Download Homework 3 BSC 1005 Fall 2011

BSC 1005 Fall 2011 Homework 3!
Name:_______________________
Introduction to Life Science
BSC 1005
Fall 2011
Homework 3: Cellular Processes
Connect Due Date:____11/23/2011 11:59PM__________
Instructions
Complete this homework assignment as the material is covered in class. You may refer
to any of the course resources including the text, lecture notes, and Connect. In order
to receive credit for this homework assignment you must enter and submit your final
answers online through Connect before the due date.
Multiple Choice Portion
1.Organisms able to make their own food molecules from inorganic materials and sun
energy are
a. autotrophs.
b. aerobic.
c. anaerobic.
d. heterotrophs.
2.Chemosynthesis is
a. a form of photosynthesis.
b. a form of autotrophy.
c. a form of heterotrophy.
d. a form of respiration.
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BSC 1005 Fall 2011 Homework 3!
Name:_______________________
3.Aerobic cellular respiration differs from anaerobic cellular respiration in that
a. anaerobic cellular respiration only takes place in plants.
b. aerobic cellular respiration takes place in mitochondria.
c. anaerobic cellular respiration produces more ATP.
d. aerobic cellular respiration only uses glycolysis.
4.An anaerobic process does NOT require
a. water.
b. oxygen.
c. energy.
d. phosphate.
5.Aerobic cellular respiration requires the use of
a. N2.
b. O2.
c. H2.
d. H2O.
6.Aerobic cellular respiration takes place in
a. both plants and animals.
b. animals but not plants.
c. plants but not animals.
d. bacteria only.
7.A usable form of energy for all cell processes
a. C6H12O6.
b. Glyceraldehyde-3-phosphate.
c. ATP.
d. NADH2.
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BSC 1005 Fall 2011 Homework 3!
Name:_______________________
8.____ is NOT a stage of cellular respiration.
a. The Krebs cycle
b. Oxidative phosphorylation
c. The Calvin cycle
d. Glycolysis
9.The largest amount of energy is obtained from
a. the Krebs cycle.
b. glycolysis.
c. fermentation.
d. oxidative phosphorylation
10.The result of the complete breakdown of glucose during aerobic cellular respiration
in eukaryotic cells will yield a net gain of approximately
a. two ATP.
b. four ATP.
c. thirty-six ATP.
d. forty-two ATP.
11.Which of the following metabolic processes involves enzymes embedded in the inner
membrane of mitochondria?
a. glycolysis
b. Krebs cycle
c. electron transport system
d. All of these answers are correct.
12.ATP is produced by
a. the electron transport system.
b. The Krebs cycle.
c. glycolysis.
d. All of the choices are correct.
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BSC 1005 Fall 2011 Homework 3!
Name:_______________________
13.Hydrogens are combined with oxygen at the completion of
a. glycolysis.
b. fermentation.
c. the Krebs cycle.
d. the electron transport system.
14.Glycolysis takes place in the
a. mitochondria.
b. cytoplasm.
c. grana.
d. stroma.
15.The end product of glycolysis is
a. ketone.
b. alcohol.
c. pyruvic acid.
d. lactic acid.
16.During glycolysis, a six-carbon sugar is converted to
a. three two-carbon sugars.
b. glucose.
c. two three-carbon molecules.
d. a disaccharide.
17.The Krebs cycle requires
a. water.
b. acetyl-CoA.
c. oxygen.
d. carbon dioxide.
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BSC 1005 Fall 2011 Homework 3!
Name:_______________________
18.The Krebs cycle produces
a. carbon dioxide.
b. water.
c. acetyl.
d. CoA.
19.The first material to enter the Krebs cycle is
a. oxygen.
b. glucose.
c. acetyl-CoA.
d. citric acid.
20.____ is NOT a product of the Kreb cycle.
a. Pyruvic acid
b. ATP
c. NADH2 and FADH2
d. CO2
21.If no oxygen is present, the electron transport system
a. stops.
b. accelerates.
c. produces acids and alcohols.
d. obtains oxygen from available water.
22.In fermentation,
a. oxygen is reduced.
b. water is reduced.
c. organic molecules are reduced.
d. inorganic molecules are reduced.
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BSC 1005 Fall 2011 Homework 3!
Name:_______________________
23.Lactic acid is formed by combining
a. pyruvic acid and hydrogen.
b. CO2 and hydrogen.
c. alcohols and hydrogen.
d. pyruvic acid and oxygen.
24.In fermentation, yeast produces
a. alcohol.
b. oxygen.
c. hydrogen.
d. All of these answers are true.
25.All of the following molecules can be stored by cells of your body for later use except
a. carbohydrates.
b. fats.
c. proteins.
d. None of these molecules can be stored.
26.Fats are digested to form
a. amino acids and energy.
b. nucleic acids and energy.
c. fatty acids and glycerol.
d. simple sugars.
27.Complex carbohydrates are digested to
a. simple sugars.
b. amino acids.
c. proteins.
d. fatty acids.
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BSC 1005 Fall 2011 Homework 3!
Name:_______________________
28.The digestion of a protein results in
a. sugars.
b. enzymes.
c. amino acids.
d. the formation of peptide bonds.
29.Before fats can be metabolized in aerobic cellular respiration they must be converted
to
a. simple sugars.
b. fatty acids and glycerol.
c. amino acids.
d. fatty acids and amino acids.
30.Before an an amino acid can be used in cellular respiration it goes through this
process to remove nitrogen
a. beta oxidation.
b. pyruvate oxidation
c. deamination.
d. hydrolysis.
31.Glucose + NAD+ + ADP + P
represents
a. the Krebs cycle.
→
NADH + Pyruvic Acid + ATP. This formula
b. photosynthesis.
c. glycolysis.
d. the light-dependent reactions.
32.The following list of products is from which portion of aerobic cellular respiration?
8 NAD+ 32 ATP 4 FAD 12 H2O
a. glycolysis
b. Krebs cycle
c. electron transport system
d. fermentation
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BSC 1005 Fall 2011 Homework 3!
Name:_______________________
33.The following (C6 → 2 C3) best represents
a. glycolysis.
b. Krebs cycle.
c. electron transport system.
d. All of these choices are correct.
34.The following (C2 → CO2 + H+ + e-) represents
a. glycolysis.
b. Krebs cycle
c. electron transport system.
d. None of these choices is correct.
35.A correct equation for photosynthesis is
a. SUN + 6O2 + 6CO2 → C6H12O6 + 6H2O.
b. SUN + C6H12O6 + 6O2 → 6CO2 + 6H2O.
c. SUN + 6CO2 + 6H2O → C6H12O6 + 6O2.
d. SUN + 6CO2 → 6H2O + C6H12O6 + 6O2.
36.The process of photosynthesis requires the raw materials
a. O2 and H2O.
b. CO2 and H2O.
c. sugar and CO2.
d. H2O and sugar.
37.Energy gathering or concentrating mechanisms that allow light to be collected more
efficiently during photosynthesis are called
a. mitochondria.
b. photosystems.
c. light-independent reactions.
d. ribulose.
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BSC 1005 Fall 2011 Homework 3!
Name:_______________________
38.The molecule that traps the sun's energy is
a. ATP.
b. glyceraldehyde-3-phosphate.
c. chloroplast.
d. chlorophyll.
39.Which wavelengths of light are most likely to be absorbed by chlorophyll a?
a. UV
b. green
c. red
d. infrared
40.Keeping a plant under green light will
a. increase the rate of photosynthesis.
b. decrease the rate of photosynthesis.
c. stimulate the production of more chlorophyll.
d. cause it to produce flowers.
41.____ take(s) place within the grana.
a. The light-dependent reactions
b. The light-independent reactions
c. The entire photosynthesis process
d. Aerobic cellular respiration
42.Reaction centers are located in the
a. grana.
b. thylakoid.
c. antenna complex.
d. All of the choices are correct.
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BSC 1005 Fall 2011 Homework 3!
Name:_______________________
43.The ATP and NADPH produced in the light-dependent reaction stage
a. become reactants for cellular respiration.
b. are waste products that the plant eliminates.
c. become the raw materials for the light-independent reaction stage.
d. are the end products of photosynthesis.
44.The light-independent reactions of photosynthesis (Calvin cycle) take place in the
a. thylakoids.
b. cytoplasm.
c. grana.
d. stroma.
45.Two products of the light-dependent reactions, which become reactants for the lightindependent reactions, are
a. ATP and NADP.
b. CO2 and H2O.
c. O2 and ATP.
d. ATP and NADPH2.
46.O2 is a product of the
a. light-dependent reactions.
b. light-independent reactions.
c. light-capturing events
d. All of the choices are correct.
47.Proton pumps are used in photosynthesis
a. to pump protons into the thylakoid.
b. between photosystem II and photosystem I.
c. during the light-dependent reaction sequence.
d. All of the choices are correct.
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BSC 1005 Fall 2011 Homework 3!
Name:_______________________
48.Glyceraldehyde-3-phosphate is an end product of
a. light-dependent reactions.
b. light-independent reactions.
c. glycolysis.
d. the electron transport system.
49.The production of ATP occurs
a. as hydrogen ions move across membranes.
b. in chloroplasts.
c. in mitochondria.
d. in all of the choices listed.
50.Almost 80% of this molecule is used to regenerate ribulose so that photosynthesis
can continue. The remaining 20% is used by the plant to make other organic molecules.
a. pyruvic acid
b. acetyl CoA
c. glyceraldehyde-3-phosphate
d. glucose
51.Water molecules are a reactant for
a. the electron transport system.
b. the light-independent reactions.
c. the light-dependent reactions.
d. glycolysis.
52.Carbon fixation begins with carbon dioxide combining with a 5-carbon molecule,
a. glucose.
b. ribulose.
c. NADP+
d. glyceraldehyde-3-phosphate.
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BSC 1005 Fall 2011 Homework 3!
Name:_______________________
53.The oxygen produced by a plant comes most directly from
a. CO2.
b. H2O.
c. C6H12O6.
d. glyceraldehyde-3-phosphate.
54.Which of the following tests would be the best for determining if a cell were carrying
on photosynthesis?
a. Does the cell contain water?
b. Does the cell produce carbon dioxide?
c. Does the cell release oxygen?
d. Does the cell require oxygen to stay alive?
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