Download Chapter 6-7 Review Game

Chapter 6-7 Review Game
AP Biology
Cellular Respiration and Photosynthesis
DIRECTIONS:
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Organize yourselves into 6 groups
Get a dry-erase board, marker and eraser for
each group
Put your brains together to answer these
questions about cell energy
For each question, simply write the letter you
decide is the best answer on the dry erase
board and show me when I ask!!
CELLULAR RESPIRATION
QUESTIONS
1. The function of cellular respiration is
to:
A.
B.
C.
D.
E.
Reduce CO2
Extract CO2 from the atmosphere
Extract usable energy from glucose
Synthesize macromolecules from monomers
Produce carbohydrates
C. Goal of cellular respiration is to extract
energy from the bonds stored in food (i.e.
glucose!)
2. An electron carrier acts as an energystorage molecule when it is __ (for
example, __):
A.
B.
C.
D.
E.
Reduced…NAD
Oxidized…NAD
Oxidized…NADH
Reduced…NADH
Oxidized…FADH2
D. NAD+ becomes NADH when it accepts an
electron (Gain Electron = Reduction; LEO
goes GER)
3. Which one of the following best
describes the electron transport chain?
A. Electrons are pumped across a membrane by active
transport
B. Acetyl CoA is fully oxidized to CO2
C. Hydrogens are added to CO2 to make an energy rich
compound
D. Electrons pass from one carrier to another, releasing
a little energy at each step
E. Glucose is broken down to a three-carbon
compound in preparation for the Citric Acid Cycle
D. Electrons move down the chain to more
electronegative molecules, releasing energy in a
slow fashion rather than one large burst of
energy (large burst is much less usable)
4. During respiration in a eukaryotic
cell, reactions of glycolysis occur __.
A.
B.
C.
D.
In the cytoplasmic fluid
In the mitochondria
On the inner mitochondrial membrane
Within the intermembrane space of the
mitochondrion
E. Across the inner membrane of the mitochondria
A. All organisms, including prokaryotes,
engage in glycolysis because it occurs outside
the mitochondria.
5. When pyruvic acid is converted to
acetyl CoA __.
A.
B.
C.
D.
E.
CO2 and ATP are formed
CO2 and NADH are formed
CO2 and coenzyme A are formed
One turn of the Citric Acid Cycle is completed
NAD is regenerated
B. A carbon is lost and creates CO2 as waste;
ATP formed as the phosphates are lost
during the re-configuration of the molecule
6. Of the metabolic pathways listed
below, the only pathway found in almost
all organisms is __.
A.
B.
C.
D.
E.
Aerobic cellular respiration
The Citric Acid Cycle
The electron transport chain
Glycolysis
Fermentation
D. A, B and C only happen in an aerobic
environment; E only happens in anaerobic
conditions; glycolysis occurs in all environments
7. Most of the high energy electrons
released from glucose by cell respiration
__.
A. Are used for synthesizing lactic acid
B. Are used to form ATP by the Citric Acid Cycle
C. Are bound to FAD to be sent through electron
transport
D. Are in the carbon dioxide
E. None of the above
E. Are picked up by NAD+ and taken to the
electron transport chain
8. Most of the NADH that delivers the
high energy electrons to the electron
transport chain comes from __.
A.
B.
C.
D.
E.
Chemiosmosis
The cytoplasm
Glycolysis
Biosynthesis
The Citric Acid Cycle
E. Glycolysis and prep for Krebs give only 2
NADH each; Krebs gives 3 NADH for each
glucose that enters for a total of 6 NADH
9. Why is the Citric Acid Cycle called a
cycle?
A. Glucose is cycled around and resynthesized
B. NAD+ and FAD are recycled
C. The two-carbon acetyl CoA binds to a four-carbon
molecule that is restored at the end of the cycle to
be used again in the Citric Acid Cycle
D. Carbon dioxide is cycled back to photosynthesis
E. NADH is cycled down the electron transport chain
C. The starting 4-C molecule (oxaloacetate) is
regenerated as citrate is reconfigured to a 5-C
and then a 4-C molecule, losing electrons and
phosphates along the way, picked up by NAD+/
10. In the Citric Acid Cycle, the energy
production per glucose molecule is __.
A.
B.
C.
D.
E.
A.
2 ATP, 6 NADH, 2 FADH2
38 ATP
4 ATP, 8 NADH
2 ATP, 6 NADH
1 ATP, 3 NADH, 1 FADH2
11. The energy given up by electrons as
they move through the electron transport
chain is used to __.
A.
B.
C.
D.
E.
Break down glucose
Make NADH and FADH2
Pump H+ through a membrane
Oxidize water
Manufacture glucose
C. The flow of those hydrogens through ATP
synthase helps to create lots of ATP…CHACHING
12. The ATP synthase in a human cell
gets energy for making ATP directly
from __.
A.
B.
C.
D.
Sunlight
The flow of H+ through a membrane
The oxidation of glucose
The movement of electrons through a series of
carriers
E. The reduction of oxygen
B. The flow of hydrogens “spins the turbine”
and phosphorylates ADP; CHA-CHING
13. During respiration in a eukaryotic
cell, the electron transport chain is
located in or on the __.
A.
B.
C.
D.
E.
Cytoplasmic fluid
The mitochondrion
Cristae of the mitochondrion
Intermembrane space of the mitochondrion
None of the above
C. The folds of the cristae give the
mitochondria LOTS of space to have the
ETC going…structure = function
14. Which part of the cellular
catabolism of glucose requires molecular
oxygen?
A.
B.
C.
D.
E.
Glycolysis
The Citric Acid Cycle
The electron transport chain
Fermentation
All of the above
C. Oxygen is the final electron acceptor and
forms water as a byproduct
15. The overall efficiency of respiration
is approximately __.
A.
B.
C.
D.
E.
0.50%
2%
40%
94%
100%
C. This is good…gas in a car is only about
25%
16. How many ATPs are gained by
substrate-level phosphorylation from the
complete breakdown of a single molecule
of glucose in the presence of oxygen?
A.
B.
C.
D.
E.
2 ATP
4 ATP
6 ATP
36 ATP
None of the above
B. SUBSTRATE-LEVEL gives us only 4…2 net
from glycolysis and 1 for Krebs (spins twice for
17. Fermentation is essentially glycolysis plus an extra
step in which pyruvic acid is reduced to form
lactic acid or alcohol and carbon dioxide. This
last step __.
A.
B.
C.
D.
E.
Removes poisonous oxygen from the environment
Extracts a bit more energy from glucose
Enables the cell to recycle NAD+
Inactivates toxic pyruvic acid
Enables the cell to make pyruvic acid into
substances it can use
C. The goal here is to get an electron carrier
BACK, we need to get NAD+ returning to
glycolysis to be able to continue producing
small amounts of ATP.
PHOTOSYNTHESIS QUESTIONS
1. In a rosebush, chlorophyll is located
in __.
A. Chloroplasts, which are in mesophyll cells in the
thylakoids of a leaf
B. Mesophyll cells, which are in the thylakoids in
chloroplasts in a leaf
C. Thylakoids, which are in mesophyll cells in the
chloroplasts of a leaf
D. Chloroplasts, which are in thylakoids in the mesophyll
cells of a leaf
E. Thylakoids, which are in chloroplasts in the mesophyll
cells of a leaf
E. From smallest to largest: thylakoid 
chloroplast  mesophyll cell  mesophyll
layer  leaf
2. The source of the oxygen produced by
photosynthesis has been identified
through experiments using radioactive
tracers. The oxygen comes from __.
A.
B.
C.
D.
E.
Carbon dioxide
Glucose
Radioisotopes
Water
light
D. Water – breaks down into hydrogen,
3. In photosynthesis, plants use carbon
from __ to make sugar and other organic
molecules.
A.
B.
C.
D.
E.
Water
Carbon dioxide
Chlorophyll
The sun
soil
B. Carbon dioxide (during Calvin cycle)
4. The photosynthetic event known as
the Calvin cycle occurs in the __.
A.
B.
C.
D.
E.
Thylakoid membrane
Thylakoid compartment
Stroma
Stomata
Matrix
C. Stroma; the light reactions occur in the
thylakoid
5. The synthesis of glucose by
photosynthesis is an endergonic process.
The source of the energy for the excited
electrons is __.
A. Chlorophyll
B. Carbon dioxide
C. Water
D. Glucose
E. Light
E. Light strikes the photosystem, exciting and
electron, as it flows down the ETC, a proton
gradient is created (much like respiration)
6. The reaction center, antenna
molecules, and primary electron
acceptors that cluster in the thylakoid
membrane form what structure?
A.
B.
C.
D.
E.
Fluorescence center
Photosystem
Electron transport chain
Carbon-fixation unit
Electromagnetic spectrum
B. Photosystem II and Photosystem I are where
light concentrates and excites electrons
7. The light reactions of photosynthesis
generate high-energy electrons, which
end up in __. The light reactions also
produce __ and __.
A. ATP…NADPH…oxygen
B. Oxygen…sugar…ATP
C. Chlorophyll…ATP…NADPH
D. Water…sugar…oxygen
E. NADPH…ATP…oxygen
E. NADPH is associated with photosynthesis; a
similar molecule (NADH) does essentially the
same job in cellular respiration
8. Light reactions do all of the following
except__.
A.
B.
C.
D.
Convert sunlight to chemical energy
Synthesize ATP and NADPH
Reduce CO2
Convey excited electrons from chlorophyll to
an electron acceptor
E. Absorb photons
C. CO2 is reduced into glucose during
cellular respiration
9. Molecular oxygen is produced during
__.
A.
B.
C.
D.
E.
Glycolysis
Light reactions of photosynthesis
The Calvin cycle
Aerobic respiration
Electron transport chain
B. Oxygen is one of the results of the splitting of
water; it is lost as a waste product but used as a
reactant in cellular respiration
10. Both mitochondria and chloroplasts
__.
A.
B.
C.
D.
E.
Use a H+ gradient to produce ATP
Obtain electrons from water
Reduce NAD+, forming NADP
Release oxygen as a byproduct
Are surrounded by a single membrane
A. The electron transport chain is seen in both
processes; it generates ATP as a result of the
flow of hydrogen ions through ATP synthase
11. During photosynthesis in a
eukaryotic cell, a high H+ concentration
accumulates or is formed in the __.
A.
B.
C.
D.
E.
Thylakoid membrane
Thylakoid compartment
Stroma
Stomata
Matrix
B. The hydrogen ions are concentrated INSIDE the
thylakoid, as opposed to cell respiration where the
hydrogen ions were concentrated on the
intermembrane space of the mitochondria (outside the
cristae)
12. The energy used to produce ATP in
the light reactions of photosynthesis
comes from the __.
A.
B.
C.
D.
E.
The burning of sugar molecules
Splitting of water
Movement of H+ through a membrane
Carbon fixation
Fluorescence
C. Again, the flow of hydrogen causes ATP
synthase to phosphorylate ADP
13. Which of the following correctly
matches each of the inputs of the Calvin
cycle with its role in the cycle?
A.
B.
C.
D.
E.
B.
Carbon dioxide: high-energy
electrons…ATP:energy…NADPH:high energy-electrons
Carbon dioxide:carbon…ATP:energy…NADPH:highenergy electrons
Carbon dioxide:high-energy
electrons…ATP:carbon…NADPH:energy
Carbon dioxide:energy…ATP:carbon…NADPH:highenergy electrons
Carbon dioxide:hydrogen…ATP:carbon…NADPH:energy
Can I have a copy of this,
PLLLEAAAAAAASEEEEEEEEE?
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NO!!!
All of these questions
came from the online
chapter tests…you
should be doing these
on your own to prepare
for the tests!!
14. The reactions of the Calvin cycle are
not directly dependent on light, but they
usually do not occur at night. Why?
A. It is often too cold at night for these reactions to
take place.
B. Carbon dioxide concentrations decrease at night.
C. The Calvin cycle depends on the products of the
light reactions.
D. Plants usually open their stomata at night.
E. At night, plants cannot produce the water needed
for the Calvin cycle.
C. Calvin cycle requires NADPH and ATP
(produced in the light reactions) to proceed
15. What is the role of NADP+ in
photosynthesis?
A. It assists chlorophyll in capturing light.
B. It acts as the primary electron acceptor for the
photosystems.
C. As part of the electron transport chain, it
manufactors ATP.
D. It assists photosystem II in the splitting of water.
E. It is reduced and then carries electrons to the Calvin
cycle.
E. NADP+ gets reduced (GER  NADPH)
and transports those electrons to the Calvin
cycle to help fix CO2