Production of Heat and Carbon Dioxide in Respiration - Investigating Germinating Seeds

The video explores the process of aerobic respiration in germinating seeds, focusing on the production of heat and carbon dioxide. Two experiments are conducted: one to measure temperature changes in germinating and boiled beans, and another to detect carbon dioxide using a hydrogen carbonate indicator. The results show that germinating seeds produce heat and carbon dioxide, confirming their respiration activity.

What is the primary purpose of aerobic respiration in beans?

• To produce glucose

• To generate oxygen

• To produce carbon dioxide, water, and energy

• To create new cells

In the heat production experiment, why are boiled beans used?

• To increase the temperature

• To absorb more water

• To serve as a control by preventing respiration

• To enhance germination

What is the expected temperature change in germinating beans after 24 hours?

• Decrease to 10 degrees centigrade

• Fluctuate randomly

• Remain at 19 degrees centigrade

• Increase to 36 degrees centigrade

What is the role of hydrogen carbonate indicator in the carbon dioxide production experiment?

• To absorb oxygen

• To provide nutrients

• To detect the presence of carbon dioxide

• To measure temperature

What color change indicates a high level of carbon dioxide in the experiment?

• Blue

• Yellow

• Orange

• Purple

Why is a control tube used in the carbon dioxide experiment?

• To provide extra beans

• To ensure no external air affects the results

• To compare changes against a baseline with no beans

• To increase the speed of the experiment

What conclusion can be drawn about germinating seeds from the experiments?

• They do not respire

• They do not produce carbon dioxide

• They only produce water

• They produce carbon dioxide and must be respiring