AIM- What are the 2 types of respiration? Homework-first quarter review packet due tomorrow!

2 Types of Respiration

Aerobic Respiration Oxygen is required. Occurs in the mitochondria. 36 ATP are produced. Occurs in animals and plants.

Structure of the mitochondria:

Occurs in 3 stages: 1. Glycolysis Occurs in the cytoplasm 1 glucose is broken in half to form 2 molecules of pyruvic acid. 2 molecules of ATP get glycolysis going, 4 ATP are produced in the process for a net gain of 2 ATP.

2. Kreb’s Cycle Occurs in the mitochondrial matrix. Pyruvic acid gets broken down into CO2 2 ATP are produced here.

3. Electron Transport Chain Occurs in the cristae A protein called ATP synthase attaches phosphates to ADP molecules forming ATP. Almost all of the ATP created during cellular respiration is produced during this step.

Formula: C6H12O6+6O2  6CO2+6H2O+Energy *Reaction is controlled by a series of enzymes.

Anaerobic Respiration Also known as Fermentation. Occurs in the cytoplasm. Produces 2 ATP. Occurs in some bacteria and yeast. 2 types- lactic acid fermentation and alcoholic fermentation.

Lactic Acid Fermentation Glucose  lactic acid + 2ATP Can occur in human muscle cells during periods of strenuous activity and oxygen deprivation. Performed by some bacteria.

Alcoholic Fermentation Glucose alcohol + CO2 + 2ATP Performed by yeast and certain bacteria. Important for wine making and brewing industries.