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01:694:301 Study Guide - Midterm Guide: Thylakoid, Photosystem I, P700Exam


Department
Molecular Biology and Biochemistry
Course Code
01:694:301
Professor
F Deis
Study Guide
Midterm

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Quick-Assessment Review
BIO
Instructions
BIO
Go to : http://
This assessment is worth 30 points.
The membrane component that mediates the conversion of light energy into chemical
energy is called a ____ .
1.
(1 point)
chromophorea.
granumb.
antenna pigmentc.
stromal lamellad.
reaction centere.
Photosystem I contains ____ .2.
(1 point)
P700
a.
P680
b.
D1/D2 dimerc.
Cyt B559
d.
All of the above are correct.e.
PSII is found in the3.
(1 point)
thylakoid membrane directly exposed to the stroma.a.
thylakoid membrane that is not exposed to the stroma.b.
stroma.c.
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inner membrane of chloroplasts.d.
All of the above are correct.e.
The CF1 component of the ATP synthase4.
(1 point)
possesses an ATP synthesizing activity.a.
possesses a proton-conducting channel.b.
projects into the stroma.c.
Both A and C are correct.d.
Both B and C are correct.e.
All of the following statements concerning light are true except5.
(1 point)
High-frequency radiation such as gamma rays and X-rays, which have long
wavelengths, are high energy.
a.
A wavelength is the distance from the crest of one wave to the crest of the next
wave.
b.
l=c/uc.
When light interacts with matter, it does so in discrete packets of energy called
photons.
d.
The intensity of electromagnetic radiation is proportional to a2.e.
As long as the spins of two unpaired electrons remain antiparallel, a molecule which
has absorbed light energy is said to be
6.
(1 point)
In the ground state.a.
an excited chromophore.b.
In an excited singlet state.c.
an ROS.d.
None of the above are correct.e.
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In ___________ a molecule's excited state decays as it emits a photon.7.
(1 point)
oxidation-reductiona.
radiationless decayb.
resonance energy transferc.
Both A and C are correct.d.
None of the above are correct.e.
All of the following statements concerning the oxygen-evolving complex in
chloroplasts are true except:
8.
(1 point)
It is found in PSI.a.
It is found in PSII.b.
It consists of a "clock" mechanism.c.
It consists of five oxidation states.d.
The evolution of one O2 requires the splitting of two H2O.e.
Which of the following is a component of PSI?9.
(1 point)
D1/D2 dimera.
Pheophytin ab.
Ferredoxinc.
Plasoquinoned.
Rubiscoe.
Pheophytin a is a molecule whose structure is similar to that of ________ .10.
(1 point)
b-carotenea.
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