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Exam (elaborations)

BIOD 171 Microbiology Module 1 – 6 Exam Questions and Answers

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BIOD 171 Microbiology Module 1 – 6 Exam Questions and Answers

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




Exam m j Module m j 1



1. True or False: A virus is considered a microorganism.
mj mj m j m j mj mj m j m j




False. Viruses are not living and as such are not considered microorganisms.
mj mj mj mj mj mj mj mj mj mj mj




Viruses can, however, be classified as microbes, a more general term
mj m j m j m j m j m j m j m j m j m j m j




that includes microorganisms and viruses.
m j m j mj m j m j




2. What is the smallest biological unit mj mj mj mj mj




mj of life? A cell.
mj m j m j




3. At a generalized level, all cells are
m j m j m j m j m j m j




m j comprised of what? m j mj m j Macromolecules*

*A student may also answer: Proteins, Lipids, Nucleic acids and
mj mj m j m j mj mj mj mj mj




Polysaccharides but they must answer with all four to be fully
mj mj m j m j m j m j m j m j m j m j m j




correct.
m j




4. How many different types of amino acids are available from
m j m j m j m j m j m j mj m j m j




which to make proteins?
m j m j mj m j




20



5. Define an essential amino acid. mj mj mj mj




An essential amino acid cannot be produced by the human
m j m j m j m j m j m j m j m j m j




m j body and as such must be taken in from the
m j environment m j m j mj m j m j m j m j m j m j




m j through alternative sources (i.e) food. m j m j m j m j




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

DNA (deoxyribonucleic acid): Contains the genetic material as well
m j m j m j m j m j m j m j m j




as
m j heredity characteristics found in living organisms. RNA (ribonucleic
m j mj mj mj mj mj mj mj




acid): its role is for decoding
mj the
mj sequencem j of heredity m j m j m j m j m j m j m j m j m j m j m j m j




information
m j found in DNA m j m j m j m j mj

, 7. What m j are m j the m j two m j major m j types m j of m j nucleic m j acids m j and m j their m j roles?

There are two major types of nucleic acids: DNA
m j m j m j m j m j m j m j m j




m (deoxyribonucleic
j acid) and RNA (ribonucleic acid). Nucleic acids are m j m j mj m j m j m j m j m j




chemical molecules that carry genetic information within the
m j m j cell. DNA m j m j m j mj m j m j m j




m contains a
j vast amount of hereditary information and is
m j m j m j m j m j mj m j m j




responsible for the inheritable characteristics of living organisms.
m j m j m j m j m j m j m j m j




m RNA is responsible for deciphering the hereditary information
j m j m j m j m j m j m j m j




m in DNA and using it to synthesize proteins.
j mj m j m j m j m j m j m j




8. Complete the following RNA strand and indicate how many m j m j m j m j m j m j m j m j




bonds are formed for each complementary pair:
m j m j mj m j m j m j m j




3’ GGUCAUCG 5’

5’ m j CC AGC m j 3’



3’ GGUCAUCG 5’

5’ CCAGUAGC 3’

There are 2 bonds formed between A and U, and 3 bonds between G and C.
m j m j m j m j m j m j m j m j m j m j m j m j m j m j m j




9. The m j plasma m j membrane m j (select m j all m j that m j are m j true):

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

B. Is often a bilayer comprised of lipids
mj mj mj mj mj mj




C. Cannot m j prevent m j essential m j nutrients m j from m j escaping

D. Contains hydrophobic tails mj mj




mj pointing inward B and D mj m j m j m j




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




form what primary macromolecule? Give an example.
m j m j mj m j m j m j m j




Polysaccharides. Glucose, sucrose and cellulose are all acceptable answers. mj mj mj mj mj mj mj mj




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

False. Eukaryotic cells do have a nucleus (prokaryotic cells do not).
mj mj mj mj mj mj mj mj mj mj

, 12. True or False: Prokaryotic cells can be subdivided into
m j m j m j m j m j m j m j m j




m j Bacteria and Archaea. m j mj True



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




Coccus (round/spherical), bacillus (rod), vibrio (curved rod) or spirillum
m j m j m j m j m j m j m j m j




(spiral/corkscrew).
mj




14. True or False: Archaea, a eukaryotic class of microorganisms, are
mj mj mj mj mj mj mj mj mj




capable of surviving harsh environments.
mj mj m j m j m j




False. Archaea are prokaryotic bacteria capable of surviving harsh environments.
mj mj mj mj mj mj mj mj mj




15. Which of the following microorganisms are considered to be
m j m j m j m j m j m j m j m j




Eukarya? Select all that apply.
m j m j mj m j




A. Animalia

B. Plantae

C. Fungi

D. Protista



A,B,C,D



16. True of False: All multicellularm j m j m j m j m j microorganisms classified m j




as Animalia are heterotropic.
m j m j mj m j




True



17. Microorganisms classified as Plantae obtain m j m j m j m j m j most m j of m j their m j energy m j by
m converting
j




………….. energy into ................................. energy.
Light m j (sunlight); m j chemical m j (sugars)

, 18. A mj defining characteristic of fungi is the presence of chitin
m j m j m j m j m j m j m j m j m j




m jin the cell walls. Which of following also contain chitin?
m j m j mj m j m j m j m j m j m j m j m j m j m j m j




m j Select all that apply. m j m j m j m j m j m j




A. Mushrooms

B. Bacteria

C. Yeast

D. Molds



A, C and D all contain chitin.
m j m j m j m j m j m j




19. True or False: A defining characteristic of Protista is the inability of
m j m j m j m j m j m j m j m j m j m j m j




m jcolonies to form tissue layers. m j mj m j




True.



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




A. Plants

B. Fungi

C. Bacteria

D. Mammalian cells m j




E. Algae



A, B, m j m j C, E m j




21. The m j function m j of m j the m j ribosome m j is m j (select m j all m j that m j apply):

A. Lipid m j synthesis

B. Protein m j synthesis
C. To produce energy (ATP)
mj mj mj

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