Examlex
What functional group is always found in all alkaloids (such as caffeine, nicotine, and digitalis) ?
Dependent Variable
A variable in an experiment that is expected to change as a result of changes made to the independent variable.
Placebo
A substance with no therapeutic effect, often used as a control in testing new drugs.
Participants' Expectations
The beliefs or assumptions held by individuals participating in a study or activity about what will happen, which can influence their behavior and the outcomes.
Experiments
A method of scientific investigation involving the manipulation of variables to test a hypothesis and observe the effects, often used to establish cause-and-effect relationships.
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