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Cellular respiration
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Cellular Respiration

Cellular Respiration

Slide 2

Cellular Respiration

Cellular Respiration

A catabolic, exergonic, oxygen (O2) requiring process that uses energy extracted from macromolecules (glucose) to produce energy (ATP) and water (H2O).

C6H12O6 + 6O2  6CO2 + 6H2O + energy

Slide 3

Question:

Question:

In what kinds organisms does cellular respiration take place?

Slide 4

Plants and Animals

Plants and Animals

Plants - Autotrophs: self-producers.

Animals - Heterotrophs: consumers.

Slide 5

Mitochondria

Mitochondria

Organelle where cellular respiration takes place.

Slide 6

Redox Reaction

Redox Reaction

Transfer of one or more electrons from one reactant to another.

Two types:

1. Oxidation

2. Reduction

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Oxidation Reaction

Oxidation Reaction

The loss of electrons from a substance.

Or the gain of oxygen.

C6H12O6 + 6O2 6CO2 + 6H2O + energy

Slide 8

Reduction Reaction

Reduction Reaction

The gain of electrons to a substance.

Or the loss of oxygen.

Slide 9

Breakdown of Cellular Respiration

Breakdown of Cellular Respiration

Four main parts (reactions).

1. Glycolysis (splitting of sugar)

a. cytosol, just outside of mitochondria.

2. Grooming Phase

a. migration from cytosol to matrix.

Slide 10

Breakdown of Cellular Respiration

Breakdown of Cellular Respiration

3. Krebs Cycle (Citric Acid Cycle)

a. mitochondrial matrix

4. Electron Transport Chain (ETC) and

Oxidative Phosphorylation

a. Also called Chemiosmosis

b. inner mitochondrial membrane.

Slide 11

1. Glycolysis

1. Glycolysis

Occurs in the cytosol just outside of mitochondria.

Two phases (10 steps):

A. Energy investment phase

a. Preparatory phase (first 5 steps).

B. Energy yielding phase

a. Energy payoff phase (second 5 steps).

Slide 12

1. Glycolysis

1. Glycolysis

A. Energy Investment Phase:

Slide 13

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