Why is Water so important to Biology?

Why is Water so important to Biology?

Multiple Choice

How many atoms are there in a water molecule?

• 1

• 2

• 3

• 4

Multiple Choice

Which end of the water molecule "acts" as the negative end?

• hydrogen

• oxygen

Multiple Choice

Which is stronger, one hydrogen bond or many hydrogen bonds?

• one

• many

Multiple Choice

The boiling point of water at high altitudes is _______ 100 degrees Celsius.

• more than

• equal to

• less than

Multiple Choice

Water boils easier at high altitudes.

• true

• false

Multiple Choice

Which property describes water's ability to rise up a thin tube against the force of gravity?

• adhesion

• cohesion

Multiple Choice

Water molecules stick to other molecules. This is called adhesion.

• true

• false

Multiple Choice

What term is used to describe water's ability to climb up a tube against the force of gravity?

• capillary action

• refraction

• reflection

Multiple Choice

Plants have the ability to remove water from the soil as it is drawn up through its roots to its leaves where it is transferred to the atmosphere. This process is called _____.

• transportation

• precipitation

• transpiration

• condensation

Multiple Choice

Because water molecules must break the Hydrogen bonds that hold the water molecules together, water releases a lot of heat when it evaporates.

• true

• false

Multiple Choice

The reason it takes a lot of energy to heat water (and it takes a long time for warm water to cool) is because water has a high heat of vaporization.

• true

• false

Multiple Choice

Water is less dense as a solid than as a liquid.

• true

• false

Multiple Select

Check all 3 correct statements.

• Water is a good insulator.

• Water molecules often make good solvents.

• Water changes temperature easily.

• Water protects against temperature extremes.

• Water is a poor coolant.