Photosynthesis Quiz
1. The protons/hydrogen ions go from ________
to ________ when the electron goes through
the electron transport chain.
2. Name the protein in the thylakoid membrane
that makes ATP when protons go through it.
3. Why do protons go through the above protein
during the light reactions?
4. Where do ATP and NADPH go after the light
reactions?
5. What molecules enter the Calvin cycle?
Photosynthesis Quiz
6. What molecules are produced in the Calvin
cycle?
7. What do CAM plants do to conserve water, but
still be able to go through photosynthesis?
8. What in the thylakoid membrane contains the
electrons that get excited? (really important
molecule)
9. What drives H+ into the thylakoid?
10. Do organisms other than plants go through
photosynthesis?
Cellular Respiration
Glycolysis converts 1 glucose into 2 pyruvate
Aerobic Respiration
Anaerobic Respiration
2 ATP/ glucose
36 ATP/ glucose
Fig. 8-2b, p. 124
Aerobic Respiration
Cytoplasm
glucose
2 ATP
ATP
Glycolysis
2 NADH
1
4 ATP (2
net)
ATP
2 pyruvate
Mitochondrion
2
Krebs
Cycle
6 CO2
2 ATP
ATP
8 NADH, 2 FADH2
ATP
3
oxygen
Electron Transfer
Chain
32 ATP
Stepped Art
Fig. 8-3a, p. 125
Glycolysis Summary
A An enzyme splits a
pyruvate molecule into a
two-carbon acetyl group
and CO2. Coenzyme A
binds the acetyl group
(forming acetyl–CoA). NAD+
combines with released
hydrogen ions and
electrons, forming NADH.
Acetyl–CoA
Formation
pyruvate
NAD+
coenzyme A
NADH
CO2
B The Krebs cycle starts as
one carbon atom is
transferred from acetyl–
CoA to oxaloacetate. Citrate
forms, and coenzyme A is
regenerated.
acetyl–CoA
coenzyme A
H The final steps of the
Krebs cycle regenerate
oxaloacetate.
citrate
C A carbon atom is removed
from an intermediate and
leaves the cell as CO2. NAD+
combines with released
hydrogen ions and
electrons, forming NADH.
D A carbon atom is
removed from another
intermediate and leaves the
cell as CO2, and another
NADH forms.
CO2
oxaloacetate
Krebs
Cycle
NAD+
G NAD+ combines with
hydrogen ions and
electrons, forming NADH.
NADH
NADH
NAD+
CO2
NAD+
FADH2
FAD
NADH
Pyruvate’s three carbon atoms have
now exited the cell, in CO2.
ADP + Pi
ATP
F The coenzyme FAD combines with hydrogen ions
and electrons, forming
FADH2.
E One ATP forms by
substrate-level
phosphorylation.
Stepped Art
Fig. 8-6, p. 129
Electron Transfer Phosphorylation
Summary: Aerobic Respiration
Sprinters and Lactate Fermentation
The Fate of Glucose at Mealtime
and Between Meals
 When blood glucose concentration rises, the
pancreas increases insulin secretion
• Cells take up glucose faster, more ATP is formed,
glycogen and fatty-acid production increases
 When blood glucose concentration falls, the
pancreas increases glucagon secretion
• Stored glycogen is converted to glucose
Links Between Photosynthesis
and Aerobic Respiration