bioenergetics

• What is the main topic of biology paper 1 discussed in the video?

  Bioenergetics
• What are the main subtopics covered in bioenergetics?

  • Photosynthesis
  • Respiration
  • Metabolism
  • Aerobic vs. anaerobic respiration
• What is the word equation for photosynthesis?

  Carbon dioxide plus water converts to glucose and oxygen
• What is the balanced symbol equation for photosynthesis?

  6 CO2 + 6 H2O → C6H12O6 + 6 O2
• How do plants use glucose produced in photosynthesis?

  For respiration to make energy
• What are some uses of glucose in plants besides respiration?

  Making cellulose, amino acids, and storing as starch
• What are the limiting factors of photosynthesis?

  Light, temperature, and carbon dioxide
• What happens to the rate of photosynthesis as CO2 levels increase?

  It increases until it levels off
• Why does the rate of photosynthesis plateau at high CO2 levels?

  Other factors like light or temperature become limiting
• How do greenhouses help in industrial farming?

  They control carbon dioxide and temperature
• What happens to enzymes if the temperature becomes too high?

  They denature, stopping photosynthesis
• What is the word equation for respiration?

  Glucose plus oxygen converts to carbon dioxide and water
• What is the balanced symbol equation for respiration?

  C6H12O6 + 6 O2 → 6 CO2 + 6 H2O
• What is metabolism?

  All the chemical reactions in an organism
• What are the two types of chemical reactions in metabolism?

  Synthesis and decomposition reactions
• What does aerobic respiration require?

  Oxygen
• What does anaerobic respiration produce?

  Lactic acid
• What is oxygen debt?

  Need to repay oxygen after anaerobic respiration
• What happens to breathing rate after intense exercise?

  It increases to repay oxygen debt
• What are the key differences between aerobic and anaerobic respiration?

  • Aerobic respiration uses oxygen
  • Anaerobic respiration does not use oxygen
  • Aerobic produces more energy
  • Anaerobic produces lactic acid
• What are the main functions of respiration in organisms?

  • Energy production for cellular activities
  • Building larger molecules from smaller ones
  • Muscle contraction in animals
  • Maintaining constant body temperature
• What are the products of photosynthesis and respiration?

  Photosynthesis:

  • Glucose
  • Oxygen

  
  

  Respiration:

  • Carbon dioxide
  • Water