Quiz Questions- BIO 1305 Lawson Questions & Answers
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Course
- BIO 130
Institution
- BIO 130
What are the levels of biological hierarchy? - ANSWERSpopulations, cells, organisms, ecological systems, molecules
T/F All bacteria are smaller than eukaryotes - ANSWERSfalse
T/F Big cells have big genomes - ANSWERSfalse
T/F Nanobacteria are the smallest living organism - ANSWERSfalse
T...
Quiz Questions- BIO 1305 Lawson
Questions & Answers
What are the levels of biological hierarchy? - ANSWERSpopulations, cells, organisms,
ecological systems, molecules
T/F All bacteria are smaller than eukaryotes - ANSWERSfalse
T/F Big cells have big genomes - ANSWERSfalse
T/F Nanobacteria are the smallest living organism - ANSWERSfalse
T/F Basic research must be designed to have clear translatable benefit to humanity in
order to contribute to the real world, such as medicine - ANSWERSfalse
T/F Kary Mullis, the inventor of PCR, did so independently and without help from other
scientists - ANSWERSfalse
T/F DNA evidence is used to prove guilt in crimes - ANSWERSfalse
T/F A person's DNA will determine how smart the person will be - ANSWERSfalse
T/F A person's DNA will determine which jobs are suitable for each person -
ANSWERSfalse
T/F Intelligence is predetermined at the time of conception - ANSWERSfalse
T/F Heritable information provides for continuity of life - ANSWERStrue
T/F Nonheritable information is transmitted within and between biological systems -
ANSWERStrue
T/F Imperfect information transfer produces variation - ANSWERStrue
T/F Information can be expressed and regulated without loss of content -
ANSWERStrue
Why was Avery's use of N/P ratio in the heritable material so important in his research?
- ANSWERSDNA has a N/P ratio close to 1.7
What mathematical truth did Griffith incorporate into his conclusion that protein was the
heritable material? - ANSWERS20 amino acids makes a better code than 4 nucleotides
, T/F The outcome of the positive and negative controls assure the investigator that the
experiment is being conducted appropriately - ANSWERStrue
Why are positive and negative controls so important in an experiment if their outcomes
are known in advance? - ANSWERSpositive and negative control outcomes assure the
investigator that the experiment is being conducted appropriately
What was the purpose of the famous Hershey and Chase experiement? - ANSWERSto
disprove protein was the heritable material
What could be a conclusion made about the heritable material experimentation made by
Hershey and Chase? - ANSWERSmost of the viral protein was outside the cells, and
thus was unable to transmit the heritable information to the newly infected cells
Why was the choice of a bacteriophage a good one for Hershey and Chase? -
ANSWERSthe virus only infected bacteria, not humans; the virus grew very quickly; the
virus was composed of only protein and DNA; the virus was a well-studied model
system
Hershey and Chase presented one more piece of evidence that helped convince
skeptics that DNA is the heritable material, although this evidence was never published
in a figure or table. What was that evidence? - ANSWERSviral progeny contained 32P
What is the ranking of chemical bonds from weakest to strongest? -
ANSWERShydrogen, ionic, covalent
Given that hydrogen bonds can only span 2 angstroms, how many hydrogen bonds hold
together the different base pairs in DNA? - ANSWERSG&C = 3 H bonds; A&T = 2 H
bonds
How did the isotopes 14N and 15N factor into the Meselson and Stahl experiments? -
ANSWERSthey started with DNA that incorporated heavier 15N and could separate
from the lighter 14N
T/F 15N has an extra neuron and is not radioactive, but it is denser which would alter
DNA's density when incorporated into DNA - ANSWERStrue
T/F DNA will form a single band when centrifuged in a salt gradient - ANSWERStrue
When quantifying the amount of DNA in a band, Meselson and Stahl did what? -
ANSWERScalculated the area under the curve of the DNA intensity plots
In gel electrophoresis, the _______ charge on DNA results in its migration towards the
________ charged anode - ANSWERSnegatively; positively
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