Cellular Respiration, although the inputs and outputs seem easy, the process is very convoluted and complicated. Lucky for you, we’re going to simplify it to a point that is appropriate for a High School Biology student.
Keep in mind that Photosynthesis & Cellular Respiration are reciprocal reactions. What that means is that the requirements of Cellular Respiration are the products of Photosynthesis! Likewise, the products of Cellular Respiration are the requirements of Photosynthesis! Its a 3 Billion year long symbiotic relationship! (And you thought your month-long high school girlfriend was a long-term commitment!)
Here is the jist of what Aerobic (meaning with Oxygen present) Respiration entails…
- Uses 2 ATP to break down Glucose
- NADH & 4ATP (net gain +2 ATP) are created.
- The NADH goes to the Krebs Cycle.
- Uses Oxygen and Acetyl-CoA
- Makes 2 ATP, NADH, & FADH2 (both of which are electron carriers)
- Carbon Dioxide is given off as a byproduct.
- The NADH goes on to the ETC
Electron Transport Chain
- Uses Oxygen and NADH
- Make 32 ATP and Water (used as an electron acceptor)
Photosynthesis may seem like an easy topic, based on what you learned in middle school. But, as we go a little deeper into the processes of how Plants chemically create glucose from a gas, a liquid, and sunlight we find that it is a whole lot more interesting and complicated.
Below is a graphic organizer to show the parts of the chloroplast (where photosynthesis takes place), the reactants, the products, and the important molecules involved in both the Light & Dark Reactions.
- Light & Water enter the Thylakoid (or granum)
- Oxygen is released as a byproduct
- In the process, NADPH and ATP are charged and carry energy to the Dark Reactions.
- The ATP and NADPH, combined with Carbon Dioxide, create Glucose.
- The leftover NADP+ and ADP go back to the light reaction.
You don’t have to be Captain Planet to help protect the Earth. But you do need to ace this test to be a Super Student! Good Luck!
Take notes on “Energy Flow” (YouTube & PPT slides are available). Here is the PDF if you prefer notes on notability. If you’re going to do paper notes, you’ll need a blank sheet of computer paper folded twice to make three sections.
Then complete the review activity & turn in any outstanding activities from last week.
Today we’ll be covering human impacts on the environment and discussing the ecological case studies we read about last week. We’ll cover several topics including:
- Acid Rain
- Ozone layer depletion
- Mass Extinction
- Depletion of Natural Resources/Destruction of habitat
- Climate Change
- Invasive Species
After that, we’re going to play a game courtesy of the BBC. The game is called “Climate Challenge” and basically you get to run a country that is facing the threat of global climate change head on. You’ll have to balance protecting the earth, your citizens, and your job! Use the link below to reach the game (*note, if you are using a iOS device you will need to view this using the puffin app). Good luck, have fun, and learn something!