Skills 3 & 4 -

Cellular respiration

Skill 3: Define the relationship between cellular respiration and photosynthesis.

Relationship between photosynthesis and cellular respiration

When comparing the two processes below, answer the following questions for each process:

Does it store or release energy?

Is glucose being created or broken down? (synthesis or decomposition)

What are the reactants and products?

Now describe the relationship between photosynthesis and cellular respiration.

How is this relationship mutually beneficial for plants and animals?

Generators burn gasoline in the presence of oxygen to release electricity.

Car engines burn gasoline in the presence of oxygen to release power to turn the wheels.

What does it mean when we say that mitochondria are the "powerhouse of the cell?"

Use the diagram above to answer the following questions.

1. Decode the word 'glycolysis'

glyco -

lys -

sis -

2. Where in the cell does glycolysis take place?

3. In which organelle does cellular respiration happen (Krebs cycle and electron transport chain)?

4. What are the two parts of cellular respiration which take place after glycolysis?

Energy in organisms

Which organisms need energy to survive? (Think back to the 8 characteristics of life.)

Which organelle is used for cellular respiration?

Research to find out which type of organism is an exception to the rule and does not have that organelle to release energy with.


Skill 4: Between cell respiration and fermentation, which process for releasing energy provides more ATP? Why do we have the other one, then?

What's the difference between aerobic and anaerobic energy releasing processes?

*Sir Hans Adolph Krebs discovered part of the process of cellular respiration, now known as the Krebs' cycle, or citric acid cycle. See the diagram of the mitochondrion on this page. He received the Nobel Prize for physiology or medicine in 1953, along with Fritz Lipmann, for this discovery.

https://www.britannica.com/science/tricarboxylic-acid-cycle

Click below to read about how plants absorb carbon dioxide, which is good for reducing carbon emissions, but also how they release carbon dioxide into the air.