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BIO 171 Exam 1/183 Questions and Answers/100% Scores
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BIO 171 Exam 1/183 Questions and Answers/100% Scores
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BIO 171 Exam 1/183 Questions andAnswers/100% Scores
Which of the following types of organisms are composed of one or more
cells?
a. plants
b. yeast, a fungus
c. diatom, a protist
d. bacteria
e. all living organisms are composed of cells
f. archaea
g. animals - -e. all living organisms are composed of one or more cells
- Which statement is NOT part of biologists' current insights about the
nature of life?
a. all living organisms consist of one or more cells
b. the first cell arrived on Earth from an extraterrestrial source
c. cells arise from other cells
d. cells acquire energy and nutrients from their environment
e. cells contain hereditary information that passes from one generation of
cells to the next - -b. the first cell arrived on Earth from an extraterrestrial
source
- In lecture we discussed the features of living organisms that most
scientists would agree are reasonable. Viruses have some, but not all, of
these characteristics. Which of the following characteristics of life do viruses
NEVER exhibit, even when they are inside their hosts cell?
a. viruses have heritable genetic information
b. viruses are compose of one or more cells
c. viruses are carbon based
d. viruses evolve
e. viruses are composed of proteins and nucleic acids - -b. viruses are
compose of one or more cells
- True or false: Mutations always result in the death of the organism which
acquires them. - -False
- The type of RNA that physically interacts with a ribosome, providing the
sequence information for a specific protein, is abbreviated as
a. rRNA
b. mRNA
c. tRNA - -b. mRNA
- The scientific process... (choose all that apply)
,a. can address any and all questions
b. can help us understand how our world works
c. is only used at universities
d. is based on the opinions of scientists - -b. can help us understand how our
world works
- How any experiments have been conducted worldwide to test Darwin's
initial hypothesis regarding natural selection?
a. <100
b. one
c. 50
d. thousands - -d. thousands
- True or false: A tentative explanation based on an observation is referred
to as a hypothesis. - -True
- A single experiment or observation can _____ a hypothesis.
a. reject
b. prove
c. reject or prove
d. support
e. reject or support - -e. reject or support
- Which of the following is the BEST description of a control treatment in an
experiment?
a. controls are simply replicates of the test group
b. the control treatment is a treatment which is chosen at random
c. the control treatment is a treatment in which the researcher knows what
outcome to expect
d. there should be three types of control treatments in any experiment
e. the control and test group should have several differences between them
f. there can be an unlimited number of differences between the control and
test groups - -c. the control treatment is a treatment in which the researcher
knows what outcome to expect
- What did the researchers find the relative abundances of the archaea and
bacteria considered in this study? (Karner, Markus study)
a. In the deep water (~5000 m deep), all the types of archaea are
approximately as abundant as the bacteria
b. In the deep water (~5000 m deep), the bacteria are twice as abundant as
the thaumarchaeota
c. In the near surface water (5 m deep), there are bacteria but relatively few
archaea
d. In the near surface water samples, the count from the non-specific probe
is almost the same as the count from the bacterial probe
, e. In the near surface water, most of the microbes came from the Archaea
domain - -c. In the near surface water (5 m deep), there are bacteria, but
relatively few archaea
- On a bar graph, imagine that A-F bars are treatments in a study and the
abr graoh is published in a scientific journal, that is, an official and
professional publication Given this, which of the following do the bars
labelled A-F MOST likely represent?
a. averages of data collected from representative samples subjected to 6
different treatments
b. averages of data from treatments given to a whole population
c. raw data (no processing or calculations) from measurements of samples
d. continuous data from representatives of a population of various lengths
e. the positive correlation between discrete categories of data and a
representative sample of individuals of various lengths - -a. averages of data
collected from representative samples subjected to 6 different treatments
- Karner, Markus graph (Archaea and bacteria in the ocean). The figure is
showing the results of a study of...
a. abundance of bacteria, archaea, and eukaryotes in the deep ocean
b. abundance of bacteria, archaea, and viruses in the deep ocean
c. abundance of bacteria and some archaea in the deep ocean
d. infection by euryarchaeota, a bacteria
e. viral diversity in the deep ocean
f. infection by thaumarchaeota, a type of archaeon - -c. abundance of
bacteria and some archaea in the deep ocean
- On a graph where the y-axis and x-axis jump from 1 to 10 to 100, with
approximately equal space between 1-10 and 10-100. Which of the following
is/are reasonable interpretations of this graph?
a. the variables on the axes are shown using a logarithmic scale
b. large increases in island area have relatively small effects on species
numbers
c. the difference in the number of species on islands measuring 1 square
mile, contrasted with islands measuring 100 square miles IS THE SAME as
the difference in number of species on islands measuring 10 square miles,
contrasted with islands measuring 100 square miles
d. all of these options are valid interpretations of this graph - -a. the
variables on the axes are using a logarithmic scale
- In order to determine the relative abundance of the different types of
microbes these researchers used:
a. rRNA
b. amino acids
c. proteins
d. DNA
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