2 • Energy And ATP

Question 0

Synthesis of ATP

Answer 0

• Photophosphorylation (photosynthesis)
• Oxidative Phosphorylation (electron transport chain)
• Subtrate level phosphorylation (e.g.: glycolysis)

Question 1

Why do organisms need energy?

Answer 1

• Metabolism
• Movement
• Active transport
• Maintenance, repase and division
• Production of substances
• Maintenance of body temperature

Question 2

Roles of ATP

Answer 2

• Less energy released than glucose
• Smaller manageable quantities
• Immediate energy source (unstable phosphate bonds)

Source of energy for:
• Metabolic processes (build up macromolecules)
• Movement (muscle contraction)
• Active transport (changes shape of carrier cells)
• Secretion (form lysosomes)
• Activation of molecules (lowers activation energy)