An organism is sealed in a chamber. Scientists measure the amount of carbon dioxide and oxygen in the chamber. In 3–5 sentences, explain how they can use the volumes of these gases to determine if photosynthesis or cellular respiration is occurring in in the chamber. Please explain it coherently and simply.

Answer 1

Scientists can determine if photosynthesis or cellular respiration is occurring in the chamber by measuring the volumes of carbon dioxide (CO2) and oxygen (O2) present. During photosynthesis, plants take in CO2 and release O2, leading to a decrease in CO2 levels and an increase in O2 levels. Conversely, during cellular respiration, organisms consume O2 and produce CO2, resulting in a decrease in O2 and an increase in CO2. By observing the changes in the gas volumes over time, scientists can infer which process is dominant in the chamber.