What products are made during respiration?
During aerobic respiration CO2 & water and during anaerobic respiration C2H5OH and water. In both cases energy is leberated.
The word equation for photosynthesis is: carbon dioxide + water --- glucose + oxygen. Glucose is used by the plant for growth and respiration, whilst oxygen is, somewhat controversially, a waste product. I say this because plants need O2 for the process of respiration, which releases energy from glucose.
Why is the aerobic respiration by most organisms a more complex metabolic pathway than the anaerobic respiration seen in yeasts and some bacteria?
During anaerobic respiration, such as fermentation, pyruvic acid and NADH form the products of alchohol and carbon dioxide and NAD+. In aerobic respiration there are many more steps in the Krebs cycle to make the products of carbon dioxide, NADH, ATP, and FADH2 from pyruvic acid.Therefore aerobic respiration is much more complex than aerobic respiration.