BIOD 171 EXAM ALL MODULES
TESTBANK
MODULE 1 TO MODULE 6
LATEST UPDATE 2024/2025
, BIOD 171 Exam 1
True or False: A virus is considered a microorganism.
False. Viruses are not living and as such are not considered microorganisms. Viruses can,
however, be classified as microbes, a more general term that includes microorganisms
and viruses.
2. What is the smallest biological unit of
life?
A cell.
3. At a generalized level, all cells are comprised of what?
Macromolecules*
*A student may also answer: Proteins, Lipids, Nucleic acids and Polysaccharides but they
must answer with all four to be fully correct.
How many different types of amino acids are available from which to make proteins?
20
2. Define an essential amino acid.
Exam Page 3
1. What are the two major types of nucleic acids and their roles?
DNA (deoxyribonucleic acid): Contains the genetic material as well as heredity characteristics
found in living organisms. RNA (ribonucleic acid): its role is for decoding the sequence of
heredity information found in DNA
,Answer Key
1. What are the two major types of nucleic acids and their roles?
There are two major types of nucleic acids: DNA (deoxyribonucleic acid) and RNA (ribonucleic acid).
the cell. DNA contains a vast amount of hereditary information and is responsible for the inheritable
characteristics of living organisms. RNA is responsible for deciphering the hereditary information in DNA
and using it to synthesize proteins.
Exam Page 4
Answer Key
1. Complete the following RNA strand and indicate how many bonds are formed for each
complementary pair:
3’ GGUCAUCG 5’
5’ CC AGC 3’
3’ GGUCAUCG 5’
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
B and D
, 2. Carbon, Hydrogen and Oxygen atoms come together to form what primary macromolecule? Givean
example.
Exam Page 6
Answer Key
1. True of False: Eukaryotic cells do not have a nucleus False. Eukaryotic cells do have a
nucleus (prokaryotic cells do not).
2. True or False: Prokaryotic cells can be subdivided into Bacteria and Archaea.
True
3. Describe the 4 basic bacterial morphologies.
Coccus (round/spherical), bacillus (rod), vibrio (curved rod) or spirillum (spiral/corkscrew).
4. True or False: Archaea, a eukaryotic class of microorganisms, are capable of surviving harsh
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
A,B,C,D
2. True of False: All multicellular microorganisms classified as Animalia are heterotropic.
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