Portage Learning BIOD BIOD 171 All Exams

True or False: A virus is considered a microorganism.

2. What is the smallest biological unit of life?

3. At a generalized level, all cells are comprised of what?

How many different types of amino acids are available from which to make proteins?

2. Define an essential amino acid.

Exam Page 3
1. What are the two major types of nucleic acids and their roles?

Answer Key
1. What are the two major types of nucleic acids and their roles?

Exam Page 4
Answer Key
1. Complete the following RNA strand and indicate how many bonds are formed for each
complementary pair:

There are 2 bonds formed between A and U, and 3 bonds between G and C.
Exam Page 5
Answer Key
1. The plasma membrane (select all that are true):
A. Only restricts movement of materials into the cell
B. Is often a bilayer comprised of lipids
C. Cannot prevent essential nutrients from escaping
D. Contains hydrophobic tails pointing inward

2. Carbon, Hydrogen and Oxygen atoms come together to form what primary macromolecule? Give
an example.

Exam Page 6
Answer Key
1. True of False: Eukaryotic cells do not have a nucleus

2. True or False: Prokaryotic cells can be subdivided into Bacteria and Archaea.

3. Describe the 4 basic bacterial morphologies.

4. True or False: Archaea, a eukaryotic class of microorganisms, are capable of surviving harsh
environments.

Exam Page 7
Answer Key
1. Which of the following microorganisms are considered to be Eukarya? Select all that apply.
A. Animalia
B. Plantae
C. Fungi
D. Protista

2. True of False: All multicellular microorganisms classified as Animalia are heterotropic.