Photosynthesis And Cellular Respiration Energy and Life Energy

Photosynthesis And Cellular Respiration

Energy and Life • Energy is the capacity to do work • All living things require energy • Cell “work” that requires energy to – Grow – Reproduce – Transport – Move 2

Photosynthesis • Photosynthesis: The process that plants and some single-celled organisms use to make glucose (sugar). • Photosynthesis occurs in the Chloroplast – Takes in CO 2 and H 2 O from the environment – Converts sunlight energy into chemical energy in the bonds of glucose 3

Draw Photosynthesis 4

Chemical Equation for Photosynthesis Energy from the sun Carbon Dioxide + Water = Glucose + Oxygen ___CO 6 6 2 O C 6 H 12 O 6 + ___O 6 2 2 + ___H 5

Chemical Equation for Photosynthesis Energy + Carbon Dioxide + Water = Glucose + Oxygen (From the sun) Reactants Products 6

Glucose produced by photosynthesis can then be… • Used for energy in cellular respiration • Glucose is like the plant’s food. • It is converted to starch and stored in the plant. 7

Cellular Respiration – the process where the energy stored in the chemical bonds of glucose is converted to energy (ATP). 2 Types: - Aerobic (with oxygen) - Anaerobic (without oxygen/fermentation)

What is ATP? • ATP: Adenosine Triphosphate. • Energy source in the cell

Where does cellular respiration occur inside the cell?

The Mitochondria “The Powerhouse of the Cell” “The Mighty Mitochondria”

Chemical Equation for Cellular Respiration Glucose + Oxygen = Carbon Dioxide + Water + Energy 6 6 2 O + 36 -38 C 6 H 12 O 6 + ___O ____ATP 6 2 ___CO 2 + ___H

Chemical Equation for Cellular Respiration Glucose + Oxygen = Carbon Dioxide + Water + Energy (ATP) Reactants Products

Card Sort Activity • Go to your lab station and sort the cards into the correct equations for Photosynthesis and Cellular Respiration. • You may NOT use your notes! Discuss with your group and make your best guess if you are unsure. • Raise your hand when finished and I will check them. • If your group gets both equations correct on the first try, then you get Bonus Bucks!

Compare the Equations • After the card sort, look back at the equations. • What did you notice about the Chemical Equations for Photosynthesis and Cellular Respiration? 15

Compare the Equations • After the card sort, look back at the equations. • What did you notice about the Chemical Equations for Photosynthesis and Cellular Respiration? The equations are the inverse of each other! 16