WorksheetsHonors Unit 4
Total questions: 50
Worksheet time: 4hrs 58mins
Name
Class
Date
1.
Glucose is broken down during which process
a)
Krebs cycle
b)
Calvin cycle
c)
Glycolysis
d)
Photosynthesis
2.
Where does glycolysis occur?
a)
Inner mitochondrial membrane
b)
Mitochondrial Matrix
c)
Cytosol
d)
At a ribosome
3.
Which molecule enters Kreb's Cycle?
a)
Pyruvate
b)
Glucose
c)
Acetyl CoA
d)
reducing powers
4.
Where does ETC occur?
a)
Mitochondrial matrix
b)
Outer mitochondrial membrane
c)
Inner mitochondrial membrane
d)
Cytosol
5.
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.
6.
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.
7.
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
8.
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
9.
In glycolysis, glucose is converted into two molecules of _____.
a)
citric acid
b)
oxaloacetic acid
c)
pyruvic acid
d)
Acetyl CoA
10.
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
11.
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.
12.
Which of the following statements are false?
a)
Glycolysis can occur with or without oxygen
b)
Glycolysis is the first step in both anaerobic and aerobic respiration
c)
Glycolysis occurs in the mitochondria
d)
Glycolysis produces 2 ATP, 2 Pyruvates, and 2 NADH
13.
Which of these molecules is released during the Kreb's cycle
a)
nitrogen
b)
oxygen
c)
hydrogen sulfide
d)
Carbon Dioxide (CO2)
14.
How does the amount of energy resulting from fermentation compare with that of aerobic respiration?
a)
Aerobic respiration results in less energy.
b)
Aerobic respiration results in more energy.
c)
Each process results in equal amounts of energy.
d)
Each process results in variable amounts of energy.
15.
The inner membrane of this organelle is highly folded. What is the advantage of this folding?
a)
It increases the amount of light absorbed by the organelle.
b)
It increases the structural support of the organelle.
c)
It increases the surface area, allowing greater ATP production.
d)
It increases the surface area and the rate of glucose production.
16.
Muscle cells that are used during heavy exercise often do not receive enough oxygen for energy production. What waste product builds up in muscle cells resulting in soreness?
a)
water
b)
alcohol
c)
carbon dioxide
d)
lactic acid
17.
Which step of cellular respiration makes the most ATP?
a)
Glycolysis
b)
Krebs Cycle
c)
Electron Transport Chain
d)
Light Dependent Reactions
18.
The enzyme that uses the hydrogen ion gradient to produce ATP is called
a)
ligase
b)
DNA polymerase
c)
citric acid
d)
ATP synthase
19.
The final electron acceptor of aerobic respiration is
a)
oxygen
b)
water
c)
carbon dioxide
d)
NAD+
20.
Which of the following is NOT produced during glycolysis?
a)
Oxygen
b)
NADH
c)
ATP
d)
Pyruvate
21.
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
22.
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
23.
Cellular respiration is called an aerobic process because it requires
a)
light
b)
excercise
c)
oxygen
d)
glucose
24.
The two main types of fermentation are called
a)
alcoholic and aerobic
b)
aerobic and anaerobic
c)
alcoholic and lactic acid
d)
lactic acid and anaerobic
25.
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.
26.
Breathing heavily after running a race is your body's way of
a)
making more citric acid
b)
repaying an oxygen debt
c)
restarting glycolysis
d)
stopping the ETC
27.
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
28.
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
29.
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
30.
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
31.
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
32.
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
33.
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.
34.
Where do the light-dependent reactions occur?
a)
thylakoid membrane
b)
stroma
c)
mesophyll
d)
mitochondria
35.
What supplies the electrons that are lost in PS I?
a)
the electrons from PS II
b)
water
c)
glucose
d)
oxygen
36.
RuBisCO is the most abundant protein on the planet.
a)
True
b)
False
37.
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
38.
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
39.
Which of the following molecules is not needed for the Calvin Cycle?
a)
CO2
b)
ATP
c)
NADPH
d)
H2O
40.
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
41.
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
42.
Where does carbon dioxide enter plants>
a)
The leaves
b)
Stomata
c)
Roots
d)
Stem
43.
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.
44.
Which of the following is the correct equation for PHOTOSYNTHESIS?
a)
6CO2 + 6H2O --> 6O2 + C6H12O6
b)
6CO2 + C6H12O6 + 6H2O --> O2
c)
6O2 + 6H2O --> 6CO2 + C6H12O6
d)
C6H12O6 + 6O2 ---> 6H2O + 6CO2
45.
What is the correct equation for cellular respiration?
a)
6O2 + C6H12O6 -> 6CO2 + 6H2O + Energy
b)
6O2 + C6H12O6 + Energy -> 6CO2 + 6H2O
c)
6CO2 + 6H2O -> 6O2 + C6H12O6 + Energy
d)
6CO2 + 6H2O + Energy -> 6O2 + C6H12O6
46.
What type of respiration requires oxygen?
a)
Aerobic
b)
Anaerobic
47.
What is the process by which light energy is converted into chemical energy?
a)
Cellular respiration
b)
Calvin Cycle
c)
Photosynthesis
d)
Krebs Cycle
48.
Where does the Calvin Cycle (Dark Rxn) occur?
a)
thylakoid
b)
stroma
c)
lumen
d)
mitochondria
49.
Glycolysis results in the NET gain of:
a)
2 ATP, 2 pyruvate
b)
4 ATP
c)
4 NADH
d)
2 Acetyl CoA
50.
What happens when the bonds of ATP are broken?
a)
Energy is released
b)
Energy Is absorbed
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