Notes 7.1 – Glycolysis

Cell Respiration Part 1Page 131

Standards

CLE 3210.3.3 Investigate the relationship between the processes of photosynthesis and cellular respiration.SPI 3210.3.3 Compare and contrast photosynthesis and cellular respiration in terms of energy transformation.

Objectives

Identify the reactants and products of GlycolysisEvaluate situations when a cell must use anaerobic vs. aerobic respirationSummarize the major events in Glycolysis

Find a Partner

Dogs

Tell your partner what making a bond means in terms of energy?

Ducks

Tell your partner what breaking a bond means in terms of energy?

With your Partner:

Look up the definition of “cellular respiration” Determine if both plant and animal cells can perform cellular respiration.

Give evidence to support your answer.

Electron Transport Chain

Overview of Cell Respiration

Equation:

Three Main Parts: --

Glycolysis – Happens in cytosol

Krebs Cycle– Happens in mitochondria

C6H12O6 + O2 CO2 + H2O + ATP (energy)

Glycolysis

Reactants:

Products:

Glucose, 2 ATP, NAD+

Pyruvate – moves to Kreb Cycle H2O – becomes part of cytosol 4 ATP – used by cell NADH – moves to electron transport chain

With your partner

Think about the following question:

If Glycolysis makes 2 molecules of water,why do we need to drink water?

Net Gain

What if I told you that if you put 50 cents into a vending machine, it would give you a dollar?

Would you put in 50 cents?Why?What would be your profit?Profit (Net gain) = amount gained - amount invested

Net Gain_____ ATP are required to start Glycolysis

_____ ATP are produced

______ = the net gain of energy produced by Glycolysis

2

4

2

What happens to Pyruvate?

Two possible paths:

Pyruvate

Aerobic Respiration

(mitochondria)

Fermentation (cytosol)

Lots of ATP

Some ATP

With your Partner

Look in the book and list 2 situations where fermentation is used instead of aerobic respiration.

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