Cell respiration and photosynthesis
Storyboard Text
- Well Jake, photosynthesis is the process that helps plants transform light energy into chemical energy which is then use to help the plant grow.
- Todays lesson:-Cell Respiration -Photosynthesis
- What is photosynthesis?
- 6CO2 + 6H2O → C6H12O6 + 6O2The reactants, carbon dioxide and water molecules, are converted by light energy in the chloroplast that is captured by chlorophyll and converted into a glucose molecule and six oxygen molecules, the products.
- Glucose and oxygen are then used in a process called cell respiration. Cell respiration converts oxygen and glucose into water and carbon dioxide. Water and carbon dioxide are the by products and ATP is the energy that is created.
- What happens to the glucose and oxygen?
- C6H12O6 + 6O2 → 6CO2 + 6H20Cellular respiration works in three main steps, glycolysis, Krebs cycle and the electron transport. Glycolysis splits glucose, enzymes split a molecule into two molecules of pyruvate. The Krebs cycle produces citric acid, which has six carbon atoms. After citric acid forms, it goes through a series of reactions that release energy. The energy is captured in molecules of NADH, ATP, and FADH2.High-energy electrons are released from NADH and FADH2. Mitochondria is where cell respiration takes place.
- Wow ! Now we know how cell respiration and photosynthesis are dependent on each other and how they both work !
- Today we learned how photosynthesis removes carbon dioxide from the air and cell respiration puts back. Photosynthesis releases oxygen into the atmosphere, and cellular respiration uses that oxygen to release energy from food . Its a cycle !
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