Table of Contents
- 1 What product substance caused the color change in tube S 3?
- 2 Which of the following changes happened to the color of the bromothymol blue solution when the elodea was exposed to light conditions?
- 3 What cellular process took place to cause the color change in tube S 3 which contains water bromothymol blue and snail?
- 4 What does the color change from green to blue indicate about the concentration of CO2 in the solution what does it indicate about the pH of the solution?
- 5 What is the reason for the color change in the test tube with elodea submerged in BTB solution?
- 6 How does light intensity affect the rate of photosynthesis?
What product substance caused the color change in tube S 3?
What cellular process took place to cause the color change in Tube S3 containing water, Bromothymol blue, and snail? The process that caused the color change is called cellular respiration. The Bromothymol blue indicator changes from blue to yellow in the presence of an acid.
What would you conclude if the color of the solution in the control tube changed?
The levels of carbon dioxide changed, therefore the BTB solution changed color to indicate the presence of carbon dioxide. If the control solution changed color, I would conclude there were organisms in the water.
Which of the following changes happened to the color of the bromothymol blue solution when the elodea was exposed to light conditions?
a slight increase of the bromothymol blue solution, as when carbon dioxide is added, will make the solution acidic and the color will change from blue to green. The absorption of Co2 from water by the elodea in light is revealed through the change in color of the bromothymol blue from blue to green.
Why does the rate of photosynthesis lead to a Colour change in the indicator solution?
In bright light, the rate of photosynthesis is greater than rate of respiration. So, leaf takes in CO2 from the air in the test tube. This reduces the CO2 inside the test tube and the colour of hydrogen-carbonate indicator solution changes from orange to purple as CO2 is taken away form the solution.
What cellular process took place to cause the color change in tube S 3 which contains water bromothymol blue and snail?
cellular respiration
What cellular process took place to cause the color change in Tube S-3, which contains water, Bromothymol blue, and snail? The process that caused the color change is called cellular respiration. The Bromothymol blue indicator changes from blue to yellow in the presence of an acid.
What does a color change in BTB indicate about a solution?
BTB is an acid indicator; when it reacts with acid it turns from blue to yellow. When carbon dioxide reacts with water, a weak acid (carbonic acid) is formed (see chemical reaction below). The more carbon dioxide you breathe into the BTB solution, the faster it will change color to yellow.
What does the color change from green to blue indicate about the concentration of CO2 in the solution what does it indicate about the pH of the solution?
When carbon dioxide is added to the solution, it creates carbonic acid, lowering the pH of the solution. BMB is blue when the pH is greater than 7.6, green when the pH is between 6-7.6, and yellow when the pH is less than 6.
What does the color change from green to yellow indicate about the concentration of CO2 in the solution?
In the absence of light, cellular respiration will dominate, and the pH of the CO2 indicator will decrease turning it yellow. This means that more CO2 is being consumed than produced, which causes the solution to become more basic.
What is the reason for the color change in the test tube with elodea submerged in BTB solution?
Bromothymol blue solution, BTB, can indicate the presence of carbon dioxide in the water. When little or no carbon dioxide is present, BTB will show a blue color. Depending upon the amount of carbon dioxide, BTB will change to green or yellow. Yellow indicates more carbon dioxide.
What was the direct cause of Colour changes in the bicarbonate indicator solution?
Carbon dioxide, even in the concentrations found in exhaled air, will dissolve in the indicator to form carbonic acid, a weak acid, which will lower the pH and give the characteristic colour change.
How does light intensity affect the rate of photosynthesis?
As you rise from low light intensity to higher light intensity, the rate of photosynthesis will increase because there is more light available to drive the reactions of photosynthesis. At a very high intensity of light, the rate of photosynthesis would drop quickly as the light starts to damage the plant.
What product in the formula was responsible for the color change?
CO2
6. What product in the formula was responsible for the color change? The product responsible for the change is CO2.