WorksheetsAP Energy
Total questions: 85
Worksheet time: 1hrs 24mins
Name
Class
Date
1.
Which of the following are products of the light reactions of photosynthesis that are utilized in the Calvin cycle?
a)
CO2 and glucose
b)
H2O and O2
c)
electrons and H+
d)
ATP and NADPH
2.
Where does the Calvin cycle take place?
a)
stroma of the chloroplast
b)
thylakoid membrane
c)
outer membrane of the chloroplast
d)
interior of the thylakoid membrane
3.
When oxygen is released as a result of photosynthesis, it is a direct by-product of
a)
reducing NADP+
b)
splitting water molecules
c)
chemiosmosis
d)
electron transfer in photosystem II and I
4.
Which of the following events occurs in the light reactions of photosynthesis?
a)
NADP+ is produced
b)
ATP is consumed to yield ADP
c)
carbon dioxide is fixed in organic molecules
d)
light is absorbed and funneled to reaction-center chlorophyll a
5.
Which of the following is directly associated with Photosystem I?
a)
harvesting light energy to make ATP
b)
receiving electrons from the thylakoid membrane ETC
c)
generation of molecular oxygen
d)
extraction of hydrogen electrons from the splitting of water
6.
In photosynthetic cells, synthesis of ATP by chemiosmosis occurs during
a)
photosynthesis only
b)
cellular respiration only
c)
both photosynthesis and cellular respiration
d)
photophosphorylation only
7.
What is the relationship between wavelength of light and the quantity of energy per photon?
a)
they have a direct, linear relationship
b)
they are inversely related
c)
they are logarithmically related
d)
they are only related in certain parts of the spectrum
8.
What is the primary function of the Calvin cycle?
a)
regenerate
ATP for use in the light reactions of photosynthesis
b)
produce carbon dioxide for use in the light
reactions of photosynthesis
c)
produce oxygen by oxidizing water
d)
produce simple sugars from carbon dioxide
9.
Where do the enzymatic reactions of the Calvin cycle take place?
a)
stroma of the chloroplast
b)
thylakoid membranes
c)
matrix of the mitochondria
d)
thylakoid space
10.
Reactions that consume CO2 take place in
a)
the light reactions of photosynthesis only
b)
the calvin cycle only
c)
the light reactions and the calvin cycle
d)
the calvin cycle and the citric acid cycle
11.
CAM plants keep stomata closed in daytime, thus reducing loss of water. They can do this because they
a)
fix CO2 into
organic acids during the night when temperatures are cooler.
b)
fix CO2 into by
combining it with RuBP in the Calvin cycle.
c)
obtain CO2 through their roots during the day.
d)
fix
CO2 into organic acids in the mesophyll cells,
which do not rely on stomata.
12.
Where do the light-dependent reactions occur?
a)
thylakoid membrane
b)
stroma
c)
mesophyll
d)
mitochondria
13.
Which of the following is NOT a product of the light reactions?
a)
ATP
b)
NADPH
c)
Oxygen
d)
Glucose
14.
What supplies the electrons that are lost in PS I?
a)
the electrons from PS II
b)
water
c)
glucose
d)
oxygen
15.
What is the function of NADP+?
a)
It absorbs light
b)
It is an electron carrier
c)
It is a light-reflecting pigment
d)
It acts as long-term energy storage
16.
What is the name of a pigment-containing complex found in a thylakoid?
a)
chlorophyll a
b)
photosystem
c)
grana
d)
stroma
17.
RuBisCO is the most abundant protein on the planet.
a)
True
b)
False
18.
At which location are electrons energized and added to NADP+ ?
a)
Photosystem 1
b)
Photosystem 2
c)
Calvin Cycle
d)
ATP Synthase
19.
Which pigment is most efficient at higher energy areas of the electromagnetic spectrum?
a)
Chlorophyll A
b)
Chlorophyll B
c)
Carotenoids
d)
No pigment is efficient at high energies
20.
Plants with the largest amount of which pigment will be best suited for growing conditions where light has a green hue.
a)
Chlorophyll A
b)
Chlorophyll B
c)
Carotenoids
d)
A combination of all 3
21.
During which phase of photosynthesis is O2 created?
a)
Light dependent reactions
b)
Calvin Cycle
c)
Citric Acid Cycle
d)
Glycolysis
22.
The enzyme responsible for Carbon Fixation in C3 Photosynthesis is
a)
RuBisCo
b)
PEP Carboxylase
c)
Hexokinase
d)
Pyruvate DeHydrogenase
23.
Which of the following molecules is not needed for the Calvin Cycle?
a)
CO2
b)
ATP
c)
NADPH
d)
H2O
24.
Since we're building a carbohydrate in the Calvin Cycle, is the process endergonic or exergonic and why?
a)
Endergonic because carbohydrate production is catabolic
b)
Exergonic because carbohydrate production is anabolic
c)
Endergonic because carbohydrate production is anabolic.
d)
Exergonic because carbohydrate production is catabolic
25.
If an aquatic plant is placed into a test tube with water near a light source, what will it produce?
a)
Glucose and Oxygen
b)
Carbon dioxide and ATP
c)
Water and Oxygen
d)
Glucose and ATP
26.
Where does carbon dioxide enter plants>
a)
The leaves
b)
Stomata
c)
Roots
d)
Stem
27.
Most plants appear green because chlorophyll
a)
absorbs green light.
b)
absorbs violet light.
c)
does not absorb green light.
d)
does not absorb violet light.
28.
Catabolic pathways
a)
Supply energy for cells
b)
Are endergonic
c)
Don't need enzymes
29.
First law of thermodynamics
a)
Entropy
b)
Action / Reaction
c)
Conservation of Energy
30.
Main cellular energy molecule
a)
ATP
b)
ADP
c)
cAMP
31.
Adding energy into a system
a)
Exergonic
b)
Endergonic
32.
Photosynthesis
a)
Endergonic
b)
Exergonic
33.
ATP + water reacts to form
a)
ADP + Pi and energy
b)
cAMP + Pi
c)
Glucose
34.
Which of the following is true for anabolic reactions?
a)
They are spontaneous and breakdown molecules.
b)
They are nonspontaneous and breakdown molecules.
c)
They are spontaneous and build molecules.
d)
They are nonspontaneous and build molecules.
35.
sum of all chemical reactions
a)
chemosynthesis
b)
cellular respiration
c)
metabolism
d)
photosynthesis
36.
What type of reaction is occurring in this graph?
a)
endergonic
b)
exergonic
c)
unable to determine
37.
Use the diagram to answer the question. Between which parts of the molecule must the bonds be broken to form an ADP molecule?
a)
A and B
b)
A and C
c)
B and C
d)
C and D
38.
Energy is released from ATP when
a)
a phosphate group is added
b)
adenine bonds to ribose
c)
ATP is exposed to sunlight
d)
a phosphate group is removed
39.
Where is the most easily accessible energy stored in an ATP molecule?
a)
between the 1st and 2nd phosphate groups
b)
between the adenine and ribose groups
c)
between the 2nd and 3rd phosphate groups
d)
between the ribose and the 1st phosphate groups
40.
Where does cellular respiration takes place?
a)
chloraplast
b)
nucleus
c)
mitochondria
41.
Anaerobiic respiration is breaking glucose down without...
a)
oxygen
b)
water
c)
carbon dioxide
d)
energy
42.
If oxygen is not present what process will occur in yeast cells?
a)
Alcoholic fermentation
b)
Respiration
c)
Photosynthesis
d)
Lactic acid fermentation
43.
Yeast can undergo respiration to produce carbon dioxide, but what other product does it make?
a)
lactic acid
b)
alcohol
c)
hydrogen
d)
water
44.
Where does glycolysis occur?
a)
Inner mitochondrial membrane
b)
Mitochondrial Matrix
c)
Cytosol
d)
At a ribosome
45.
Glycolysis is a _______ process
a)
Anabolic
b)
Catabolic
c)
Single Step
d)
Strictly Eukaryotic
46.
NADH is a ______ form of NAD+.
a)
Reduced
b)
Oxidized
c)
Catabolized
d)
Hydrolized
47.
How many ATP are gained through glycolysis?
a)
0
b)
2
c)
4
d)
30-38
48.
ATP hydrolysis is _________.
a)
Exergonic
b)
Endergonic
c)
Anabolic
d)
A condensation reaction
49.
Which molecule enters Kreb's Cycle?
a)
Pyruvate
b)
Glucose
c)
Acetyl CoA
d)
reducing powers
50.
What enzyme in the ETC is responsible for generating the ATP molecules?
a)
ATPase
b)
ATP synthase
c)
Hexokinase
d)
none of the above
51.
after strenuous exercise, a muscle cell would contain decreased amounts of ______ and increased amounts of ______ ____
a)
glucose ATP
b)
ATP glucose
c)
oxygen lactic acid
d)
lactic acid ATP
52.
the loss of hydrogen or electrons is known as
a)
dehydration
b)
hydrogenation
c)
reduction
d)
oxidation
53.
Which process takes place in the presence of oxygen and produces nearly 20 times as much as ATP as glycolysis alone?
a)
photosynthesis
b)
lactic acid fermentation
c)
aerobic respiration
d)
alcoholic fermentation
54.
Two different species of bacteria are examined. Scientists find that species X always produces CO2 and H2O during cellular respiration. Species Y always produces ethyl alcohol and CO2. Which conclusion can be made from these observations?
a)
Only species Y is aerobic.
b)
Only species Y is anaerobic
c)
Both species X and Y are aerobic.
d)
Both species X and Y are anaerobic.
55.
A weightlifter is using heavy weights in short bursts for a competition. Because his muscle cells are not able to take in enough oxygen to make very much ATP the weightlifter begins to get fatigue in his muscles. Which of the following processes is most likely going on in the muscles of the weightlifter as he competes in his event?
a)
As the cells run out of oxygen they switch to anaerobic respiration (fermentation), which allows the cell to make small amounts of ATP in the absence of oxygen.
b)
As the cells run out of oxygen, they die off gradually and the weightlifter's muscles have fewer contracting muscle cells.
c)
The cells will never run out of oxygen if the weightlifter is breathing.
d)
As the cells run out of oxygen, they will continue to make the same amount of ATP, since oxygen is not required to make ATP.
56.
What are the reactants in the equation for cellular respiration?
a)
oxygen and lactic acid
b)
carbon dioxide and water
c)
glucose and oxygen
d)
water and glucose
57.
Aerobic respiration produces how many ATP molecules
a)
2
b)
26
c)
36
d)
50
58.
When is Oxygen taken in by the cells?
a)
Kreb's Cycle
b)
Calvin Cycle
c)
ETC
59.
When is CO2 released?
a)
Kreb's Cycle
b)
Calvin Cycle
c)
ETC
60.
The number of ATP molecules produced out of Krebs Cycle is:
a)
2
b)
3
c)
4
d)
0
61.
Prior to entering the Krebs Cycle, each pyruvate molecule loses electrons, hydrogen ions, and a carbon, forming an energy-rich molecule of
a)
Acetyl-CoA
b)
Citrate
c)
Oxaloacetate
d)
Malate
62.
After the Krebs Cycle only a small portion of the energy of glucose has been converted to ATP. At this point the majority of usable energy is contained in
a)
NADH and FADH2
b)
Carbon Dioxide
c)
Acetyl-CoA
d)
Citrate
63.
ATP is formed from photosynthesis and cellular respiration
a)
true
b)
false
64.
In glycolysis, glucose is converted into two molecules of _____.
a)
citric acid
b)
oxaloacetic acid
c)
pyruvic acid
d)
Acetyl CoA
65.
In aerobic respiration, the 2 pyruvic acid have to be changed to Acetyl CoA to enter
a)
the citric acid cycle
b)
alcoholic fermentation
c)
lactic acid fermentation
d)
the ETC
66.
The oxygen consumed during cellular respiration is directly involved in
a)
glycolysis
b)
accepting e-and H+at the end of the ETC
c)
changing pyruvate to Acetyl CoA
d)
all of the others.
67.
During chemiosmosis
a)
H+ ions serve as the final electron acceptor
b)
a concentration gradient is generated when H+ ions are passively transported from the matrix to the intermembrane space of the mitochondrion
c)
energy is released as H+ ions move freely across the mitochondrial membrane
d)
ATP is synthesized when H+ ions move through a channel in ATP synthase
68.
The final electron acceptor of aerobic respiration is
a)
oxygen
b)
water
c)
carbon dioxide
d)
NAD+
69.
Which of the following is NOT produced during glycolysis?
a)
Oxygen
b)
NADH
c)
ATP
d)
Pyruvate
70.
Hydrogen ions move through a process called ______________________ down their concentration gradient.
a)
ATP synthesis
b)
Oxidation
c)
ETC
d)
Chemiosmosis
71.
How is a hydrogen ion gradient formed?
a)
energy from electrons moves hydrogen ions from the mitochondrial matrix to the intermembrane space
b)
hydrogen ions diffuse across the inner mitochondrial membrane from low to high concentration
c)
ATP is used to move hydrogen ions through hydrogen ion pumps
d)
it moves through NADH during glycolysis
72.
What is the main purpose of the hydrogen ion gradient?
a)
hydrogen ions move from high to low concentration, through ATP synthase, to drive the production of ATP
b)
hydrogen ions attach to to oxygen to produce water
c)
hydrogen ions bind to ADP to produce ATP
d)
hydrogen ions are used to produce carbon dioxide
73.
Where does the free energy come from that drives the ETC?
a)
ATP
b)
NADH and FADH2
c)
water
d)
carbon dioxide
74.
Which of the following is NOT true of the Kreb's cycle?
a)
glucose is broken down into pyruvate
b)
carbon dioxide is released as a byproduct
c)
NADH and FADH2 are produced
d)
pyruvate is broken down
75.
In the pea germination experiment, what would you expect to happen to the rate of cellular respiration as the temperature cools down?
a)
It will be unchanged because the metabolic processes are independent of temperature.
b)
It will speed up because enzymes work faster in cooler conditions.
c)
It will slow down because enzymes slow down in cooler conditions.
d)
It will speed up and then slow down as the enzymes run out of substrate.
76.
During fermentation,
a)
NAD⁺ is regenerated, allowing glycolysis to continue
b)
glucose is split into 3 pyruvic acid molecules
c)
oxygen is required
d)
carbon dioxide is produced.
77.
which of the following statements is correct about cellular respiration
a)
overall, it is a reduction reaction
b)
the citric acid cycle produces ATP by substrate level phosphorylation
c)
glycolysis uses pyruvate as a raw material
d)
oxidative phosphorylation occurs in cytoplasm
78.
Most of the ATP produced in cellular respiration comes from which of the following processes?
a)
substrate-level phosphorylation
b)
oxidative phosphorylation
c)
Kreb's Cycle
d)
Glycolysis
79.
During oxidative phosporylation, water is formed. Where do the oxygen atoms in the water come from?
a)
carbon dioxide
b)
glucose
c)
pyruvate
d)
molecular oxygen in the air
80.
Which of the following best describes the electron transport chain?
a)
hydrogen atoms are added to CO2 to make an energy rich compound
b)
electrons are passed from one carrier to another, releasing a little energy in each step
c)
glucose is broken down into a three-carbon compound in preparation for the citric acid cycle
d)
acetyl CoA is fully oxidized to CO2
81.
Which are the correct order from most potential energy to least potential energy
a)
Pyruvate, NADH, FADH2, ATP, Glucose, sucrose
b)
sucrose, glucose, pyruvate, NADH2, FADH2, ATP
c)
sucrose, glucose, pyruvate, FADH2, NADH2, ATP
d)
pyruvate, glucose, sucrose, NADH2, ATP, FADH2
82.
Which process is not correctly matched with the location where it occurs?
a)
glycolysis- cytosol
b)
transition stage- matrix
c)
kreb cycle- matrix
d)
oxidative phosphorylation- inter membrane space
83.
Where do the light reactions happen?
a)
mitochondria membrane
b)
thylakoid membrane
c)
stroma
d)
central vacuole
84.
Which of the following is NOT a product of the light-dependent reactions?
a)
ATP
b)
NADPH
c)
Oxygen
d)
Glucose
85.
What is the primary function of the light-dependent reactions of photosynthesis?
a)
To produce glucose
b)
To produce NADPH and ATP
c)
To use ATP
d)
To produce RuBP
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