Chapter 1: Practice Questions

Question 1

In looking at the periodic table, the following information would be found about Nitrogen:
14
7 N

Answer 1

It has an atomic mass of 14 atomic mass units and 7 electrons.

Question 2

Isomers are molecules that

Answer 2

Have the same molecular formula

Question 3

In living organisms, buffers do which of the following?

Answer 3

Maintain pH in the cells within a narrow range, allowing enzymes to function.

Question 4

By what factor would the concentration of hydrogen (hydronium) ions be decreased if the pH of a solution changed from 4.5 to 6.5?

Answer 4

100

Question 5

The following structural formula is representative of which functional group? 
-C=O
  \
   O
   /
 H

Answer 5

Carboxyl

Question 6

Where would you expect to find these functional groups?
H |
| C = O
- N |
| O
H |
H

Answer 6

Amino Acid

Question 7

Of the following, which is not considered to be a polymer?

a) cellulose
b) RNA
c) Starch
d) Protein
e) Fat

Answer 7

Fat