Cellular Respiration

The First Law of Thermodynamics

Energy cannot be created or destroyed, only transformed.

The Second Law of Thermodynamics

Every reaction has some energy lost as heat to the environment.

In catabolic reactions, molecules are…

Digested

In anabolic reactions, molecules are…

Synthesized

Endergonic reaction

Energy goes into the products in a reaction.

Exergonic reaction

Energy goes out of the products in a reaction.

What is the purpose of cellular respiration?

To convert energy from our food into fuel that our bodies can use in the form of ATP.

What is the equation for cellular respiration?

C6H12O6 + 6O2 —> 6CO2 + 6H2O (+ ATP)

Explain the location, reactants, and products of glycolysis.

Location: Cytoplasm

Reactants: Glucose

Products: 2 ATP, 2 NADH, 2 Pyruvic Acid

Explain the location, reactants, and products of the krebs cycle

Location: Matrix of Mitochondria

Reactants: 2 Pyruvic Acid

Products: 2 ATP, 8 NADH, 2 FADH2, 6CO2

Explain the location, reactants, and products of ETC

Location: Inner membrane of mitochondria

Reactants: 10 NADH, 2 FADH2, 6O2

Products: 34 ATP, 6H2O

What is the final electron acceptor and what does it become?

O2 bonds with the H+ bonds to form H2O

Describe the difference between aerobic and anaerobic respiration.

Aerobic: Produces 38 ATP, requires oxygen, includes the krebs cycle/ETC

Anaerobic: Produces 2 ATP, produces lactic acid in animals and ethanol in yeast, does not use oxygen

Both: Include glycolysis

What does pyruvate turn into before entering the krebs cycle?

Acetyl CoA.