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BIOL 1107 EXAM 3 STUDY GUIDE QUESTIONS WITH 100% CORRECT ANSWERS!!
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BIOL 1107 EXAM 3 STUDY GUIDE QUESTIONS WITH 100% CORRECT ANSWERS!!
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BIOL 1107 EXAM 3 STUDY GUIDEQUESTIONS WITH 100% CORRECT
ANSWERS!!
1 of 49
Term
What property of DNA fragments accounts for their movement
through the gel towards the cathode during gel electrophoresis?
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size voltage
charge polarity
, Don't know?
2 of 49
Term
Describe the passage of energy from light until it is captured in
the primary electron acceptor.
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Prokaryotes use DNA gyrase to pack their chromosome into the cell using
supercoiling. Eukaryotic chromosomes are wrapped around histone
proteins that create heterochromatin and euchromatin.
After splitting water in PS-II, high energy electrons are delivered
through the chloroplast electron transport chain to PS-I.
Prokaryotes have a single, circular chromosome, while eukaryotes
have multiple, linear chromosomes. Prokaryotes pack their
chromosomes by super coiling,
managed by DNA gyrase. Eukaryote chromosomes are wrapped
around histone proteins that could form heterochromatin, which is
not present in prokaryotes.
Photosystem II consists of a light harvesting complex and a reaction
center.
Pigments in the light harvesting complex pass the light energy to
chlorophyll a molecules in the reaction center. The light excites
an electron from chlorophyll a molecules, which is then passed
to the primary electron acceptor.
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, 3 of 49
Term
How do the cytochrome complex components involved
in photosynthesis contribute to the electron transport
chain?
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Plastoquinone and
plastocyanine perform
redox reactions that The electron transport
allow the chain is primarily driven by
electron to move down atp synthase activity.
the electron transport
chain into Photosystem I.
Cytochrome c oxidase is Electrons are transferred directly to
responsible for pumping oxygen without any redox
protons into the thylakoid reactions.
lumen.
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4 of 49
Term
What cellular features and processes are similar in both
photosynthesis and cellular respiration?
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, Both processes produce lactic Both processes rely solely on
acid as a byproduct. anaerobic conditions to function.
Both processes are
contained in organelles Both processes occur
with double exclusively in the cytoplasm
membranes, and use a of the cell.
version of the cytochrome
complex.
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5 of 49
Term
What is the external source of the electrons that
ultimately pass through photosynthetic electron
transport chains?
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oxygen atp
water glucose
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6 of 49
Term
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