Read about each experiment and practice identifying the key components. 1. A researcher wants to test the effects of a new blood
pressure drug on the blood pressure of elderly patients.
In her experiment, define the:
Independent variable? (1pt)
4
Dependent variable? (1pt)
Control group? (1pt)
Experimental group? (1pt)
Three possible constants? (5 pt each)

Organize the word parts according to where they appear in a medical term.

Juan and carol were studying invertebrates in biology. they knew that segmented or earth worms preferred a dark, moist habitat. during this lab, they would be investigating the responses of organisms called planaria or dugesia tigrina. these were simple flatworms that still had a one-way digestive system and a very simple nervous system. juan and carol placed the planaria in a petri dish containing cool, distilled water that was partially covered with black paper. they shined a light on the dish. next, they removed the paper and placed a small amount of chicken liver at one end of the dish. they added a few large salt crystals to the water. finally, they added drops of hot water to the cool water in the petri dish. their results can be seen in the data table. according to their experiment, all but one conclusion is valid.

Compare and contrast your sells take in oxygen, water, and food. what is one waste product that leaves your cells?