Biology - Chapter #2 REVIEW

An atom that has lost or gained one or more electrons is

• a molecule.

• an ionic molecule.

• an ion.

• a compound.

Compounds differ from elements because compounds are composed of

• large quantities of atoms.

• particular types of atoms in a specific ratio.

• substances made of different elements bonded together in a specific ratio.

• answer not here

Most molecules that make up living things are based on ____ atoms.

• oxygen

• carbon

• hydrogen

• all answers are correct

Carbon based molecules have ____ basic structures.

• 2

• 5

• 4

• 3

The process of____ occurs when materials of the same type stick together.

• Adhesion

• A weak bond

• Cohesion

• An oxygen bond

The greatest amount in a solution is the

• solute.

• pH.

• solvent.

• answer not here

The _____ is the part of a solution that dissolves.

• solute

• solvent

• pH

• answer not given

What determines a protein's structure and function?

• its number of amino acids

• the kinds of sugar that are present

• the order of the amino acids must be combined correctly.

• answer not given

Water molecules stick to other substances.

The above statement is describing:

• adhesion

• high specific heat

• cohesion

• all answers are correct

The attraction between a slightly positive hydrogen atom of one water molecule and the slightly negative oxygen atom of another water molecule is a(n)

• ionic bond.

• a hydrogen bond.

• cohesive bond.

• answer not given