Do Now Identify the life function occurring in all cells that produces energy from food. Identify the cellular structure where this occurs.
Objective: How does cellularrespiration provide energy for allcells?
Regents ReviewThe main result of aerobic respiration is the1. conversion of radiant energy into chemical energy2. production of lactic acid as an end product3. storage of energy in a polysaccharide4. production of ATP from the breakdown of glucose
Why, when I spoke about cellular respiration,were there both animal/plant cells in the firstslide?Respiration happens in both!!!! Takes place at the Mitochondria Remember Mitochondria are in all cells!
Energy in Food One gram of glucose releases 3811 calories of heat energy! ◦ One calorie = the energy needed to raise the temperature of 1 gram of water 1 degree Celsius
Calorie vs. calorie When we say “this food has 100 Calories,” it’s not what you think… 1 Calorie actually equals1000 “food” calories! 1 Calorie is actually 1 kilocalorie ◦ (it’s just easier to say…humans are so lazy)
Cells do not burn through energyas quick as they can… …they gradually release energy! The energy is taken from food and stored in ATP molecules
Cellular Respiration Breaking down food and releasing energy ◦ Translation: Breaking down glucose and making ATP ◦ NOTE: This can only be done with oxygen present! Think about what would happen to you without oxygen. ◦ Remember: in both plants and animals! Why?
Cellular Respiration requires: 1. Glucose 2. Oxygen ◦ (Aerobic Cellular Respiration) Chemical Formula: Oxygen + Glucose Energy+ Carbon Dioxide + Water (ATP) Predictthe reactants. Given the reactants, and ATP, predict the rest.
Regents ReviewWhich substance is needed for aerobiccellular respiration to occur?1. oxygen2. carbon dioxide3. nitrogen4. methane
Cell Respiration Formula It’s photosynthesis but backwards!!!Photosynthesis:Carbon Dioxide + Water Oxygen + GlucoseRespiration:Oxygen + Glucose Carbon Dioxide + Water +Energy (ATP)NOTE: The energy is different – photosynthesis useslight energy; respiration takes glucose’s energy andmakes ATP
Regents ReviewIn what way are photosynthesis andcellular respiration similar?1. They both occur in chloroplasts.2. They both require sunlight.3. They both involve organic and inorganic molecules.4. They both require oxygen and produce carbon dioxide.
Regents ReviewWhich change in a sample of pondwater could indicate that heterotrophicmicrobes were active?1. increase in ozone level2. increase in glucose level3. decrease in oxygen level4. decrease in carbon dioxide level
Plants and animals havedifferent sources of glucose… Plants get glucose from photosynthesis Animals get glucose from eating sugars
Different sources, sameresult… Plants Animals
Getting this energy happensslowly Many different steps in Respiration Slowly so the energy won’t be lost fast ◦ Could burn off as heat/light if happens too fast ATP ATP ATP ATP ATP ATP ATP ATP ATP At each stage, we capture some energy and turn it into ATP chemical energy
Regents Review The diagram shows a mitochondrian. Letter X most likely represents 1. ATP 2. maltose 3. lactic acid 4. PGAL
Citations All pictures taken from PowerPoint clipart and Google Pictures