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BIL 255 FINAL EXAM WITH ALL QUESTIONS AND VERIFIED ANSWERS
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BIL 255 FINAL EXAM WITH ALL QUESTIONS AND VERIFIED ANSWERS...
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Kinesin motor proteins use ATP to change their shape and thus can walk along.- ANSWER Microtubules in cells
Cell and molecular biology often includes aspects from all of the following
biological disciplines except? - ANSWER Choose this answer if it includes
aspects from all of these disciplines: biochemistry, molecular genetics,
development biology, and neurobiology
The phrase "Knowing the parts may explain the function of the whole" is
descriptive of which of the following procedural experimental techniques of cell
and molecular biology? - ANSWER Reductionism (grind & find)
An emergent property is most likely. - ANSWER Unexpected, non-trivial
properties of simpler components that are from complexity.
An 'evolutionary clock' measures? - ANSWER DNA sequence divergence
The first "cells" were observed by? - ANSWER Robert Hooke
The 18-19th century scientific thought that the Nature of Life was the result of a
force peculiar to living organisms only was known as? - ANSWER Vitalism
Carl Woese used which of the following cellular molecules to determine the
highest order of biological taxonomic rank, Domains? - ANSWER ribosomal
RNA
The methanogens (prokaryotes that produce methane) belong to which
biological Domain? - ANSWER Domain Archaea
,A major paradigm of cellular biology is that all cells living today can trace their
ancestry back to a presumed ancestral cell? - ANSWER True
Experiment comparing gene locations within a nucleus of nocturnal and diurnal
animals indicated that bundles of similar gene clusters occupy different locales?
- ANSWER False
The differential staining of bacteria into Gram+ and Gram- stained samples is
due to which of the following structural component of the bacteria? -
ANSWER The makeup of their cell wall components
Which of the following is not a 'universal' characteristic of all living cells? -
ANSWER A free energy status that is at chemical equilibrium
An advantage of hydrophobic molecules, as phospholipids in living cells is? -
ANSWER Choose this choice if all of these are advantages of hydrophobics:
spontaneous self-assembly, repulsion of large hydrophilic molecules, formation
of bilayers, and reassembly of a torn bilayer
The most definitive characteristic of living systems is their ability to self-
replicate? - ANSWER True
Viruses exhibit many of the common biochemical processes found in living
organisms, but lack the ability? - ANSWER To reproduce themselves on their
own
Which of the following model organisms has served as a system to analyze the
development of vertebrate body tissue? - ANSWER Zebra fish
The first Human cells successfully grown in culture were? - ANSWER HeLa
cells
The Biogenic Law ("All living cells arise from preexisting cells") was firs
espoused by? - ANSWER Rudolph Virchow
Staphylococcus aureus has the membrane and wall structure shown in the figure
to the right. If we were to stain these cells using the Gram stain procedure, then
the appearance of these bacteria under a light microscope?
, Image: Cell wall = peptidoglycan layer (complex of sugars and aa), plasma
membrane, and proteins - ANSWER Would appear purple-black and be
Gram+ cells
In searching for extraterrestrial life the key chemical fingerprints of life one
might best look for should include? - ANSWER All of these would be key
molecules to search for: water vapor, methane, carbon dioxide, and oxygen
Improvements in the ability of instruments to measure biological parameters of
living organism is as important, if not more so, than the hypothesis itself? -
ANSWER True
The volcanic laboratory experiments performed by Stanley Miller were able to
synthesize which of the following biomolecules? - ANSWER Amino acids
If you were to put the following events in the most likely order of how light
might have emerged on Earth, what would be the most likely sequence order
(earliest to latest)?
A. Polymers formed
B. Protobionts emerged
C. Metabolism & self-replication
D. Monomers formed - ANSWER D, A, B, C
Which of the following provides support for the hypothesis that all known
organism may be derived from a universal common ancestor? - ANSWER
Choose this answer if all of these do support the hypothesis: presence of similar
organic molecules in current living organisms, protein being made of only L-
amino acids, templated polymerization during DNA replication, and a common
genetic code
The number of DNA molecules in the prokaryotic bacteria, Escherichia coli, is?
- ANSWER 1
An unfavorable reaction (has a positive DeltaG) can be driven to occur by? -
ANSWER Coupling it to a reaction with a negative DeltaG
All biological proteins in living cells are made of? - ANSWER Alpha-L amino
acids
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