Cellular respiration

• What is the purpose of cellular respiration in organisms?

  To release energy to fuel their living processes
• What are the two types of respiration mentioned?

  Aerobic and anaerobic respiration
• What does aerobic respiration use to produce energy?

  Glucose and oxygen
• What does anaerobic respiration use to produce energy?

  Only glucose
• What is the difference between respiration and photosynthesis?

  • Respiration releases energy (exothermic)
  • Photosynthesis requires energy (endothermic)
  • Respiration occurs in cells, while photosynthesis occurs in plants and some bacteria
• Why is respiration considered an exothermic reaction?

  Because it releases energy to the surroundings
• What happens to the temperature of the surroundings during respiration?

  The temperature increases
• What is the role of carbohydrates in organisms?

  To provide energy and build complex molecules
• What are proteins needed for in the body?

  Cell growth and repair
• What are lipids composed of?

  Fatty acids and glycerol
• What is the process of photosynthesis?

  A chemical process used by plants to make glucose and oxygen from carbon dioxide and water using light energy
• What is the function of the phloem in plants?

  To transport the products of photosynthesis
• How efficient is respiration in terms of energy release?

  It is around 40 percent efficient
• How is heat distributed in birds and mammals during respiration?

  By the blood
• What is homeostasis?

  The maintenance of steady conditions in the body
• What is active transport?

  The transport of molecules against their concentration gradient
• What are nerve impulses?

  Electrical signals that travel along the nerve fiber
• What are the main uses of energy in organisms?

  • To drive chemical reactions
  • For movement
  • For cell division
  • To maintain homeostasis
  • For active transport
  • For transmission of nerve impulses