The Respiring Cell
Essential Question: What is cellular respiration and how does it
affect cell functions?
Metabolism
Many physical and chemical processes in living cells extract
energy from raw materials, such as atmospheric gasses and
dissolved carbohydrates
• Catabolism: _________________________
• Anabolism: __________________________
Respiration Defined
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Types of Respiration
Aerobic –
Anaerobic –
____________________ of plant tissue and components
Aerobic Respiration is Similar to __________________
Carbon dioxide, heat, and water are produced when a log is
burned in the fireplace.
During Respiration…
_______________, such as sugars are “burned” in the plant cells.
C6H12O6 + 6H2O + 6O2 → 6CO2 + 12H20 + Energy
Glucose + Water + Oxygen → Carbon + Water + Energy
(sugar)
Dioxide
The result is __________ of carbon dioxide, water, and energy.
Factors Affecting Respiration Rate
Because certain conditions require more or less energy for the
plant, respiration rates vary.
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Temperature
The rate of respiration increases as the temperature increases as
plants protect themselves from heat.
Level of Oxygen

 However, plants replace more oxygen than they use by the
process of _______________________________.
What would happen without sufficient amounts of oxygen?
C6H12O6 + 6H2O + 6O2 → 6CO2 + 12H20 + energy
Respiration rate would be ______________
Light
 In plants, ____________is required for photosynthesis.
 If photosynthetic rates _________, then more raw materials are
___________for respiration.
Growth Rate
 If plant tissues do not require energy, the respiration rate
_____________.
 Periods when a plant does not require energy:
• Mature –
• Dormant –