Bio 250
straighterline test 1
prep 2024
COMPREHENSIVE
SCIENCE REVIEW
ACTUAL EXAMS TEST
BANK 300
QUESTIONS AND
CORRECT DETAILED
ANSWERS|ALREADY
GRADED A+
A microbiologist inoculates Staphylococcus aureus
into a culture medium. Following incubation, both
Staphylococcus aureus and Staphylococcus
epidermidis are determined to be growing in this
culture. What is the most likely explanation?
Select one:
a. The microbiologist used too much inoculum.
b. The culture was contaminated.
c. The incubation temperature was incorrect.
d. The culture medium was selective.
e. The culture medium was differential. - ANSWERb. The culture was contaminated.
Disease-causing microorganisms are called ______.
Select one:
a. decomposers
b. bacteria
c. pathogens
d. eukaryotes
e. fermenters - ANSWER-c. pathogens
Which scientific field is involved in the identification,
classification, and naming of organisms?
Select one:
a. Nomenclature
b. Taxonomy
c. Phylogeny
d. Pathology
e. Epidemiology - ANSWER-b. Taxonomy
Covalent bonds
Select one:
a. result from losing electrons.
b. are always polar.
c. are always nonpolar.
d. result from sharing electrons.
e. result from gaining electrons. - ANSWERUsing microbes to detoxify a site contaminated with
heavy metals is an example of ______.
Select one:
a. biotechnology
b. bioremediation
c. decomposition
d. immunology
e. epidemiology - ANSWER-bioremediation
A scientist who studies the influence of microbes in
the formation of caves is called a(n) ______.
Select one:
a. geomicrobiologist
b. astrobiologist
c. epidemiologist
d. immunologist - ANSWER-a. geomicrobiologist
Trees of life that illustrate the phylogenetic
relationships of all organisms were traditionally based
on ______; newer methods for determining
phylogeny rely on ______.
Select one:
a. morphology; nucleic acid sequences
b. nucleic acid sequences; morphology
c. morphology; virology
d. morphology; nutritional requirements
e. nucleic acid sequences; microbiomes - ANSWERa. morphology; nucleic acid sequences
What is the maximum number of electrons in the first
energy shell of an atom?
Select one:
a. 2
b. 4
c. 8
d. 18
e. 32 - ANSWER-a. 2
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