Negative ControlWhich substance is a negative control in all parts of this lab?

A negative control is a substance that is not expected to produce any effect or reaction in an experiment, serving as a baseline to compare the effects of the experimental substance. In biological experiments, this often involves using a known inert or inactive substance.

1. Common Choices for Negative Control:

   • Distilled water
   • Saline solution
   • A buffer solution that does not produce a reaction

2. Specific Context: To provide an accurate answer, I would need more details about the specific lab or experiment you are referring to.

In summary, the negative control in all parts of a lab is often a solution like distilled water or another inert substance that does not react in the experimental conditions.