AP Biology Photosynthesis Packet Review
ANSWERS
Ask Yourself
1.
The pH is lowest in the thylakoid space
in a chloroplast. The H+ ions are
pumped into the space to set up the
concentration gradient. The pH is
lowest in the outer compartment in a
mitochondrion. The H+ ions are pumped
pumped out to the outer compartment to
set up a concentration gradient.
2. The H+ ions come from the splitting of
H2O by the manganese containing
enzyme and obviously from the
cytochrome complex pumping H+ ions into
the thylakoid lumen.
3. ATP is created by adding an inorganic
phosphate to ADP to create ATP. A H+
ion gradient is set up across a membrane
which sets up the potential energy to
drive chemiosmosis. Chemiosmosis is the
movement of H+ ions through ATP
synthase. The chemiosmotic energy is
couple to the endergonic reaction of
smushing a phosphate group onto ADP to
create ATP. The only difference
between the chloroplast and the
mitochondrion is the orientation of the
ATP synthase. The head of the lollipop
is facing outward toward stroma in the
chloroplast and inward toward matrix in
the mitochondrion.
Testing
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
Recall
Reduced
stores
red, blue-violet
ATP
O2, NADPre, ATP (after H+ gradient)
ATP, NADPre
PGAL, ADP, NADPox
thylakoid membrane, stroma
water
lower
C4
12.
13.
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18.
19.
20.
21.
22.
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24.
25.
26.
27.
28.
29.
30.
31.
32.
33.
34.
35.
36.
37.
38.
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41.
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43.
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45.
46.
47.
48.
49.
50.
51.
PEP (C3)
[PEP + CO2 = C4]
synthesize carbohydrate
D
E
C
B
D
B
D
B
A (This is a bad question!)
B
E
D
E
A
B
C
C
C (key is – in the reaction centers)
A
C
D
C
E
E
B
C
B
A
C
C
D
A
A
B
D
B
B
E (Krantz anatomy = mesophyll cells
with PEP carboxylase completely
surrounding the bundle sheath cells
which contain Rubisco and carry out the
Calvin cycle.)
52. B