Question

1.If an atom of Magnesium (Mg) loses an electron to an atom of Oxygen (O), these

two atoms could:

A.

form a covalent bond

B.

not interact in any way

C.

form an ionic bond

D.

share a second pair of electrons to form a double bond

E.

form a hydrogen bond

2. Which of the substances listed below would not be considered a lipid?

A.

Wax

B.

Glycogen

C.

Steroids

D.

Fat

E.

Oil

3.

A community consists of:

A.

All of the organisms of one type living in the same environment

B.

All of the interacting organisms of all types living in a particular

environment

C.

All of the organisms and their interactions with the physical environment

D.

The physical environment in which organisms live

E.

The highest level of biological structure that can be studied

4.

The 4 most common elements found in living tissue or cells are:

A.

hydrogen, carbon, oxygen and phosphorus

B.

potassium, phosphorus, carbon and water

C.

water, carbon, nitrogen and oxygen

D.

carbon, oxygen, nitrogen and hydrogen

E.

calcium, carbon, hydrogen and oxygen

5.

The polar nature of water causes it to:

A.

be a good solvent for non-polar substances

B.

evenly share electrons in the bonds between the oxygen and hydrogen

atoms

C.

be cohesive

D.

easily form covalent bonds with up to four other water molecules

E.

All of the choices are correct

Answer 1