# Micro Exam 1

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single-celled
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Terms in this set (36)
What is the difference between the lytic and lysogenic cycles of bacteriophages? (Level 2 -
Understanding)
A. The lytic cycle is a viral reproduction mechanism, while the lysogenic cycle is how
archaea
reproduce.
B. The lytic cycle results in the lysis of the infected cell, while the lysogenic cycle is
when the viral DNA is integrated into the host genome.
C. During the lytic cycle the phage DNA injects its DNA, while in the lysogenic cycle the
DNA is not
injected at all.
D. The lytic cycle results in the lysis of the infected cell, while the lysogenic cycle
releases its DNA through exocytosis.
E. The lytic cycle happens over time, while the lysogenic cycle happens very quickly.
B - TRUE because the lytic cycle is when viral DNA is injected, and then new DNA is synthesized
into phages. The cell then lyses which releases the new phages. The lysogenic cycle is when the
injected DNA integrates into the DNA of its host so that when the daughter cells are made, each
copy contains the DNA with the section of the viral DNA.
Yeasts reproduce asexually via: (Level 1 - Remembering)
A. Sporulation where mycelia grow into a fruiting body which makes spores
B. Budding where a small bud forms on cell membrane of parent cell and splits off
C. Sporulation where two different mating types come together and form spores
D. Binary fission where the parent cell splits in two after copying the DNA
E. Meiosis where one parent cell creates four daughter cells each with half the
initial DNA
Why is the electron transport chain the last step in aerobic respiration? (Level 2 -
Understanding)
a. Oxygen was not available until the last step
b. It relies on the products from the other steps of respiration
c. The protein complexes were not fully formed until the last step
d. ATP was not available until the last step
e. It forms CO2 which is the final waste product
A disease has broken out among lab mice. The lead scientist is a microbiologist and wants to
determine what is causing the illness. They initially isolated the sick mice from the healthy
ones to contain the pathogen. They did not change anything else in the mice's environment.
From one of the sick mice, a sample was taken and grown in a pure culture. The microbe
was then injected into one of the mice in the healthy population. How will the
microbiologist know whether or not that microbe was the pathogen or not? (Level 2 -
Understanding)
A. If the pathogen is present in the injected mouse
B. If the pathogen is present in the mice's food/environment
C. If the injected mouse is showing the same symptoms as the ill mice.
D. If there is a bump at the injection site
E. If the first culture matches the one taken from the injected mouse.