Question

Respiration is defined as a biochemical process consisting of oxidation and degradation of food with release of energy.
a) Differentiate between aerobic and anaerobic respiration.
b) $C_6{H}_{12}{O}_6\underset{zymase}{\overset{yeast}{\to }}$ ____________ $+2C{O}_2+50KJ$ energy
c) List out the factors affecting respiration.

Answer 1

a) Aerobic respiration-

• Breakdown of glucose in presence of oxygen.
• The complete breakdown of glucose to carbon dioxide and water
• Release a high amount of energy.
  

Anaerobic respiration-

• Takes place in absence of oxygen
  
• Partial breakdown of glucose into ethanol or lactic acid depending on the pathway.
• Releases a lower amount of energy.
  

zymase

b) C₆H₁₂O₆ --------------------> C₂H₅OH + 2CO₂ + 50KJ energy

yeast

c) Factors affecting respiration in plants-

• Age- young plants have higher rates of respiration
  
• Temp- respiration decreases when the temp is low
• O₂- lower the amount of O₂, lower the respiration
• CO₂- higher the CO₂, lower the respiration.
• Lack of water decreases respiration
• Damage in plant cell decreases the rate of respiration