subject
Biology, 26.02.2020 03:18 pandadude123

I will give a lot of points to whoever actually answers this. The first person who correctly answers this gets BRAINLIEST
All organisms are dependent on a healthy carbon dioxide-oxygen balance. Photosynthesis and cellular respiration are key processes in maintaining this balance. Your class is conducting a lab experiment to investigate the relationship between photosynthesis and cellular respiration by observing how carbon dioxide cycles through a biological system. To conduct the experiment, each group set up four test tubes containing 30 ml distilled water and 3 ml of bromothymol blue. Bromothymol blue is a pH indicator that changes from blue (alkaline) to yellow (acid). When carbon dioxide dissolves in water, it produces carbonic acid, turning the indicator from blue to yellow. The level of CO2 was inferred from a change in the indicator color.
A snail, elodea (aquatic plant), or both were added to the tubes and they were stoppered. Tubes were placed under a grow light for 24 hours and the results recorded. The test tubes were then covered for 24 hours to produce a dark environment and the results recorded. Which statement best explains the change in Test Tube D from the light setup to the dark setup.
A) The rate of photosynthesis decreased in the dark, thus the elodea used less CO2. The elodea and snails produced less CO2 through cellular respiration, causing the CO2 to be in equilibrium, making the solution more neutral (yellow).
B) The rate of photosynthesis decreased in the dark, thus the elodea used less CO2. The elodea and snails continued to produce CO2 through cellular respiration, raising the level of CO2 in the tube, causing the solution to become more acidic (yellow).
C) The rate of photosynthesis decreased in the dark, thus the elodea used more CO2. The elodea and snails continued to consume CO2 through cellular respiration, lowering the level of CO2 in the tube, causing the solution to become more basic (yellow).
D) The rate of photosynthesis decreased in the dark, thus the elodea used less CO2. The elodea and snails continued to consume CO2 through cellular respiration, raising the level of CO2 in the tube, causing the solution to become more acidic (yellow).
Carbon DIoxide Production in Snails & Elodea
Test Tube Contents, Initial Color, Light Set Up, Dark Set Up
Tube A: control, green, green, green
Tube B: elodea, green, blue, green
Tube C: snail green, yellow, yellow
Tube D: elodea and snail, green, green, yellow

ansver
Answers: 1

Other questions on the subject: Biology

image
Biology, 22.06.2019 04:00, deee12345
The distribution of related animals and plants across the world
Answers: 3
image
Biology, 22.06.2019 06:30, kenaygardel
To sciences do not agree on which type of grocery bag is better for the environment what is most likely to come out come out of the disagreement
Answers: 3
image
Biology, 22.06.2019 15:30, adriannacomrosenbark
The most effective way to provide children with safety messages is to
Answers: 3
image
Biology, 22.06.2019 17:30, hausofharris
In the first stage of the nuclear fuel cycle the spent fuel must be transported, processed, and disposed of properly. true or false
Answers: 2
You know the right answer?
I will give a lot of points to whoever actually answers this. The first person who correctly answers...

Questions in other subjects:

Konu
Mathematics, 12.04.2021 20:00
Konu
Mathematics, 12.04.2021 20:00
Konu
Mathematics, 12.04.2021 20:00
Konu
Computers and Technology, 12.04.2021 20:00