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CMB Final UPDATED Exam Questions and CORRECT Answers

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CMB Final UPDATED Exam Questions
and CORRECT Answers
The volcanic laboratory experiments performed by Stanley Miller were able to synthesize
which of the following biomolecules? - Correct Answer- amino acids

The differential staining of bacteria into Gram+ and Gram- stained samples is due to which of
the following structural component of the bacteria? - Correct Answer- the makeup of their
cell wall

Which of the following is not a 'universal' characteristic all living cells? - Correct Answer- a
free energy status that is at chemical equilibrium

An advantage of hydrophobic molecules, as phospholipids in living cells is? - Correct
Answer- -spontaneous self-assembly
-repulsion of large hydrophobic molecules
-formation
-reassembly of a torn bilayer

The most definitive characteristic of living systems is their ability to self-replicate? - Correct
Answer- true

Viruses exhibit many of the common biochemical processes found in living organisms, but
lack the ability? - Correct 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? - Correct Answer- zebrafish

The first Human cells successfully grown in culture were? - Correct Answer- HeLa cells

The Biogenic Law ("All living cells arise from preexisting cells") was first espoused by? -
Correct Answer- Rudolph Virchow

,Staphylococcus aureus has the membrane and wall structure shown in the - Correct 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? - Correct Answer- -water vapor
-methane
-carbon dioxide
-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? - Correct Answer- true

The methanogens (prokaryotes that produce methane) belong to which biological Domain? -
Correct 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? - Correct Answer- true

Experiment comparing gene locations within a nucleus of nocturnal and diurnal animals
indicated that bundles of similar gene clusters occupy different locales? - Correct Answer-
false

Kinesin motor proteins use ATP to change their shape and thus can walk along? - Correct
Answer- -DNA molecules in the. nucleus
-microtubules in cells

Cell and molecular biology often includes aspects from all of the following biological
disciplines except? - Correct Answer- it includes all aspects from 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? -
Correct Answer- reductionism (grind and find)

,An emergent property is most likely? - Correct Answer- unexpected, non-trivial properties if
simpler components that are from complexity

An 'evolutionary clock' measures? - Correct Answer- a DNA sequence divergence

The first "cells" were observed by? - Correct Answer- Robert Hooke

The 18-19th century scientific thought that the Nature of Life was the result of a force
peculiar to living - Correct Answer- Vitalism

Carl Woese used which of the following cellular molecules to determine the highest order of
biological taxonomic rank, Domains? - Correct Answer- ribosomal RNA

Messenger RNAs of cells can be silenced (degraded rapidly or sequestered) by? - Correct
Answer- miRNA

In cell and molecular biology a model organism is one that likely is? - Correct Answer- -
plentiful
-has a simple genome
-a prolific reproducer
-has unique properties for analysis

Which of the following would favor an "RNA world" hypothesis? - Correct Answer- the
discovery of new life forms that encode their genetic info in RNA and not DNA

The type of light microscopy that uses beams of polarized light and produces images that
look as if a sample cell is casting a 3D shadow is? - Correct Answer- differential interference-
contrast microscopy

The instrument used to cut extremely thin section of biological samples is? - Correct Answer-
microtome

A researcher would like to film the movement of chromosomes during cell division. The best
choice of - Correct Answer- a light microscope because the specimen is alive

, The molecules made abiotically by Stanley Miller were quite similar to the molecules found
in meteorites as the Murchison meteorite discovered in Australia? - Correct Answer- true

A graduate student in microscopy is perplexed for his fluorescently stained cells appear fuzzy
and
somewhat out of focus when viewed in the lab's fluorescent microscope. His major professor
recommends that he should use which of the following microscopes to improvement the
resolution and the plane of focus in his fluorescently stained cells? - Correct Answer- a
confocal fluorescent microscope

A 3D computer reconstruction of a series of stacked TEM images of cells structures creates
an image known as a? - Correct Answer- tomogram

If you were to put the following events in the most likely order of how life might have
emerged on Earth,
what would be the most likely sequence order (earliest to latest)? - Correct Answer- -
monomers formed
-polymers formed
-protobionts emerged
-metabolism and self-replication

Which of the following provides support for the hypothesis that all known organism may be
derived from a universal common ancestor? - Correct Answer- -presence of similar organic
molecules in current living organism
-protein being made of only L-amino acids
-templated polymerization during DNA replication
-a genetic code

The number of DNA molecules in the prokaryotic bacteria, Escherichia coli, is? - Correct
Answer- 1

An unfavorable reaction (has a positive +ΔG) can be driven to occur by? - Correct Answer-
coupling it to a reaction with a -ΔG

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