©JOSHCLAY 2024/2025. YEAR PUBLISHED 2024.
BSCI 207 Final Exam Questions and
Answers 100% Solved
Organisms are typically open systems. What is an example of something
that is not open with regards exchanging mass? - ✔✔the entire earth
What is the best description of the relationship between autotrophs and
heterotrophs? - ✔✔Although an autotroph is relatively self sufficient, it
does exchange matter with heterotrophs.
ATP is a great source of energy that enable organisms to do work. What
kind(s) of work is it used for? - ✔✔It phosphorylates metabolites to
perform chemical work and proteins to perform physical work.
Which scientist first described free energy and had it named after him? -
✔✔Gibbs
When do spontaneous reactions occur? - ✔✔They can happen if the
reactants have enough energy to get over any energy barrier.
Enzymes are useful in chemical reactions because... - ✔✔They lower
the activation energy for the reaction.
, ©JOSHCLAY 2024/2025. YEAR PUBLISHED 2024.
Membranes form spontaneously from phospholipid monomers because
bringing the monomers close together frees up the water molecules that
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 kind of gene would you want to use to compare humans to
chimpanzees? - ✔✔Mitochondrial DNA because it changes quick
enough to aquire changes in the 6MY divergence time.
Carl Woese studied the phylogenetic relationships using the rRNA gene
because there weren't many morphological characters that could
distinguish different prokaryotic groups. - ✔✔true
, ©JOSHCLAY 2024/2025. YEAR PUBLISHED 2024.
What was the amazing discovery made by Carl Woese? - ✔✔That
archaens were a unique form of prokaryotes more closely related to
eukaryotes than bacteria.
How did Iwabe et al's study differ from that of Carl Woese? - ✔✔B. They
compared a different gene that had duplicated for the same organisms.
C. They got a gene tree for each gene copy that was rooted.
When building a phylogenetic tree to show organismal relationships, it is
best to use: - ✔✔Genes that undergo vertical gene transfer
Lateral gene transfer likely occurred - ✔✔Frequently in the last universal
common ancestral community
The ring of life is a new representation of the idea that - ✔✔The
evolution of eukarya from the merger of one archaean and one bacteria
What is difficult about determining how life arose? - ✔✔The original
forms of life probably no longer exist.
Even the simplest present day forms of life are probably more complex
than original life was.
It is unclear whether early life depended on nucleic acids or proteins.
, ©JOSHCLAY 2024/2025. YEAR PUBLISHED 2024.
What is some of the best support that early life relied on catalyzed
reactions that occurred on metal deposits near hot thermal vents? -
✔✔Present day enzymes still utilize metal atoms at their reactive
centers.
Why do organisms need to store information? - ✔✔A. Information stores
the solutions for how to metabolically interact with the environment.
B. Information can pass down enzymatic solutions to the next generation.
Which of the following is a true statement about information? -
✔✔Stability means information remains constant over time.
There are many differences between DNA and RNA. DNA is ____ stable
than RNA. This is because it is ____ stranded. This makes DNA acquire
_____ errors. However, DNA _____ autocatalytic. - ✔✔more, double,
fewer, is not
Which evidence does NOT support the idea that RNA was the first system
to both store information and perform enzymatic reactions? - ✔✔RNA is
more redundant than DNA.
Why does life require abiotic synthesis? - ✔✔It needs to generate
biologically relevant molecules from inorganic ones.
BSCI 207 Final Exam Questions and
Answers 100% Solved
Organisms are typically open systems. What is an example of something
that is not open with regards exchanging mass? - ✔✔the entire earth
What is the best description of the relationship between autotrophs and
heterotrophs? - ✔✔Although an autotroph is relatively self sufficient, it
does exchange matter with heterotrophs.
ATP is a great source of energy that enable organisms to do work. What
kind(s) of work is it used for? - ✔✔It phosphorylates metabolites to
perform chemical work and proteins to perform physical work.
Which scientist first described free energy and had it named after him? -
✔✔Gibbs
When do spontaneous reactions occur? - ✔✔They can happen if the
reactants have enough energy to get over any energy barrier.
Enzymes are useful in chemical reactions because... - ✔✔They lower
the activation energy for the reaction.
, ©JOSHCLAY 2024/2025. YEAR PUBLISHED 2024.
Membranes form spontaneously from phospholipid monomers because
bringing the monomers close together frees up the water molecules that
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 kind of gene would you want to use to compare humans to
chimpanzees? - ✔✔Mitochondrial DNA because it changes quick
enough to aquire changes in the 6MY divergence time.
Carl Woese studied the phylogenetic relationships using the rRNA gene
because there weren't many morphological characters that could
distinguish different prokaryotic groups. - ✔✔true
, ©JOSHCLAY 2024/2025. YEAR PUBLISHED 2024.
What was the amazing discovery made by Carl Woese? - ✔✔That
archaens were a unique form of prokaryotes more closely related to
eukaryotes than bacteria.
How did Iwabe et al's study differ from that of Carl Woese? - ✔✔B. They
compared a different gene that had duplicated for the same organisms.
C. They got a gene tree for each gene copy that was rooted.
When building a phylogenetic tree to show organismal relationships, it is
best to use: - ✔✔Genes that undergo vertical gene transfer
Lateral gene transfer likely occurred - ✔✔Frequently in the last universal
common ancestral community
The ring of life is a new representation of the idea that - ✔✔The
evolution of eukarya from the merger of one archaean and one bacteria
What is difficult about determining how life arose? - ✔✔The original
forms of life probably no longer exist.
Even the simplest present day forms of life are probably more complex
than original life was.
It is unclear whether early life depended on nucleic acids or proteins.
, ©JOSHCLAY 2024/2025. YEAR PUBLISHED 2024.
What is some of the best support that early life relied on catalyzed
reactions that occurred on metal deposits near hot thermal vents? -
✔✔Present day enzymes still utilize metal atoms at their reactive
centers.
Why do organisms need to store information? - ✔✔A. Information stores
the solutions for how to metabolically interact with the environment.
B. Information can pass down enzymatic solutions to the next generation.
Which of the following is a true statement about information? -
✔✔Stability means information remains constant over time.
There are many differences between DNA and RNA. DNA is ____ stable
than RNA. This is because it is ____ stranded. This makes DNA acquire
_____ errors. However, DNA _____ autocatalytic. - ✔✔more, double,
fewer, is not
Which evidence does NOT support the idea that RNA was the first system
to both store information and perform enzymatic reactions? - ✔✔RNA is
more redundant than DNA.
Why does life require abiotic synthesis? - ✔✔It needs to generate
biologically relevant molecules from inorganic ones.
