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Question:

Why are control groups used in experiments?

A To minimize the effect of variables.
explanation

A control group is used to ensure that the number of variables that influences a data set is minimized. This is done by comparing measured data to the control group, which has many fixed variables.

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Related Questions

The addition of a catalyst to a chemical reaction will have what effect?

Increase the rate at which the reaction takes place.

A catalyst, by definition, is an enzyme that helps decrease the energy necessary to begin a reaction. Consequently, the addition of a catalyst to a chemical reaction will increase the rate at which the reaction takes place. A reduction in the energy required to begin the reaction means that the reaction will take place more quickly.

Which of the following descriptions is CORRECT?

Gas: no definite volume and no definite shape.

A gas is a substance with no definite volume and no definite shape. Solids and liquids have volumes that do not change easily.
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Liquids can occupy whatever shape their container has, so they do not have a fixed shape. Because the particles in liquids are very close together (barely further apart than in solids) liquids do not easily compress, so their volume is fixed.

If you have 200 mL of a 60% sodium chloride solution, how much NaCl is dissolved in the solution?

120 g

A 60% NaCl solution would be made by dissolving 60 g of NaCl in slightly less than 100 mL of water, and then increasing the volume of the solution to the final 100mL of water. If we had 200 mL of a 60% NaCl solution, then there would be 120 g of NaCl dissolved in the solution.

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Family.

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Which of these is NOT a function of mitosis?

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Temperature.

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A with T, C with G

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