Microbiology Exam 1 (Straighterline)
Questions And Answers With Verified
Solutions 100% Correct!!!
Which of the following is an acellular microorganism lacking a nucleus?
a. bacterium
b. helminth
c. protozoan
d. virus - ANSWER✔✔ d. virus
Name six types of microorganisms that we are studying in this book and use each
one in a sentence. - ANSWER✔✔ - Bacteria: Bacteria are all nonarchaea
prokaryotes.
- Archaea: Archaea live in extreme environments.
- Protozoa: Protozoa are a group of single-celled eukaryotic organisms.
- Fungi: Fungi are eukaryotic organisms that can be unicellular or multicellular.
- Helminths: Helminths are parasitic worms.
- Viruses: Viruses are microscopic acellular elements composed of nucleic acid
surrounded by a protein coat.
Defend the argument that a web of life is a more accurate representation of
evolutionary relatedness than a tree of life. - ANSWER✔✔ Web of life is more
accurate because different species cross breed instead of genes simply being
passed down such as a tree of life.
Which of the following is a microorganism that contains organelles?
a. prion
, b. bacterium
c. fungus
d. virus - ANSWER✔✔ c. fungus
Often when there is a local water main break, a town will post an advisory to boil
water before ingesting it. Identify the biological basis behind the effectiveness of
this procedure in minimizing illness. - ANSWER✔✔ Most pathogens thrive at body
temperature. Boiling the water raises the temperature well above body
temperature and kills the pathogens.
Imagine a way you might design a drug that will destroy microbes without
harming human cells. - ANSWER✔✔ Bacteria possess a peptidoglycan cell wall.
Creating a drug that breaks down peptidoglycan will compromise the cell wall.
(i.e. penicillin)
Identify the process or environment in this list that is not affected by
microorganisms.
a. oxygen cycles
b. recycling of dead organisms
c. human health
d. all of the above have microbial involvement - ANSWER✔✔ d. all of the above
have microbial involvement
Discuss the current view of the evolution of eukaryotic cells. - ANSWER✔✔ ??????
Describe how microorganisms can accomplish bioremediation. - ANSWER✔✔
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