BSCI 207 Unit 1 Exam Questions and Answers 100% Solved
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Course
BSCI 207
Institution
BSCI 207
BSCI 207 Unit 1 Exam Questions and
Answers 100% Solved
Free energy differs from total energy because: - It is available to do
work.
Life relies on two key reactions: the oxidation of glucose to produce CO2
and water and the reaction of CO2 and water to produce glucose. These
reactions are: - ...
surrounded them. This decreases the entropy of assembly of the
monomers, but increases to a greater extent the entropy of the water
molecules. - ✔✔True
What are chaperonins and when are they needed? - ✔✔Chaperonins
may be needed to provide a controlled environment for larger biological
structures to assemble.
What is the trade off that all organisms make to achieve ordered structures
for life? - ✔✔Trade organismal order for disorder in their surroundings.
What does the formation of folded proteins and membranes have in
common? - ✔✔both folded proteins and membranes decrease in entropy
while their surroundings increase in entropy
Why can comparisons between DNA or amino acid sequences be used like
a molecular clock? - ✔✔They acquire substitutions at a steady rate with
each sequence change acting as the tick of the clock.
You can compare the gene sequences for a pair of organisms to see what
fraction of the sites are the same. As the pair of organisms become
evolutionarily further apart, the sequence similarity decreases. For large
evolutionary times, the sequence similarity will decrease to 25% though
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