Unit 2 Biology

Molecules that stick to the same type of molecules.

• cohesion

• adhesion

• hydrophilic

• hydrophobic

Which of the following makes up a molecule of water?

• one atom of oxygen, two atoms of hydrogen

• one atom of hydrogen, two atoms of oxygen

• one atom of chlorine, one atom of sodium

• one atom of hydrogen, one atom of oxygen

When salt is dissolved in water, water is the

• solvent

• solute

• solution

• reactant

A substance with a pH of 6 is called a....

• Base

• Acid

What word describes when water is attracted to other substances?

• cohesion
• adhesion
• capillary action
• surface tension

Why does water move from the roots to the leaves of plants?

• Water is pushed by solutes
• Capillary action pulls the water molecules like a chain
• Water is pulled by gravity
• Water’s cohesion causes it to “pull” towards the leaves

The fact that water can stick to other substances is called:

• Ph

• Adhesion

• Cohesion

• Insulation

When reading the nutrition facts on food packaging total fats is a measure of...

• Carbohydrate

• Lipids

• Water

• Protein

Proteins are made of monomers called ___________

• Nucleotides
• Monosaccharides
• Amino Acids
• Glycerol and fatty acids

Waxes, oils and fats are examples of

• Carbohydrates
• Lipids
• Proteins
• Nucleic Acids