Front

How many hydrogen bonds can a water molecule form?

Back

Four

Front

How many hydrogen bonds are there between cytosine and guanine in DNA?

Back

Three

Front

What property of water allows it to move from roots to leaves in plants?

Back

Capillary action

Front

What is a hydrogen bond?

Back

A bond between a hydrogen atom and an electronegative atom.

Front

What is the purpose of hydrogen bonds in DNA?

Back

To stabilize the double helix structure.

Front

What is the molecular structure of water?

Back

Water (H2O) consists of one oxygen atom covalently bonded to two hydrogen atoms.

Front

What is cohesion in the context of water?

Back

Cohesion is the attraction between water molecules due to hydrogen bonding.

Front

What is adhesion in the context of water?

Back

Adhesion is the attraction between water molecules and other substances.

Front

What is specific heat, and why is it important for water?

Back

Specific heat is the amount of heat required to change the temperature of a substance. Water's high specific heat helps regulate temperature in the environment.

Front

How does temperature affect hydrogen bonding in water?

Back

As temperature increases, hydrogen bonds break more frequently, leading to a change in water's state (e.g., from liquid to gas).