Download Cellular Respiration notes

I. What is Cellular Respiration?
Cellular Respiration is a series of chemical reactions that transforms the energy
in food molecules to usable energy.
Mitochondria: organelle where energy is made.
II. What is are the three steps in cellular respiration?
1.The first step in called Glycolysis which takes place in the cytoplasm. This
breaks down glucose molecules made during photosynthesis into smaller
molecules releasing electrons.
2. The second step takes place in the mitochondria and the smaller molecules
are broken down into carbon dioxide and more electrons are released.
3. The third step requires the presence of oxygen made during photosynthesis
and uses the electrons produced to release large amounts of energy called ATP.
III. What is the chemical equation for cellular respiration?
+ ATP
IV. What is Fermentation?
Fermentation is a chemical process that release energy from food molecules; it
begins and ends in the cytoplasm and does not involve mitochondria or use
oxygen! That’s the difference with cellular respiration!
Lactic Acid Fermentation
•
This takes place in our muscles and this process releases energy from glucose
and produce lactic acid and carbon dioxide as waste.
•
Cheese and yogurt are made from this process!
Alcohol Fermentation
This takes place in yeast cells (Fungi) and it produces ethanol (alcohol) instead
of lactic acid, but it also produces carbon dioxide.