11. A student wonders, "Does the moisture content in soil affect how far a worm can dig?" Identify the variables that are being considered in this experiment and the variables that need to be controlled. Independent Variable Dependent Variable Controlled Variables 1. 2. 3.
Microbial Physiology
Microbial physiology is the branch of microbiology that is associated with studying the physiology of fungi, bacteria, and viruses. It is an important field of science concerning functional genomics and metabolic engineering.
Chemotaxis
The organism’s movement in a particular direction as a response to certain chemicals that are available in the environment is defined as chemotaxis. In brief, it can be defined as the occurrence of an organism’s movement in response to a certain chemical stimulus.
A well-written research question states the independent and dependent variables in the experiment.
For example, a student investigated the effect of soil pH on the number of strawberries produced by a strawberry plant. Her research question was “How does the pH of soil affect the number of strawberries produced by a strawberry plant?
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