Unit 1 Bio

Front

What property of water allows life to exist under frozen surfaces in polar seas?

Back

Water is less dense as a solid than as a liquid, allowing ice to float and insulate the water below.

Front

Which measuring tool provides the most accurate measurement of liquid volume?

Back

A graduated cylinder is typically more accurate than a beaker or flask.

Front

What term describes substances that do not mix with water?

Back

Hydrophobic; these substances are non-polar and do not interact with water.

Front

In an experiment, what is the variable that is measured and recorded called?

Back

Dependent variable; it is affected by changes in the independent variable.

Front

Which piece of equipment is NOT useful for transferring liquids?

Back

Petri dish; it is used for culturing cells and not for transferring liquids.

Front

What is the definition of a hydrophilic substance?

Back

A hydrophilic substance is one that is attracted to water and can dissolve in it.

Front

What is the role of the independent variable in an experiment?

Back

The independent variable is the factor that is changed or manipulated to observe its effect on the dependent variable.

Front

What does it mean for a substance to have high specific heat?

Back

It means the substance can absorb a lot of heat without a significant change in temperature.

Front

What is the difference between a beaker and a graduated cylinder?

Back

A beaker is used for mixing and holding liquids, while a graduated cylinder is used for precise measurements.

Front

What is the definition of a control group in an experiment?

Back

The control group is the group that does not receive the experimental treatment and is used for comparison.