Ap Bio Cell Respiration Lab

1176 Words5 Pages
Question doesn't relate to hypothesis - fix! AP Lab – Cellular Respiration Question: How does temperature affect the rate of cellular respiration in germinating and dry peas? Hypothesis: If both germinating and dry peas are placed in a respirometer and submerged in room temperature water and water with a temperature of 10 °C, then the respirometer with the germinating peas will prove a greater rate of cellular respiration than that of the dry peas in both temperatures of water. Procedure: See lab handout Data: See attached Analysis Questions #1-10 1. Conditions that must remain constant in this experiment include the temperature of the water baths and the volume of peas and beads in the respirometers. The general gas law states that if temperature and volume remain constant, then the pressure of the gas will change in proportion to the number of molecules of gas present. 2. Water moves into the respirometer pipettes because as oxygen is consumed by the peas, the pressure within the pipettes will decrease and thus the negative pressure will draw the water into the pipette. It is important to correct the readings from the peas because the glass beads are used as a control in which no changes should occur in CO2 and oxygen levels due to their abiotic nature. 3. For both plants and animals, cellular respiration occurs not only during the daytime but also at night. However, cellular respiration cannot occur if there are not enough reactants to carry out the process. For example, because plants supply an abundant amount of oxygen to the atmosphere, it would be difficult for living cells in humans to respire if plants were ever to be demolished from Earth. Some living cells may respire more than others when the body may require more energy in order to fuel mechanical or metabolic activity such as motion. Maintaining body temperature may also call for a higher

More about Ap Bio Cell Respiration Lab

Open Document