Rates of Respiration Experiments with Maggots: Investigating the Relationship between Temperature and Respiration

The video tutorial explores an experiment conducted by Katherine to investigate the relationship between temperature and the rate of respiration in maggots. Using a respirometer, Katherine measures the distance traveled by colored water in a glass tube as maggots respire at different temperatures. The experiment involves setting up the apparatus, acclimatizing maggots, and recording results at various temperatures. The tutorial explains the theory behind the experiment, including the chemical reactions involved, and concludes with a summary of the results and future analysis plans.

What is Katherine's hypothesis in the experiment?

• The rate of respiration is constant across all temperatures.

• The rate of respiration depends on temperature.

• The rate of respiration decreases with temperature.

• The rate of respiration is independent of temperature.

What is the purpose of the quicklime in the respirometer?

• To provide oxygen to the maggots.

• To increase the temperature of the water bath.

• To measure the rate of respiration directly.

• To absorb carbon dioxide produced by the maggots.

Why is it important to use the same maggots throughout the experiment?

• To ensure they are all healthy.

• To prevent them from escaping.

• To maintain consistency in respiration rates.

• To ensure they are all the same size.

What is the role of cotton wool in the experiment setup?

• To absorb excess water.

• To separate maggots from quicklime and allow gas exchange.

• To provide a cushion for the maggots.

• To measure the temperature of the water bath.

How does the temperature of the water bath affect the experiment?

• It has no effect on the experiment.

• It affects the rate of respiration in maggots.

• It changes the color of the water.

• It alters the chemical composition of quicklime.

What was the distance moved by the colored water at 35 degrees?

• 6.8 centimeters

• 9.4 centimeters

• 8.1 centimeters

• 7.7 centimeters

At what temperature did the water move a distance of 6.8 centimeters?

• 26 degrees

• 45 degrees

• 35 degrees

• 40 degrees