National 4/5 BiologyRespiration

c. ATP and the chemistry of respiration

What have I learned?White boardsAnswer the following:1. What is respiration?2. What raw materials are required for

respiration to take place?3. How do these raw materials enter the cells?4. What are the products of respiration?5. Where in the body does respiration occur?6. Suggest a cell(s) that may have a lot of

mitochondria?

What are we learning today?We are learning to:State what ATP is?State what ATP is used for?Describe the processes involved in aerobic

respiration

Success criteria:ATP and how it supplies energyAerobic respiration in terms of glycolysis and

how many ATP are produced

Adenosine Triphosphate (ATP)ATP is an immediate stored source of energy found in

most cells

ATP has the following structure

Adenosine Pi Pi Pi

1 molecule of adenosine

3 molecules of inorganic phosphate

What is ATP? cont’d

For the energy stored in ATP to be released it has to be broken down to ADP and Pi

releasing energyATP ADP + Pi

high energy build up requiring energy low energy

When energy is stored ADP and Pi are converted back into ATP

Role of ATPATP makes energy available for energy requiring

processes: - muscular contraction - cell division - protein synthesis - transmission of nerve impulsesATP is the link between energy consuming, and

energy releasing reactions

Chemistry of RespirationRespiration is the re-generation of ATP

It is a complex series of biochemical reactions

Aerobic RespirationWhat is involved?

Occurs in presence of oxygenGlycolysis

Means glucose splittingGlucose is split into 2 molecules of pyruvic acidThe pyruvic acid goes through many more enzyme

controlled reactions releasing carbon dioxide and finally producing water

As the reactions proceed ATP is generated38 ATP molecules are produced for every molecule of

glucose

RecapWrite an exit summary to tell me the following:What is ATP?What is ATP used for?How does ATP supply energy?Describe the processes involved in aerobic

respiration:What is glycolysis?What is glucose split in to?How many ATP are produced per glucose

molecule?