Microbiology Exam 1 (Straighterline)/21 Exam
Questions with Answers
Which of the following is an acellular microorganism lacking a nucleus?
a. bacterium
b. helminth
c. protozoan
d. virus - -d. virus
-Name six types of microorganisms that we are studying in this book and
use each one in a sentence. - -- 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. - -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 - -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. - -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. - -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
Questions with Answers
Which of the following is an acellular microorganism lacking a nucleus?
a. bacterium
b. helminth
c. protozoan
d. virus - -d. virus
-Name six types of microorganisms that we are studying in this book and
use each one in a sentence. - -- 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. - -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 - -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. - -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. - -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
