BIOD 171 Microbiology Module 1 – 6 Exam Questions and Answers

Portage Learning BIOD 171 Module 1- 6 Full Exams k j k j k j k j k j k j k j k j




Exam k j Module k j 1



1. True or False: A virus is considered a microorganism.
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False. Viruses are not living and as such are not considered microorganisms.
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Viruses can, however, be classified as microbes, a more general term
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that includes microorganisms and viruses.
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2. What is the smallest biological unit of kj kj kj kj kj kj




kj life? A cell. k j k j




3. At a generalized level, all cells are
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k j comprised of what? k j kj k j Macromolecules*

*A student may also answer: Proteins, Lipids, Nucleic acids and Polysaccharides
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but they must answer with all four to be fully correct.
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4. How many different types of amino acids are available from
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which to make proteins?
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20



5. Define an essential amino acid. kj kj kj kj




An essential amino acid cannot be produced by the human body
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k j and as such must be taken in from the environment through
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k j alternative sources (i.e) food. k j k j k j




6. What k j are k j the k j two k j major k j types k j of k j nucleic k j acids k j and k j their k j roles?

DNA (deoxyribonucleic acid): Contains the genetic material as well as
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k heredity characteristics found in living organisms. RNA (ribonucleic acid): its
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role is for decoding
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k j of heredity k information
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k jfound in DNA
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, 7. What k j are k j the k j two k j major k j types k j of k j nucleic k j acids k j and k j their k j roles?

There are two major types of nucleic acids: DNA
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k (deoxyribonucleic acid) and RNA (ribonucleic acid). Nucleic acids are
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chemical molecules that carry genetic information within the cell. DNA
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k contains a vast amount of hereditary information and is
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responsible for the inheritable characteristics of living organisms.
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k RNA is responsible for deciphering the hereditary information in
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DNA and using it to synthesize proteins.
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8. Complete the following RNA strand and indicate how many k j k j k j k j k j k j k j k j




bonds are formed for each complementary pair:
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3’ GGUCAUCG 5’

5’ k j CC AGC k j 3’



3’ GGUCAUCG 5’

5’ CCAGUAGC 3’

There are 2 bonds formed between A and U, and 3 bonds between G and C.
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9. The k j plasma k j membrane k j (select k j all that are k j k j k j true):

A. Only k j restricts k j movement k j of k j materials k j into k j the k j cell

B. Is often a bilayer comprised of lipids
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C. Cannot k j prevent k j essential k j nutrients k j from k j escaping

D. Contains hydrophobic tails pointing kj kj kj




kj inward B and D k j k j k j




10. Carbon, Hydrogen and Oxygen atoms come together to form k j k j k j k j k j k j k j k j




what primary macromolecule? Give an example.
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Polysaccharides. Glucose, sucrose and cellulose are all acceptable answers. kj kj kj kj kj kj kj kj




11. True k j or k j False: k j Eukaryotic k j cells k j do k j not k j have k j a k j nucleus

False. Eukaryotic cells do have a nucleus (prokaryotic cells do not).
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, 12. True or False: Prokaryotic cells can be subdivided into
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k j Bacteria and Archaea. k j kj True



13. Describe the 4 basic bacterial morphologies. k j k j k j k j k j




Coccus (round/spherical), bacillus (rod), vibrio (curved rod) or spirillum
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(spiral/corkscrew).
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14. True or False: Archaea, a eukaryotic class of microorganisms, are capable
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of surviving harsh environments.
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False. Archaea are prokaryotic bacteria capable of surviving harsh environments.
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15. Which of the following microorganisms are considered to be
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Eukarya? Select all that apply.
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A. Animalia

B. Plantae

C. Fungi

D. Protista



A,B,C,D



16. True of False: All multicellular k j k j k j k j k j microorganisms classified k j k j as
Animalia are heterotropic.
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True



17. Microorganisms classified as Plantae obtain k j k j k j k j k j most k j of k j their k j energy k j by
kconverting
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………….. energy into ................................. energy.
Light k j (sunlight); k j chemical k j (sugars)

, 18. A kj defining characteristic of fungi is the presence of chitin
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k jin the cell walls. Which of following also contain chitin?
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k j Select all that apply. k j k j k j k j k j k j




A. Mushrooms

B. Bacteria

C. Yeast

D. Molds



A, C and D all contain chitin.
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19. True or False: A defining characteristic of Protista is the inability of
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colonies to form tissue layers.
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True.



20. Cell walls are found in which of the following (select all that apply):
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A. Plants

B. Fungi

C. Bacteria

D. Mammalian cells k j




E. Algae



A, B, C, E
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21. The k j function of k j k j the k j ribosome k j is k j (select k j all k j that k j apply):

A. Lipid k j synthesis

B. Protein k j synthesis
C. To produce energy (ATP) kj kj kj