Cellular Respiration

Georgia Performance Standards:
SB3a. Explain the cycling of energy through the processes of photosynthesis and cellular respiration.
Cellular Respiration
Unit Essential Question: How might the processes of photosynthesis and cellular respiration be like a cycle? Explain your reasoning.
Daily Essential Question: Describe how the process of cellular respiration converts energy from your food into ATP.
Activation: Talking Drawing
“Cellular Respiration”
Directions: Close your eyes for 10 seconds and envision the concept of “cell respiration.” Now open your eyes and illustrate (draw) your idea and label all parts explaining where necessary for clarity.
Example: this is what I might draw if asked what photosynthesis might look like.

Watch the song clip below: After watching the clip, you will summarize the basics of cellular respiration.
Think-pair-share: What does this remind you of that we have studied? Take 30 seconds to write down your thoughts individually, this means alone. Next you will spend 30 seconds discussing it with a partner and you will come to a consensus. Finally, we will discuss it as a class.
Cellular Respiration Defined
Cellular Respiration – simply put it is when cells break down simple food molecules such as glucose and release the energy they contain.
Your Turn: Create one of the following for the concept of cellular respiration;
1)  An analogy (cellular respiration is like… because)
2)  A riddle (you give clues about the topic in a tricky way)
Cellular Respiration Equation

Something to Contemplate: Without discussing it, write down your thoughts when you analyze the equation. Does it remind you of anything you have seen before, if so why?
What do you think the main point of cellular respiration might be?
Watch the video clip and explain the answer to the question above. Note the main steps in the process while watching.
Three Stages of Cellular Respiration
Stage 1: (Glycolysis) Glucose molecules are broken down into smaller molecules in the cytoplasm. And it makes 2 ATP.
Stage 2: (Krebs Cycle) small molecules are broken down even smaller; it requires oxygen (aerobic); a lot of energy is released (in mitochondria)
What is a good “analogy” for the mitochondria?
Stage 3: (Electron Transport Chain) – a lot of energy is released (in mitochondria) Makes 36 ATP.

What are the REACTANTS of Cellular Respiration?
What is a REACTANT and does it come before or after the arrow?
What are the PRODUCTS of Cellular Respiration?
What is a PRODUCT and does it come before or after the arrow?

Anaerobic (Without Oxygen) Respiration
Fermentation
Fermentation an energy process (like Respiration) that DOES NOT require oxygen (there are two types).
Note: It does not produce any energy on its own. Instead, it resets the cell so it can go through glycolysis.
What are some of the purposes of FERMENTATION?
Watch the clip and explain the answer to the above question. You MUST name at least two.
Type: Alcoholic Fermentation
Alcholic - fermentation that occurs in yeasts and single celled bacteria; produces alcohol,
Carbon dioxide, and energy.

Type: Lactic Acid Fermentation

Lactic acid- fermentation that occurs when cells Lack oxygen; a build up of lactic acid makes the muscles feel weak and burn.
YEAST
·  Yeast is a single celled fungus.
·  There are many different types.
·  Some are used to make bread, pizza crust, etc.
·  Some are used to make alcohol.
YEAST Infections
·  Yeast grows in warm moist areas.
·  Babies get thrush, which is in the mouth or diaper areas.
·  Athletes get athlete’s foot, which is an infection on their feet from their feet being in hot sweaty sneakers too long.
Talking Drawing: Cellular Respiration Closing
Now that we have went through the details of cellular respiration and how and where it occurs. Draw the process again, labeling all parts of the diagram to illustrate how and why the process occurs.
Summary: Take your last drawing and compare and contrast it to the first drawing. Explain how they are similar and how they are different. Next, explain why you might have differences in the two drawings and any misconception you may have had in the beginning.