StraighterLine BIO250 - Microbiology Final Exam 2024Study Guide 60 Questions With 100% Correct Answers | Latest Update | Graded A+
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StraighterLine BIO250 - Microbiology
which of these is a genetic mutation that alters a base but does not change the amino acid? - CORRECT ANSWERS-silent
what type of information is often transferred directly through conjugation between bacterial cells? - CORRECT ANSWERS-drug resistance
what is the process that occurs when a rec...
StraighterLine BIO250 - Microbiology
Final Exam 2024Study Guide 60 Questions
With 100% Correct Answers | Latest Update
| Graded A+
,which of the following is the role of ribosomes? - CORRECT ANSWERS-provide a site
for protein synthesis
which of the following are theorized to be the ancestors of chloroplasts? - CORRECT
ANSWERS-cyanobacteria
which eukaryotic microorganisms are photoautotrophs? - CORRECT ANSWERS-algae
describe the genetic material that is contained within a virus. - CORRECT ANSWERS-
RNA or DNA, not both
in the life cycle of an animal virus, what occurs during adsorption? - CORRECT
ANSWERS-the virus attaches to the receptor sites outside the host cell
which of the following viral enzymes converts viral RNA into DNA? - CORRECT
ANSWERS-reverse transcriptase
a bacteriophage is what type of microorganism? - CORRECT ANSWERS-virus
what is the key function of a microbe's cell membrane, also known as the cytoplasmic
membrane? - CORRECT ANSWERS-it transports nutrients in and wastes out
,the outer covering of a virus is called the - CORRECT ANSWERS-capsid
which bacterial cell structure helps locomotion - CORRECT ANSWERS-flagellum
what organism relies only on inorganic minerals without sun for its nutrition? -
CORRECT ANSWERS-lithoautotroph
what must a microbe do in active transport to absorb nutrients? - CORRECT
ANSWERS-expend energy
why is phosphorus an important nutrient for bacteria? - CORRECT ANSWERS-it is a
component of nucleic acids
during which cycle of batch culturing are growing cells most vulnerable to a change in
heat? - CORRECT ANSWERS-rapid growth
what is the main process by which bacterial cells reproduce? - CORRECT ANSWERS-
binary fission
Appendages possessed by some bacteria that aid in conjugation are called which of
the following? - CORRECT ANSWERS-pili
What microbial process was responsible for changing earths atmosphere from one
without oxygen to one with oxygen? - CORRECT ANSWERS-Oxygenic
photosynthesis
, In the nitrogen cycle, which of the following phases involves the release of nitrogen
as N2? - CORRECT ANSWERS-Denitrification
In the secondary phase of wastewater treatment, why is air injected into the sludge
as it is stirred and recirculated? - CORRECT ANSWERS-The bioremediators need
oxygen
Which of the following microorganisms is used to make yogurt? - CORRECT
ANSWERS-Lactobacillus bulgaricus
ATP is a - CORRECT ANSWERS-Nucleotide that releases and stores energy in the cell
A viral capsid is composed of - CORRECT ANSWERS-proteins
which of these are NOT considered a living organism? - CORRECT ANSWERS-Viruses
which of the following describes the order in which different types of RNA are
involved in translation? - CORRECT ANSWERS-Messenger RNA (mRNA), transfer
RNA (tRNA), Ribosomal RNA (rRNA)
what is the bacterial identification technique that, when positive, results in the
bacterium staining two contrasting colors? - CORRECT ANSWERS-Gram staining
Which of the following is found In some, but not all groups of eukaryotic
microorganisms? - CORRECT ANSWERS-cell wall
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