Bioenergetics

• Where does photosynthesis occur in plant cells?

  In chlorophyll and chloroplasts
• What is the role of light in photosynthesis?

  It provides energy for the reaction
• What type of reaction is photosynthesis?

  It is an endothermic reaction
• What is glucose used for in plants?

  For respiration, starch, or fat storage
• What is cellulose used for in plants?

  To produce cell walls
• How does temperature affect the rate of photosynthesis?

  Higher temperatures increase the rate until denaturing
• What can limit the rate of photosynthesis?

  Light intensity, temperature, or CO2 concentration
• What happens if there is plenty of CO2 and warmth but not enough light?

  The rate of photosynthesis will be limited
• What does a graph of photosynthesis rate indicate?

  The x-axis variable is the limiting factor
• How can we measure the rate of photosynthesis practically?

  By measuring oxygen volume from pondweed
• What is the independent variable in the photosynthesis experiment?

  Light intensity, changed by distance
• What relationship does light intensity follow?

  Inverse square relationship
• Where does respiration take place in cells?

  In mitochondria
• What is aerobic respiration?

  Respiration that occurs with oxygen
• What is the balanced chemical equation for aerobic respiration?

  Opposite of photosynthesis equation
• What happens to breathing and heart rate during exercise?

  They increase to deliver more oxygen
• What occurs during anaerobic respiration?

  Glucose converts to lactic acid
• What is oxygen debt?

  More oxygen needed to break down lactic acid
• How do plant and yeast cells respire anaerobically?

  Glucose turns into ethanol and CO2
• What is fermentation?

  Process of anaerobic respiration in yeast
• What is metabolism?

  Sum of all reactions in a cell
• What can glucose be converted into?

  Starch, glycogen, cellulose, amino acids
• What are amino acids used for in plants?

  For protein synthesis
• What are fatty acids and glycerol built into?

  Into lipids
• What happens to excess proteins in the body?

  They are converted into urea
• What is the purpose of the video mentioned?

  To provide helpful information on the topic