fermentation occurs. When lactic acid builds up, the muscles feel sore and fatigued.

PLEASE BEGIN LAB: YOU WILL BE CREATING AN EXPERIMENT FOR THE OTHER LAB CLASS, AS THEY WILL FOR YOU BECAUSE THIS LAB TAKES 2 DAYS TO COMPLETE.

DO NOW What is the chemical equation for Cellular Respiration? What organelle is in this picture? Do plants perform Cellular Respiration?

THE BASIC STEPS OF CELLULAR RESPIRATION Step 1: Glycolysis (anerobic) Step 2: Krebs Cycle (aerobic) Step 3: Electron Transport Chain (aerobic)

WHAT IS THE DIFFERENCE? Anaerobic - Does not require Oxygen Aerobic - Does require Oxygen

GLYCOLYSIS Occurs in the cytoplasm From the Greek words: Glykys meaning sweet Lysis meaning to Rupture or break ATP = Adenosine Tri-Phosphate

GLYCOLYSIS

WHAT ARE THE INPUTS AND OUTPUTS? Input Output From the split of Glucose, it creates… 1 ADP Then from the use of energy we get… 2 APT NADH (similar to NADP) 2 Pyruvates

LET’S TRY SOME QUESTIONS… 1. Where does glycolysis occur? 2. What are the inputs of glycolysis? 3. If there are 6 glucose molecules that enter glycolysis, how many total ATP molecules are produced? What is the net total? 4. What is the goal of glycolysis?

DO NOW What is the difference between anaerobic and aerobic? Why is there a net output of 2 ATP for 1 glucose in Glycolysis and not 4 ATP? Where does Glycolysis occur in the cell?

KREB’S CYCLE

DO NOW How many NADH are made from 4 glucose molecules? If 6 FADH2 are produced in the Kreb’s cycle, how many glucose molecules did you start with? How many ATP are made in Kreb’s if you start with 10 pyruvates?