Thursday, March 12, 2015

Introduce Photosynthesis & Cellular Respiration Poster Project; NOTES & INFO HERE!

-We're changing it up! :) Instead of a written assessment (test) for this chapter, we're going to do a project. Here are the details...
Photosynthesis and Cellular Respiration Poster Project

-These videos will give a general overview of the similarities/differences: photosynthesis vs. cellular respiration   photsynthesis & food 

(printable version of the information below: photosynthesis/cellular respiration notes

PHOTOSYNTHESIS: The process by which carbon dioxide, sunlight, and water are converted into carbohydrates and oxygen
Who does it? plants, algae, & some prokaryotes (we'll focus on plants)
Where does it occur? inside the chloroplasts, organelles found in plant cells 
Why is it important? it produces glucose and oxygen which are needed for cellular respiration (and sustains all life on earth!) 

Overview of process: 
carbon dioxide + water + light energy from sun ----> glucose (sugar) + oxygen
Chemical equation:
6CO+ 6H2O + light energy ------> C6H12O+ 6O2

3 Stages of Photosynthesis:
1. Light Reactions - energy from the sun is used to split water in an H+ (hydrogen ion) and an O2; oxygen diffuses out of chloroplasts as a byproduct.
2. Light energy is converted to chemical energy; temporarily stored in ATP & NADPH (nicotinamide adenine dinucleotide phosphate) 
3. Calvin Cycle - carbon is fixed into glucose; fixed = converting inorganic compounds like carbon dioxide into organic compounds like glucose

Image result for photosynthesis


CELLULAR RESPIRATION: Process used by humans and most other organisms to release the energy stored in the food they consume.
Who does it? All living organisms
Where does it occur? Step 1 occurs in cytoplasm, the rest of the process occurs in the mitochondria of plant & animal cells
Why is it important? It produces ATP, the fuel needed by cells to perform all necessary functions and maintain life!

Overview of process:
glucose + oxygen ---> carbon dioxide + water + energy
Chemical equation:
C₆H₁₂O₆ + 6O₂ → 6CO₂ + 6H₂O + ATP (energy)

3 Stages of Cellular Respiration:
1. Glycolysis: occurs in cytoplasm of plant & animal cells; glucose is broken down into 2 pyruvate molecules.
2. Krebs Cycle: takes place in the matrix (inside) of a cell's mitochondria; breaks down pyruvate into carbon dioxide, or CO₂.
3. Electron Transport Chain: takes place in the inner mitochondrial membrane of cells; electrons and hydrogen ions (H+) are shuttled across the mitochondrial membrane to produce ATP for energy.

Image result for simple cellular respiration diagram

CLICK HERE FOR MS. FERRO'S EXAMPLE POSTER 
PAGE 1 & PAGE 2

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