In physiology, a stimulus (plural stimuli) is a detectable change in the internal or external environment. The ability of an organism or organ to respond to external stimuli is called sensitivity. When a stimulus is applied to a sensory receptor, it normally elicits or influences a reflex via stimulus transduction.
The control group in an experiment is a standard of comparison for the experimental group.
What is a control group?
- A control group is a group in an experiment or study that does not include the independent variable but serves as a comparison for the treatments given to the main experiments.
- The control group serve as a determinant in an experiment as to ensure that our experiment will work.
Some examples of control groups are:
- Positive control group
- Negative control group
- Placebo control group
- Randomized control group
- Untreated control group
- Double-blind control group
- Historical control group
Read more about Control group here: brainly.com/question/21485161
Place the metric ruler across the zone of inhibition, at the widest diameter, and measure from one edge of the zone to the other edge. HOLDING THE PLATE UP TO THE LIGHT MIGHT HELP.
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Gravitational force, keeps the molecules in the atmosphere from moving into space. Gravity's influence is stronger near the earth's surface and weaker
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