Science, Grade 12 University Name: _______________________SBI 4U UNIT 1 TEST: Date: ________________________

METABOLIC PROCESSES

KNOWLEDGE / UNDERSTANDING

COMMUNICATION THINKING / INQUIRY APPLICATION

/38 /11 /5 /6 PART A: Multiple Choice / 25 marks (K/U)

Write the CAPTIAL letter of the correct response in the space provided. Each question is worth 1 mark.

1. _____ 5. _____ 9. _____ 13. _____ 17. _____ 21. _____ 25. _____2. _____ 6. _____ 10. _____ 14. _____ 18. _____ 22. _____3. _____ 7. _____ 11. _____ 15. _____ 19. _____ 23. _____4. _____ 8. _____ 12. _____ 16. _____ 20. _____ 24. _____PART B: Matching / 13 marks (K/U)

Match each term in Column B to its definition in Column A by placing the correct letter in the space provided. Each term in Column B can only be used once. (There are some terms that will not be used at all)

Column A Column B_____ 1. FADH2 FADH + H+

_____ 2. reaction involving the absorption of free energy_____ 3. Glucose + Fructose Sucose + Water_____ 4. Lactose + Water Glucose + Galactose_____ 5. O2 + 4H+ + 4e- 2H20_____ 6. ability of an atom to attract an electron_____ 7. protein that acts as a catalyst_____ 8. substance made of repeating chemical units_____ 9. same chemical formula but different arrangement of

atoms_____ 10. solution which resists changes in pH_____ 11. any substance that donates hydrogen ions in a

solution

A. dehydration synthesisB. oxidation reactionC. polymerD. reduction reactionE. enzymeF. hydrolysis reactionG. electronegativityI. ionization energyJ. isomerK. exergonic reactionL. endergonic reactionM. bufferN. acid

_____ 12. molecules which tend to be water loving_____ 13. reaction involving a release of free energy

O. baseP. hydrophilicQ. hydrophobic

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PART C: Functional Group Identification / 6 marks (COM)

Circle and name three different functional groups within the given molecule.

PART D: Short Answer / 5 marks (COM)

Answer questions 1 to 3 using the above graph.

1. Explain what the large peak in the graph means. (2 marks)____________________________________________________________________________________________________________________________________________________________

violet blue green yellow orange

2. What colours of light are being reflected? (2 marks) ______________________________________

3. What is the name of the pigment molecule that reflects this colour? (1 mark) ____________________

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PART C: Functional Group Identification / 6 marks (COM)Circle and name three different functional groups within the given molecule.

PART D: Short Answer / 5 marks (COM)

Answer questions 1 to 3 using the above graph.

1. Explain what the two large peaks in the graph mean. (2 marks)____________________________________________________________________________________________________________________________________________________________

2. What colours of light are being reflected? (2 marks) ______________________________________

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3. What is the name of the pigment molecule that reflects this colour? (1 mark) ____________________

PART E: Short Answer / 6 marks (APP)

1. Describe a commercial application of alcoholic fermentation. (3 marks)___________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

2. In the spring and summer, most leaves appear green. Explain why leaves change colour in the fall? (3 marks)___________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

PART F: Short Answer / 5 marks (T/ I)

1. If you isolate mitochondria and place them in buffer with a low pH they begin to manufacture ATP. Explain why this occurs? (2 marks)

____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

2. Leigh’s disease is a rare inherited neurometabolic disorder characterized by degeneration of the central nervous system. Leigh’s disease can be caused by mutations in mtDNA or by deficiencies in the enzyme called pyruvate dehydrogenase. Explain how a deficiency in pyruvate dehydrogenase could affect metabolism. (3 marks)

_____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

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PART E: Short Answer / 6 marks (APP)1. Describe a commercial application of alcoholic fermentation. (3 marks)___________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

2. Chromatography can be used to test for performance enhancing drugs in athletes. Explain the general principle behind chromatography. (3 marks)

___________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

PART F: Short Answer / 5 marks (T/ I)1. Trematol is a metabolic poison derived from the white snakeroot. Cows

eating this plant concentrate the poison in their milk. The poison inhibits liver enzymes that convert lactic acid to other compounds for metabolism. Why does physical exertion increase symptoms of poisoning by trematol? Why does the pH of the blood decrease in a person who has digested trematol? (2 marks)

____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

2. In type I diabetes, the body does not produce insulin, a hormone that enables glucose to exit the bloodstream and enter muscle and adipose tissue. As a result, type I diabetes require daily insulin injections. Explain what would happen if a type I diabetic stopped taking their insulin. (3 marks)

________________________________________________________________________________________________________________________________________

____________________________________________________________________________________________________________________________________________________________________________________________________________

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SBI 4U UNIT 1: METABOLIC PROCESSES MULTIPLE CHOICE

1. Covalent bonds are:(A)A type of intramolecular force of attraction(B)A type of intermolecular force of attraction(C)Weaker than ionic bonds(D)B and C only

2. Water:(A)Is highly polar(B)Cannot dissociate ionic compounds(C)Is asymmetrical(D)A and C

3. The molecule CH3CHO is an example of: (A)A ketone(B)An aldehyde(C)A carboxylic acid(D)An alcohol

4 The molecule below contains the following functional group:

(A)hydroxyl(B)carboxyl(C)carbonyl(D)amino

5. The structural formula for carbohydrates is:(A)[C2HO2]n(B)[CH4O]n(C)[CH2O]n(D)[CHO2]n

6. Two polymers used in energy storage are:(A)Starch and cellulose(B)Glycogen and cellulose(C)Glycogen and starch(D)Glucose and cellulose

7. Lipids are used for:(A)Energy storage(B)Building cell membranes(C)Communication(D)All of the above

8. All proteins must contain the following atoms:(A)C, H, O and N(B)Only C, H and O(C)C, H, O , N and S (D)Only C and H

9. The linkage between amino acids is called:(A)Glycosidic bond(B)Peptide bond(C)Ester bond(D)Ether bond

10. The primary structure of a protein refers to the:(A)Sequence of amino acids(B)Hydrogen bonding between the amino acids (causing an alpha

helix or beta pleated sheets)(C)Interaction between R groups within the polypeptide(D)Interaction between 2 or more polypeptides

11. The following nucleotides base pair with one another:(A)A-C and G-U(B)A-C and T-G(C)A-T and G-C(D)A-U and T-G

12. Enzymes are catalyst which:(A)Increase the activation of reactions(B)Decrease the activation energy of reactions(C)Speed up endergonic and exergonic reactions(D)A and C

13. The products of cellular respiration are:(A)Glucose and oxygen(B)Carbon dioxide, water and energy(C)Glucose and water(D)Carbon dioxide and energy

14. The process of cellular respiration occurs:(A)Only in the cytoplasm(B)Only in the mitochondria(C)In both the cytoplasm and mitochondria(D)None of the above

15. Oxidative phosphorylation:(A)Forms ATP directly(B)Forms ATP indirectly(C)Involves a series of redox reactions(D)B and C

16. The reaction: NAD+ NADH + H+ is an example of:(A)A phosphorylation reaction(B)An oxidation reaction(C)A reduction reaction(D)Isomerization

17. One NADH and one FADH2 molecule are responsible for producing the following number of ATP:

(A)2, 3(B)3, 2(C)2, 2(D)3, 3

18. Three glucose molecules would produce ____ pyruvate molecules and ____ acetyl CoA molecules:

(A)2, 2(B)4, 4(C)6, 6(D)8, 8

19. How many turns of the Krebs cycle are required to metabolize 2 glucose molecules?

(A)1(B)2(C)3(D)4

20. The final electron acceptor in the mitochondrial electron transport chain is:

(A)Oxygen(B)Water(C)Carbon dioxide(D)Hydrogen

21. Carotenoids are ________ and _________ coloured pigments:(A)Blue and violet(B)Red and green(C)Yellow and orange(D)green and yellow

22. Photosystems contain:(A)Chlorophyll(B)Accessory pigments(C)Proteins

(D)All of the above

23. In eukaryotes, light dependent reactions produce:(A)ATP and NADPH(B)Only ATP(C)Only NADPH(D)None of the above

24. Light independent reactions take place in the:(A)Thylakoid membrane(B)Mitochondria(C)Stroma(D)cytoplasm

25. In the Calvin cycle, _____ carbon dioxide molecules are required to produce 1 glucose molecule:

(A)1(B)3(C)6(D) 9

SBI 4U UNIT 1: METABOLIC PROCESSES

MULTIPLE CHOICE

1. Ionic bonds are:(A)A type of intramolecular force of attraction(B)A type of intermolecular force of attraction(C)Stronger than covalent bonds(D)B and C only

2. Water:(A)Is highly nonpolar(B)Can dissociate ionic compounds(C)Contains ionic bonds(D)Is symmetrical

3. The molecule CH3CH2COOH is an example of:(A)Ketone(B)aldehyde(C)carboxylic acid(D)alcohol

4. The molecule below contains the following functional group:

(A)hydroxyl(B)carboxyl(C)carbonyl(D)amino

5. Select the group of monosaccharides:(A)Glucose, fructose, sucrose(B)Glucose, fructose, galactose(C)Glucose, maltose, sucrose(D)Fructose, galactose, lactose

6. The carbohydrate used in energy storage for animals is:(A)Starch(B)Cellulose(C)Glucose(D)Glycogen

7. Lipids are used for:(A)Energy storage(B)Building cell membranes(C)Communication(D)All of the above

8. All proteins must contain the following functional groups:(A)Carboxyl and alcohol(B)Carboxyl and amino(C)Carbonyl and amino(D)Carbonyl and phosphate

9. The building blocks for proteins are:(A)Amino acids(B)Peptides(C)Polypeptides(D)Glycerol and fatty acids

10. The secondary structure of a protein refers to the:(A)Sequence of amino acids(B)Hydrogen bonding between the amino acids (causing an alpha

helix or beta pleated sheets)(C)Interaction between R groups within the polypeptide(D)Interaction between 2 or more polypeptides

11. A nucleotide consists of:(A)A nitrogenous base, a ribose sugar and 3 phosphate groups(B)only a nitrogenous base and a phosphate group(C)a nitrogenous base, a ribose sugar and a phosphate group(D)only a ribose sugar and a phosphate group

12. Enzymes:(A)Decrease the potential energy of transition state molecules(B)Slow down exergonic and endergonic reactions(C)increase activation energy(D)All of the above

13. The reactants in cellular respiration are:(A)Glucose and water(B)Carbon dioxide, water and energy(C)Glucose and oxygen(D)Carbon dioxide and water

14. The process of cellular respiration occurs:(A)In the mitochondria and chloroplasts(B)Only in the mitochondria(C)In the mitochondria and cytoplasm(D)Only in the chloroplast

15. Substrate level phosphorylation:(A)Forms ATP directly(B)Forms ATP indirectly(C)Involves the transfer of a phosphate group(D)A and C

16. The reaction: NADH + H+ NAD+ is an example of:

(A)A phosphorylation reaction(B)An oxidation reaction(C)A reduction reaction(D)Isomerization

17. One NADH and one FADH2 molecule are responsible for producing the following number of ATP:

(A)2, 3(B)3, 2(C)2, 2(D)3, 3

18. Two glucose molecules would produce ____ pyruvate molecules and ____ acetyl CoA molecules:

(A)1, 1(B)2, 2(C)3, 3(D)4, 4

19. How many turns of the Krebs cycle are required to metabolize 3 glucose molecules?

(A)2(B)3(C)6(D)9

20. The final electron acceptor in the mitochondrial electron transport chain is:

(A)Oxygen(B)Water(C)Carbon dioxide(D)hydrogen

21. Chlorophyll is a ________ coloured pigment:(A)violet(B)Blue(C)Green(D)red

22. In non-cyclic photophosphorylation:(A)Electrons return to the same photosystem(B)Electrons are passed along to make NADPH(C)ATP is made within the thylakoid lumen(D)B and C

23. Light dependent reactions take place in the:(A)Stroma(B)Stromal lamellae(C)thylakoid membrane(D)cytoplasm

24. Light independent reactions convert:(A)Carbon dioxide into water(B)sugars into carbon dioxide(C)Carbon dioxide into sugars(D)Sugars into water

25. The Calvin cycle requires _____ turns of the cycle to produce 1 glucose molecule:

(A)1(B)3(C)6(D)9