Question

a student used a respirometer to determine metabolic rates of some invertebrates (lice). use the following information to answer the next question. 28. which of the following rows identifies the manipulated variable and one responding variable in the experiment described above? row manipulated variable responding variable a. temperature number of lice b. oxygen uptake temperature c. number of lice oxygen uptake d. co₂ production number of lice

Explanation:

Step1: Define variables

The manipulated variable is what the experimenter changes. The responding variable is what changes in response to the manipulated variable.

Step2: Analyze the experiment

The student is changing the number of lice to see how it affects oxygen uptake. The number of lice can be controlled by the experimenter (manipulated variable), and oxygen - uptake will vary depending on the number of lice (responding variable).

Answer:

C. number of lice, oxygen uptake