Question

A scientist places a plant in an enclosed system. After five days, she determines that the amount of carbon

dioxide has increased and the amount of oxygen has decreased. How can her findings be explained?

Answer 1

Carbon dioxide contributes to air pollution in its role in the greenhouse effect. Carbon dioxide traps radiation at ground level, creating ground-level ozone. This atmospheric layer prevents the earth from cooling at night.

Step-by-step explanation:

Answer 2

The rate of CO2 usage for photosynthesis where O2 is produced, outpaces the rate of O2 use in respiration and photorespiration.

Step-by-step explanation:

Photosynthesis is a chemical pathway that’s integral to producing energy in plants and other primary producers. Energy in the form of molecules of glucose is produced from light, water and carbon dioxide while oxygen is released. This occurs in several complex steps, photosynthesis is a rate limited reaction, depends on several factors including carbon dioxide concentration, ambient temperature and light intensity; the energy is retrieved from photons, I.e.particles of light, and water is used as a reducing agent.

Reactions like 1.) Respiration and 2.)photorespiration both utilize some oxygen for;

• the production of ATP via the oxidization of pyruvate;
• and the oxygenation of the molecule Ribulose 1,5-bisphosphate (RuBP), an organic molecule also used in photosynthesis, to form 3-PGA + phosphoglycolic acid,

However, these reactions are not using oxygen in signofiant enough amounts for equilibrium with CO2 use.

∴ the rate of CO2 usage for photosynthesis where O2 is produced, outpaces the rate of O2 use in respiration and photorespiration.