Respiration 17/04. Flashcards
What are the uses of energy in living organisms?
- Muscle contraction.
- Protein synthesis.
- Cell division.
- Active transport.
- Growth.
- The passage of nerve impulses.
- The maintenance of a constant body temperature.
Investigate and describe the effect of temperature on respiration in yeast.
When temperature increases, the rate of respiration increases as well because the heat speeds up the reactions which means kinetic energy is higher.
The higher the temperature, the more carbon dioxide will be released by yeast, forming greater bubbles. Once the temperature gets above a certain point, the respiration rate will decrease.
What is aerobic respiration?
Aerobic respiration as the chemical reactions in cells that use oxygen to break down nutrient molecules to release energy.
What is the word equation for aerobic respiration?
Glucose + oxygen → carbon dioxide + water.
What is the balanced chemical equation for aerobic respiration
C₆H₁₂O₆ + 6O₂ → 6CO₂ + 6H₂O.
What is anaerobic respiration?
Anaerobic respiration as the chemical reactions in cells that break down nutrient molecules to release energy without using oxygen.
What is the energy comparison of anaerobic respiration to aerobic respiration?
Anaerobic respiration releases much less energy per glucose molecules than aerobic respiration.
What is the word equation for anaerobic respiration in yeast?
Glucose → alcohol + carbon dioxide.
What is the word equation for anaerobic respiration in muscles during vigorous exercise?
Glucose → lactic acid.
What is the chemical equation for anaerobic respiration in yeast?
C₆H₁₂O₆ → 2C₂H₅OH + 2CO₂
What builds up in muscles and blood during vigorous exercise?
Lactic acid builds up in muscles and blood during vigorous exercise causing an oxygen debt.
How is oxygen debt is removed after exercise?
- Continuation of fast heart rate to transport lactic acid in the blood from the muscles to the liver.
- Continuation of deeper and faster breathing to supply oxygen for aerobic respiration of lactic acid.
- Aerobic respiration of lactic acid in the liver.
