BS 161 MSU - Exam 1 questions with answers

BS 161 MSU - Exam 1 questions with
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answers

1. Based on the primer on scale and approximation, the length of
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a ribosome is approximately ____ orders of magnitude smaller
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than the length of a eukaryotic cell and approximately ____
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orders of magnitude larger than the length of an amino acid.
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a. 3, 2
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b. 100, 10
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c. 1, 5
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d. 0,1 - CORRECT ANSWERS ✔✔a. 3, 2
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Translation is the process by which: |\ |\ |\ |\ |\




a. proteins are synthesized from DNA molecules.
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b. RNA is synthesized from protein.
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c. RNA is synthesized from DNA.
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d. DNA is synthesized from protein.
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e. proteins are synthesized from RNA molecules. - CORRECT
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ANSWERS ✔✔e. proteins are synthesized from RNA molecules.
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,All organisms use which of the following molecules to carry out
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cellular work such as growth and moving substances?
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a. membranes
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b. DNA|\




c. ATP
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d. RNA|\




e. None of the above - CORRECT ANSWERS ✔✔c. ATP
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A major difference between eukaryotic cells and prokaryotic cells
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is that:
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a. neither eukaryotic cells nor prokaryotic cells have a nucleus.
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b. both eukaryotic cells and prokaryotic cells have a nucleus.
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c. prokaryotic cells have a nucleus and eukaryotic cells do not.
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d. eukaryotic cells have a nucleus and prokaryotic cells do not. -
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CORRECT ANSWERS ✔✔d. eukaryotic cells have a nucleus and
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prokaryotic cells do not. |\ |\ |\




True or False: |\ |\ |\




Observations allow scientists to draw tentative explanations
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called hypotheses. - CORRECT ANSWERS ✔✔True
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Which of the following is NOT a key feature of individual cells?
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,a. the presence of a plasma membrane
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b. the ability to store and transit information using nucleic acids
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c. the presence of a nucleus
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d. the ability to harvest and transform energy from the
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environment - CORRECT ANSWERS ✔✔c. the presence of a |\ |\ |\ |\ |\ |\ |\ |\ |\


nucleus


Nucleic acids are important information storage molecules
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present in virtually every cell. Which of the following process are
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carried out by a cell when it accesses that information in the DNA
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of the genes?
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a. DNA replication and translation
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b. DNA replication and transcription
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c. transcription and translation - CORRECT ANSWERS ✔✔c.
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transcription and translation |\ |\




The energy before a chemical reaction and the energy after a
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chemical reaction is the same. This is an example of:
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, a. The second law of thermodynamics
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b. The first law of thermodynamics
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c. The scientific method
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d. Evolution by natural selection - CORRECT ANSWERS ✔✔b. The
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first law of thermodynamics
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If you were to compare the entropy of a dog to that of a bucket
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of water, which of the following statement would be TRUE?
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a. The entropy of the bucket of water and the entropy of the dog
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would be equal. |\ |\




b. The entropy of the dog would be greater.
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c. The entropy of the bucket of water would be greater. -
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CORRECT ANSWERS ✔✔c. The entropy of the bucket of water
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would be greater.|\ |\




Imagine that a researcher claimed to have created a genetically
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modified plant that produces twice as much energy as it
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harnesses from its environment. How could this be possible?
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a. The researcher has found a way to decrease the overall
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entropy of the plant. |\ |\ |\