Exploring Cellular Respiration in AP Biology

Mr. Andersen walks through AP Biology Lab 5, focusing on cellular respiration. The lab uses a respirometer to measure the rate of oxygen consumption in worms and peas, both germinating and non-germinating. The experiment setup includes potassium hydroxide to absorb carbon dioxide, ensuring accurate volume measurements. The video explains the procedure, controls, and data analysis, highlighting that germinating peas have the highest respiration rate. The lab demonstrates the principles of cellular respiration and the importance of controls in scientific experiments.

What is the primary function of the mitochondria in cellular respiration?

• To break down carbon dioxide

• To generate ATP

• To produce glucose

• To store oxygen

Which of the following is NOT a step in cellular respiration?

• Photosynthesis

• Electron transport chain

• Krebs cycle

• Glycolysis

What is the main objective of the lab described in the video?

• To measure the rate of photosynthesis

• To measure the rate of cellular respiration

• To measure the amount of glucose produced

• To measure the amount of carbon dioxide produced

Which organisms are used in the lab to measure respiration rates?

• Worms and peas

• Worms and corn

• Worms and beans

• Peas and beans

What is the role of potassium hydroxide in the respirometer setup?

• To convert carbon dioxide into a solid

• To produce ATP

• To absorb oxygen

• To maintain temperature

Why are beads used in the respirometer setup?

• To generate ATP

• To account for temperature changes

• To produce oxygen

• To absorb carbon dioxide

What is the purpose of using glass beads in one of the jars?

• To serve as a control

• To measure oxygen consumption

• To produce carbon dioxide

• To generate ATP

Which type of peas showed the highest rate of respiration in the experiment?

• Non-germinating peas

• Dry peas

• Germinating peas

• Glass beads

What does the slope of the line in the respiration rate graph represent?

• The amount of carbon dioxide produced

• The amount of glucose consumed

• The rate of respiration

• The temperature change

Why do non-germinating peas have a lower respiration rate compared to germinating peas?

• They are not activated

• They produce more carbon dioxide

• They consume more oxygen

• They are soaked in water