Cellular Respiration

Connection between photosynthesis & respiration Plant Cell chloroplast mitochondria glucose ATP chloroplast mitochondria glucose ATP Plants Create glucose through photosynthesis Glucose is used to make ATP through cellular respiration

Connection between photosynthesis & respiration Glucose (from food) mitochondria ATP Glucose Animals Plants create glucose through photosynthesis Animals eat the plants Glucose is used to make ATP through cellular respiration

Cellular Respiration Who? All eukaryotic cells Purpose? Convert food (such as glucose) into ATP 1 glucose = 36 ATP Aerobic process: Reaction requires O2 Exothermic reaction: reaction that releases heat

Step 1: Glycolysis Where? In cytoplasm What happens? Mitochondria Glucose C6H12O6 C C ATP ATP C C En-zyme C C C C C Where? In cytoplasm What happens? A) Glucose (from our food) is broken down B) 2 ATP molecules released for cellular processes C) Broken pieces of glucose (pyruvate) enter mitochondria

pyruvate

Step 2: Kreb’s Cycle Where? Inner mitochondria layer (matrix) ATP ATP Mitochondria En-zyme ATP CO2 C C CO2 C CO2 Energy molecule ATP CO2 C CO2 C En-zyme CO2 C Where? Inner mitochondria layer (matrix) What happens? A) Enzymes break apart pyruvate B) 2ATP & CO2 created C) Energy molecules sent to fluid interior of mitochondria

Step 3: Electron Transport Chain ATP ATP ATP Mitochondria P O2 En-zyme ADP ATP O2 Energy molecule ATP ATP ATP ATP ADP P ADP O2 P P O2 ADP O2 Where? Across inner mitochondria membrane What happens? Mitochondria takes in oxygen (aerobic) Enzymes + Energy molecule + O2 bonds ADP + P to create…. 32 ATP’s Water (H2O) created as waste (O2 bonds with H from energy molecule)

Review Which molecule is the energy molecule of cells? Which types of organisms perform cellular respiration? Where does glycolysis occur? What is broken down during glycolysis? What is created as a result of glycolysis? Where is aerobic respiration performed? Name the 2 stages of respiration that take place in the mitochondria. Which waste gas is created by the Kreb’s cycle? How many ATP molecules are made during glycolysis? How many ATP molecules are made during Kreb’s cycle? How many ATP molecules are made during Electron transport chain? How many ATP molecules are made in total? Sketch and label a mitochondrion with the following: Reactants, Products, & Structures (Krebs cycle, electron transport chain, matrix, inner membrane)