Exploring Cellular Respiration in Yeast

What are the main products of cellular respiration?

• Oxygen and glucose

• Heat, carbon dioxide, and water

• Carbon dioxide and oxygen

• Glucose and water

What is the purpose of adding warm water and yeast to the bottles?

• To measure the yeast

• To dissolve the sugar

• To activate the yeast

• To cool down the yeast

Why is sugar added to bottle B in the experiment?

• To provide glucose for the yeast

• To make the water sweet

• To change the color of the solution

• To increase the temperature

What is the purpose of sealing the bottles with balloons?

• To keep the water warm

• To add more oxygen

• To measure the amount of carbon dioxide produced

• To prevent the yeast from escaping

What happens to the yeast cells when they grow and divide?

• They break down glucose and produce carbon dioxide and water

• They consume carbon dioxide and produce oxygen

• They produce oxygen and glucose

• They remain unchanged

Why did the balloon on bottle B inflate?

• Because the yeast in bottle B produced carbon dioxide

• Because the yeast in bottle B produced oxygen

• Because the yeast in bottle B consumed all the glucose

• Because the yeast in bottle B remained inactive

What can be concluded about the effect of glucose on yeast growth?

• Glucose has no effect on yeast growth

• Glucose inhibits yeast growth

• Glucose promotes yeast growth

• Glucose kills the yeast

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