Chemistry of Life Practice Test - Weebly

This is intended to give you PRACTICE working with the material you will be tested on.

ID: A

Chemistry of Life Practice Test

Multiple Choice Identify the choice that best completes the statement or answers the question.

1. Which of the following is NOT a common element found in organic molecules (macromolecules)?

A) C B) H C) O D) N E) Na

2. Which of the following is NOT a monomer?

A) a monosaccharide B) an amino acid C) a nucleotide D) a protein

Your lab was presented with 3 samples of food to evaluate for nutritional data. The results are given in the table below. Use this data to answer questions

3. Which sample(s) contain lipid?

A) Sample A and Sample B B) Sample B only C) Sample A and Sample C D) none of the samples contain lipids

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ID: A

The following questions are based on the 15 molecules illustrated below. Each molecule may be used once, more than once, or not at all.

4. Which of the following molecules are structural isomers?

A) 1 and 4 B) 5 and 14 C) 6 and 12 D) 12 and 13 E) 14 and 15

5. Which of the following molecules is (are) a polysaccharide?

A) 1 and 4 B) 6 C) 12 D) 14 E) all of the above

6. Which of the following molecules is a saturated fatty acid?

A) 1 B) 5 C) 6 D) 8 E) 9

7. Which of the following molecules act as building blocks (monomers) of polypeptides?

A) 1, and 6 B) 2, and 8 C) 7, and 13

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ID: A

8. Which of the following molecules consists of a hydrophilic "head" region and a hydrophobic "tail" region (a

phospholipid)? A) 2 B) 5 C) 7 D) 9

9. Polar molecules such as water have

A) no negative or positive poles. B) both negative and positive poles. C) only a negative pole. D) only a positive pole.

10. Lipids are not soluble in water because they are

A) hydrophobic and polar B) hydrophilic and polar C) hydrophobic and non-polar D) hydrophilic and non-polar

11. Which type of nutrient is NOT a source of energy?

A) proteins B) carbohydrates C) water D) fats

12. A good source of complex carbohydrates is

A) fruit. B) honey. C) beans. D) eggs.

Completion Complete each statement.

13. The name of an enzyme usually ends in ____________________.

14. The formation of polymers from monomers occurs as a result of ____________________ reactions, and the

breakdown of polymers into monomers occurs as a result of ____________________ reactions.

Match the monomers with their polymers A) Carbohydrate B) Lipid

15. Monosaccharide 16. Nucleotide

17. Fatty Acid

18. Amino Acid

Use the options below. A) Carbohydrates B) Nucleic Acids

19. Amino Acids

20. Sugar

21. Starch

C) Protein D) Nucleic Acid

C) Proteins D) Lipids

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22. Enzyme 23. Phospholipid 24. Steroid 25. Nucleotide 26. DNA 27. Glucose 28. A, T, G, C 29. RNA 30. Fructose 31. Monosaccharide 32. Polysaccharide 33. Fatty Acid 34. Triglycerides 35. Saturated 36. Fat 37. Dehydration Synthesis 38. Amylase 39. Unsaturated 40. Hydrolysis 41. Oil 42. 4 calories per gram 43. 9 calories per gram 44. Genetic Information

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ID: A

Study this material. Problem

45.

ID: A

Refer to the illustration above. The graph depicts the relative energy levels of the products and reactants for the following chemical reaction: A + B ?? C + D. Write your answers to the following in the spaces below. a. Which substances, A, B, C, and/or D, are present at point 1 on the graph? b. Which substances, A, B, C, and/or D, are present at point 3 on the graph? c. Why is point 2 at a higher energy level than point 1? d. Draw a dashed line on the graph indicating how the energy level of this reaction over time would be different

if the enzyme that catalyzes the reaction were not present.

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Chemistry of Life Practice Test Answer Section

MULTIPLE CHOICE

1. ANS: E

PTS: 1

DIF: 1

OBJ: 3-1.1

STA: B2.2a

2. ANS: D

PTS: 1

DIF: L2

REF: p. 45

OBJ: 2.3.1

NAT: B.2 | C.1.c | C.2.a

STA: III.2.HS.3

KEY: analysis

3. ANS: A

PTS: 1

4. ANS: A

PTS: 1

TOP: Concept 5.2

5. ANS: E

PTS: 1

TOP: Concept 5.2

6. ANS: E

PTS: 1

TOP: Concept 5.3

7. ANS: B

PTS: 1

TOP: Concept 5.4

8. ANS: B

PTS: 1

TOP: Concept 5.3

9. ANS: B

PTS: 1

DIF: 1

OBJ: 2-3.1

10. ANS: C

PTS: 1

DIF: 1

OBJ: 3-2.4

STA: III.1.1

11. ANS: C

PTS: 1

DIF: Bloom's Taxonomy Level: 2

NAT: N.H.S.1.12.1

12. ANS: C

PTS: 1

DIF: Bloom's Taxonomy Level: 2

NAT: N.H.S.1.12.1

COMPLETION

13. ANS: -ase

PTS: 1

DIF: L3

NAT: B.3 | B.5 | C.1.b

14. ANS: condensation, hydrolysis

PTS: 1

DIF: 1

REF: p. 52

OBJ: 2.4.3

KEY: evaluation

OBJ: 3-1.4

STA: III.1.1

MATCHING

15. ANS: A 16. ANS: D 17. ANS: B 18. ANS: C

19. ANS: C 20. ANS: A 21. ANS: A

PTS: 1 PTS: 1 PTS: 1 PTS: 1

PTS: 1 PTS: 1 PTS: 1

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ID: A

ID: A

22. ANS: C 23. ANS: D 24. ANS: D 25. ANS: B 26. ANS: B 27. ANS: A 28. ANS: B 29. ANS: B 30. ANS: A 31. ANS: A 32. ANS: A 33. ANS: D 34. ANS: D 35. ANS: D 36. ANS: D 37. ANS: A 38. ANS: C 39. ANS: D 40. ANS: A 41. ANS: D 42. ANS: A 43. ANS: D 44. ANS: B

PTS: 1 PTS: 1 PTS: 1 PTS: 1 PTS: 1 PTS: 1 PTS: 1 PTS: 1 PTS: 1 PTS: 1 PTS: 1 PTS: 1 PTS: 1 PTS: 1 PTS: 1 PTS: 1 PTS: 1 PTS: 1 PTS: 1 PTS: 1 PTS: 1 PTS: 1 PTS: 1

PROBLEM

45. ANS:

a. A and B b. C and D c. An input of energy, called the activation energy, is required in order to get the reaction going. d The graph should be the same except that the energy level at point 2 should be higher.

PTS: 1

DIF: 3

OBJ: 2-2.2

STA: B2.1a

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