Exploring Bromothymol Blue and Cellular Respiration

What is the primary purpose of the bromothymol blue in this lab?

• To measure temperature changes

• To indicate glucose levels

• To indicate pH changes

• To measure oxygen levels

What is the first step in the resting stage of the experiment?

• Measure the amount of carbon dioxide produced

• Exercise for one minute

• Blow bubbles into the solution

• Measure the heart rate

How many times should you blow bubbles into the solution during each stage to get an average?

• Once

• Twice

• Three times

• Four times

What happens to the bromothymol blue solution when carbon dioxide is introduced?

• It turns purple

• It remains blue

• It turns yellow-green

• It turns red

What is created when carbon dioxide mixes with water in the solution?

• Sulfuric acid

• Hydrochloric acid

• Carbonic acid

• Nitric acid

Why does the color change reaction happen faster after exercising?

• Because the bromothymol blue concentration is higher

• Because the straw is longer

• Because more carbon dioxide is produced

• Because the solution is warmer

What is the expected color change time after two minutes of exercise compared to resting?

• It should be slower

• It should be faster

• It should not change

• It should be the same

What does an increase in carbon dioxide production indicate about ATP production?

• ATP production decreases

• ATP production increases

• ATP production remains the same

• ATP production stops

What should you compare to analyze the data from the experiment?

• The time it took for the solution to change color

• The size of the bubbles

• The color of the solution

• The temperature of the solution

What is the main product of cellular respiration that is measured in this lab?

• Oxygen

• Glucose

• Water

• Carbon dioxide