Photosynthesis and Cellular Respiration How do the processes

Photosynthesis and Cellular Respiration How do the processes of Cellular Respiration and Photosynthesis cycle energy? ATP – ADENOSINE TRIPHOSPHATE: Why do your cells need energy? - Where do your cells get the energy to do this work?

ATP Releasing food energy • - All the foods you eat are broken down into smaller and smaller molecules. These molecules are small enough to enter the cell membranes of your cells. Your cells then break these monomer molecules into even smaller pieces, releasing energy into your cells.

ATP • ATP as energy “money” • - Do your cells use all of the energy available in food molecules all at once? NO • - So it has to store the extra energy in the form of ATP(adenosine triphosphate)-SAVINGS ACCOUNT - ATP are your cell’s “MONEY” because this is where your cells get energy to do their work.

ATP • - Each ATP molecule is made of 3 phosphate groups. • Remember: Tri - = 3 • - When your cells need energy, enzymes break a bond, which releases 1 phosphate group from ATP, and ADP (adenosine diphosphate) is produced. ENERGY is then released. This formula is shown below: • ATP ADP + Phosphate group + energy SAVINGS CHECKING+MONEY TO SPEND!

ATP • When 1 phosphate group is added to ADP, energy is SAVED in the ATP that are produced. This formula is shown below: ADP + Phosphate group + energy ATP EXTRA MONEY------------- SAVINGS! • ATP can STORE more energy than ADP, because it has more BONDS.

Cellular Respiration is the process in which plant and animal cells breakdown glucose(food) molecules with oxygen to produce Carbon dioxide(CO 2), WATER(H 2 O), AND ENERGY(ATP) Respiration occurs in the mitochondria of plant and animal cells.

Cellular Respiration Two types of Respiration • All living things carry out this process in a different way because not all living things need as much energy as we do! Like bacteria and other unicellular organisms 1. Aerobic respiration(cellular respiration) -this is how we NORMALLY get energy and it is the BEST way to get energy Aerobic= with oxygen(O 2) -During aerobic respiration, Oxygen(O 2) is used to breakdown Glucose(food) molecules to produce Carbon dioxide(CO 2), WATER(H 2 O), AND ENERGY(ATP)

Cellular Respiration The equation for cellular respiration is: Oxygen + Glucose(food) = Carbon dioxide +WATER + ENERGY O 2 + C 6 H 12 O 6 = CO 2 + H 2 O + ATP

Cellular Respiration 2. Anaerobic respiration EX. Lactic acid fermentation -some organisms like bacteria and other unicellular living things do not need oxygen to make energy -releases energy without oxygen -anaerobic=without oxygen(O 2 -this process releases LESS energy! They don’t need as much! Anaerobic=without Oxygen(O 2) This is how bacteria and yeast make cheese and yogurt, YUMMY!

Anaerobic respiration • We can produce energy using this process during extreme exercise! Our muscles feel sore with a burning sensation because this process produces lactic acid in your muscle cells! • http: //www. youtube. com/watch? v=Cpz. LZsawt. PY

SUMMARY!! • Photosynthesis and cellular respiration are complimentary processes for cycling oxygen and carbon dioxide on Earth • **They are also complimentary processes for energy transfer among organisms on Earth. • The end products of photosynthesis are the starting reactants for cellular respiration…. • AND (vice versa) • The end products of cellular respiration are the starting reactants for photosynthesis