Download
settler n.
Skip this Video
Loading SlideShow in 5 Seconds..
Settler PowerPoint Presentation

Settler

4 Vues Download Presentation
Télécharger la présentation

Settler

- - - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript

  1. Settler Students answer their question then pass it on to the next group to see if they can add any further detail.

  2. Module 4Respiration 1.4.1 Why do living organisms need to respire

  3. Starter • Answer question in pairs and pass onto next group • Discuss

  4. Success Criteria Learning Objectives Why living organisms require energy How ATP stores energy How ATP is synthesised and broken down The role of ATP in biological processes Describe biological processes that require energy (Grade D) Describe the condensation and hydrolysis reactions that form and break down ATP (Grade C) Explain how the chemical structure of ATP enables it to store energy (Grade B/C) Explain how ATP functions as an immediate energy source in biological processes (Grade A/B)

  5. What do you know about energy? • What different forms of energy can you think of? • What do living things need energy for?

  6. Metabolism • All the reactions that take place in an organism are known as metabolism • Anabolic – metabolic reactions that build large molecules • Catabolic - metabolic reactions that break large molecules into smaller ones

  7. Living organisms need energy! Growth secretion Active transport Activations of chemicals Metabolic reactions that require energy Movement Making enzymes, hormones etc. • Powers cells • division • repair damage • - maintain organelles Muscle contraction Maintaining body temperature in endotherms

  8. base (adenine) Structure of adenosine triphosphate (ATP) phosphates (3) sugar(ribose)

  9. Adenosine triphosphate + + + 30.5kJ  inorganic phosphate ATP H2O ADP ATP contains a sugar (ribose), a base (adenine) and three phosphate groups. adenine ribose phosphates When ATP is hydrolysed to form ADP and inorganic phosphate, 30.5kJ of energy are released.

  10. ATP is an energy store • ATP stores/release small manageable amounts of energy at a time, so less waste • Small soluble so easily transported

  11. The ATP cycle Broken down (Phosphate group removed) 30.6 kJmol energy released. ADP + Pi HYDROLYSIS ATP CONDENSATION Phosphate group added – phosphorylation. Energy taken in.

  12. Task • Answer questions 1 - 4 on p81

  13. 1 (b) With reference to the above diagram, describe and explain the role of ATP in the cell (3)