Download chapter-5-quiz-solutions

BSC 2010 0M04 Quiz (Chapter 5) Solutions
*Disclaimer: I have made these problems to the best of my ability. However, this is only an
overview. Not all information/answers are guaranteed to be accurate, and this information may
or may not apply to your class exam. 
1. Which of the following does not have a specific polymer?
a. Carbohydrate
b. Lipid
c. Protein
d. Nucleic Acid
2. Which of the following terms describes each individual unit that can be joined together
to form a chain?
a. Monomer
b. Polymer
3. The monomer for Carbohydrates is referred to as a _____, and the polymer that
represents more than two sugars joined together is known as a ________.
a. Amino acids, polysaccharide
b. Monosaccharide, polysaccharide
c. Polypeptide, monosaccharide
d. Amino acid, nucleotide
4. Which of the following represents a proper ratio for Carbohydrates?
a. C4H8O4
b. C2H5O2
c. CHO2
d. CH2O
e. Both a and d
5. T or F: The proportion of Carbohydrates is about the same as the proportion of Nucleic
Acids across all different forms of life.
True. Proportions of different macromolecules are often the same across all life.
6. Carbohydrates with more than 4 carbons are happiest in which of the following
structures?
a. Ring
b. Linear
c. Branched
7. What functional group(s) are/is most commonly found in carbohydrates?
a. Hydroxyl
b. Carbonyl
c. Carboxyl
d. Sulfhydryl
e. Both a and b
f. All of the above
8. Which of the following refers to the process in which a water molecule is added to
separate monomers?
a. Dehydration Reaction
b. Glycosidic Linkage
c. Hydrolysis
d. Peptide Bond
9. Which of the following is not a correct statement regarding carbohydrates?
a. Cellulose aids in the cell wall structure in plants
b. Starch is used to store chemical energy in both plants and animals
c. Monosaccharides are joined together by glycosidic linkages
d. Two monosaccharides joined together is called a disaccharide
10. Which of the following is a type of polysaccharide that is extensively branched and
made by animals?
a. Glucose
b. Starch
c. Glycogen
d. Cellulose
e. Chitin
11. What kind of bond is responsible for joining fatty acids to glycerol in phospholipids and
fats?
a. Ester Linkage
b. Glycosidic Linkage
c. Peptide Bond
d. None of the above
12. What type of lipid is shown in the picture below?
a.
b.
c.
d.
Steroid
Unsaturated fat
Saturated fat
Phospholipid
13. What type of lipid is shown in the picture below?
a. Steroid
b. Unsaturated fat
c. Saturated fat
d. Phospholipid
14. What type of lipid is often found in a ring structure such as that of cholesterol?
a. Steroid
b. Unsaturated fat
c. Saturated fat
d. Phospholipid
15. The head of a phospholipid is ______ and the tail is ________.
a. Hydrophobic, Hydrophilic
b. Hydrophilic, Hydrophobic
c. Hydrophilic, Hydrophilic
d. Hydrophobic, Hydrophobic
16. T or F. Some types of lipids will mix with water due to being hydrophilic.
False. Lipids will always be hydrophobic. Some may have hydrophilic parts such as the
hydrophilic head of a phospholipid, but overall, it will be hydrophobic due to the
nonpolar, fatty acid tails.
17. T or F. A glycerol molecule is a hydrophilic molecule in which 3 carbon molecules each
have a hydroxyl group attached.
True! A picture of a glycerol molecule is attatched below.
18. An unsaturated fat will be _______ at room temperature.
a. Solid
b. Liquid
19. Which of the following isomers of an unsaturated fat is altered by hydrogenation to act
as a saturated fat by being solid at room temperature.
a. Cis Isomer
b. Trans Isomer
20. Which of the following is the monomer for proteins?
a. Nucleotides
b. Monosaccharide
c. Peptide
d. Amino Acids
21. Which of the following is not a function of proteins?
a. Support
b. Communication within the cell
c. Defense
d. Different kinds of transport
e. To act as a catalyst in chemical reactions
f. All of the above are functions of a protein
22. Which of the following is not a component of an amino acid?
a. Amino Group
b. R Group
c. A Group
d. Carboxyl
e. Hydrogen Atom
23. Which type of structure shows the linear chain of amino acids joined together by
covalent bonds?
a. Primary
b. Secondary
c. Tertiary
d. Quaternary
24. T or F. Denaturing describes the unravelling of proteins, however the proteins are still
functional.
False. Once a protein is denatured, it is no longer functional. There are many different
factors that can cause a protein to denature such as changes in pH and temperature.
25. What is the monomer for nucleic acids?
a. Nucleotides
b. Monosaccharide
c. DNA & RNA
d. Amino Acids
26. Deoxyribose and Ribose refers to the ______ in DNA and RNA.
a. Hydrogen Bonds
b. Phosphate Group
c. Pentose Sugar
d. Nitrogenous Base
27. What is the complimentary sequence to the DNA strand 3’ CAGGTACTG 5’
a. 3’ GTCCATGAC 5’
b. 3’ GTACGACTC 5’
c. 5’ GTCCATGAC 3’
d. 5’ CTCGTAGAC 3’
28. Which of the following nitrogenous bases will always pair with Guanine?
a. Adenine
b. Thymine
c. Cytosine
d. Uracil
29. If a DNA sample was composed of 40% Adenine, how much Guanine is present?
a. 40%
b. 60%
c. 20%
d. 10%
30. T or F. Phosphodiester bonds link the phosphate group and the sugar in a
polynucleotide molecule.
True!
*See below
Congratulations on making it through the practice quiz! I hope you did well  If you have any
questions at all on solutions or concepts, just come visit me in SI! My hours are attached below,
just make sure to have at least attempted the problems beforehand.