Respiration

Find the mitochondrion

Mitochondrion structure

Why does cell respiration matter?

• Converts all the forms of energy that we take in (food) into one form of energy for all cell processes.

Power Plant analogy

Other effects of respiration

• Source of our body temperature.

• The rate of respiration changes when we get a fever or exercise.

4 metabolic processes

• Glycolysis

• Oxidative decarboxylation

• Krebs (Citric Acid) cycle

• Electron Transport Chain/ Oxidative Phosphorylation

Glycolysis

• Big word little meaning

• Glyco- sugar

• Lys- breakdown

Oxidative decarboxylation

• Ox- presence of oxygen

• De – without, to lose

• Carb- carbon– Using oxygen to remove carbon results in CO2

phosphorylation

• Adding a phosphate to a molecule. – Oxidative phosphorylation– Photo phosphorylation– ATP phosphorylates enzymes

Phases of Respiration • In cytoplasm

– Glycolysis- is UNIVERSAL

• In Mitochondria– Oxidative Decarboxylation in matrix– Kreb’s Cycle- in matrix– ETC and OP on inner membrane

Respiration summary

Summary of productsProcess ATP NADH FADH CO2

Glycolysis - -

Oxidative

decarboxylation

- -

Kreb’s

ETC

Glycolysis summary

• One glucose 2 pyruvate

• two ATP are used, but four are produced, which nets 2 ATP

• 2 NAD+ are converted to NADH + H+

Glycolysis details 1

Glycolysis details 2

NAD as electron carrier

Oxidative Decarboxylation and Krebs cycle

Krebs details

Chemiosmosis

Happens in both photosynthesis and cell respiration

Electron transport chain

Summary of productsProcess ATP NADH FADH CO2

Glycolysis 2 2 - -

Oxidative

decarboyxlyation

- 2 - 2

Kreb’s 2 6 2 4

ETC 34