Why did the elodea in the dark change the color of the solution?
In the dark, an elodea plant will turn a bromothymol blue solution yellow as it produces carbon dioxide as a product of respiration. An elodea plant exposed to light will turn yellow bromothymol blue back to the blue color as it uses carbon dioxide.
What is the purpose of the elodea lab?
The purpose of this lab is to determine the effects of elodea on CO2 levels and to observe evidence of cellular respiration and photosynthesis.
What were the bubbles given off by elodea in this experiment?
The procedure was to place Elodea under heat lamps and count the bubbles of photosynthesis in test tubes. A higher count of bubbles showed a higher rate of photosynthesis. The variables were photosynthesis and the distance of the light source.
Does Elodea produce carbon dioxide?
The relationship between snails and elodea is symbiotic in that the snail eats algae and produces carbon dioxide. The elodea takes in the carbon dioxide and, through photosynthesis, creates oxygen, which the snail and every living thing in the tank uses to breathe.
What does bromothymol blue indicate during photosynthesis?
The carbon dioxide can be used by organisms through photosynthesis, removing it from the atmosphere. Bromothymol blue (BMB) is an indicator dye that turns yellow in the presence of acid. When carbon dioxide is added to the solution, it creates carbonic acid, lowering the pH of the solution.
Why did the bromothymol blue change color?
When blowing carbon dioxide into a BTB solution, carbonic acid is formed, which changes the pH of the solution and makes it more acidic. As a result, the color of the solution changes from blue to yellow shades. The chemical structures of carbon dioxide and water are shown.
How does the bromothymol blue prove that photosynthesis is occurring?
What gas does Elodea release?
They produce carbon dioxide during cellular respiration.
How does Elodea take in carbon dioxide and produce oxygen?
How can I use Elodea to study photosynthesis? During photosynthesis, the plant absorbs carbon dioxide from the water and releases oxygen. Since oxygen is much less soluble in water than is carbon dioxide, the water quickly saturates with oxygen and bubbles form.