I can't find the info I need for Biology homework!?

Question

I need to make notecards answering some questions. They have to do with Bromthymol Blue. The problem is: "What reationship exists between aquatic plants (Elodea) and animals (snails) in the cycling of matter?"

The questions I haven't found the answers to are:
1. Which cycle is being investigated?
2. What substances are involved?
3. Which organisms produce which substances?
4. Which organisms use which substances?
5. What processes are involved?

Some internet sources in which I could find the answers to these questions would be a lifeaver to me! Thanks so much!

Answer 1

In this experiment, the Elodea, snail, and bromthymol blue are put in the same container of water.

Bromthymol blue is an indicator that changes color according to the amount of carbon dioxide in the water. If a bromthymol blue is the color blue, you can blow bubbles of your breath through a straw and turn the solution to a yellowish color.

So - not much carbon dioxide = blue
- more carbon dioxide = yellowish

If you turn a bromthymol blue solution yellow in this way, and then you put a piece of the water plant Elodea in the solution and leave it in the light, the Elodea does photosynthesis. Photosynthesis uses up the carbon dioxide in the water. After a time the solution looks blue again because the carbon dioxide is lower.

If you have both Elodea and a snail in the solution, the Elodea takes carbon dioxide out of the water while it is making glucose during photosynthesis. The snail puts carbon dioxide into the water as it breaks down glucose during cellular respiration. The Elodea does cellular respiration, too.

1. The cycle is the carbon cycle.
2. Photosynthesis uses carbon dioxide and water to produce glucose (C6H12O6) and oxygen. Cellular respiration uses glucose and oxygen to produce carbon dioxide and water. The carbon dioxide and glucose are parts of the carbon cycle.
3. Elodea makes glucose during photosynthesis.
The Elodea and the snail both make carbon dioxide during cellular respiration.
4. The Elodea uses carbon dioxide from the water.
Both the Elodea and the snail use glucose during cellular respiration.
5. The processes are photosynthesis and cellular respiration.

Note: The reason the bromthymol blue changes color when there is more carbon dioxide is that the bromthymol blue indicates acid by turning yellow. When carbon dioxide dissolves in water, it makes the water acid by combining with the water to make some carbonic acid.

Answer 2

there might want to correctly be a tremendous number of solutions to 4, yet when we are speaking about bio, and photosynthesis rather, the molecule loses electrons even as this is hit by utilizing sunlight hours. I took Ap bio like 2 years in the past, i think its the p700 and p680 the position the sunlight hours hits and receives rid of electrons from. The electrons are then transferred to the and so on (electron shipping chain).