Bio 140 Exam One Worksheet
Chapters 1, 2, 3, and 6
Multiple Choice/fill in the blank:
1. What is the difference between the sugar in DNA and RNA?
a. DNA contains deoxyribose which lacks a 3’ OH group
b. DNA contains ribose which lacks a 2’ OH group
c. RNA contains ribose which lacks an 2’ OH group
d. DNA contains deoxyribose which lacks a 2’ OH group
2. The _________ monomers of this macromolecule are held together by __________
bonds.
a. Monosaccharide; glycosidic
b. Nucleotide; glycosidic
c. Amino acid; phosphodiester
d. Monosaccharide; peptide
3. When two atoms are equally
electronegative, they will interact to form
a. Hydrogen bonds
b. Polar covalent bonds
c. Nonpolar covalent bonds
d. Ionic bonds
4. In eukaryotes, a mature mRNA transcript does not contain
a. 5’ cap
b. Introns
c. Poly-A tail
d. Exons
5. _____ hydrogen bonds form between Guanine and ________________; _____ hydrogen
bonds form between ______________ and Thymine.
6. double stranded DNA has 10% Guanine, what percent Adenine would be expected?
a. 90%
b. 10%
c. 80%
d. 40%
7. How will water interact with a negatively charged ion (anion)?
, a. The partially positive hydrogen atoms will interact with the anion
b. The partially positive oxygen atoms will interact with the anion
c. The partially negative oxygen atoms will interact with the anion
d. Water does not interact with charged molecules because they are hydrophobic
8. Determine the mRNA sequence that would be transcribed from the following
non-template strand of DNA: 5’-AATCGTACCGTA-3’
9. What are the building blocks of proteins?
a. Nucleic acids
b. Amino acids
c. Fatty acids
d. Sugars
10. When a protein begins to polymerize (form a polymer) ______ bonds are formed
between the _____ group and the _______ group of the building blocks.
11. There are 100 times more protons in a solution of pH 5 than a solution of pH 3.
a. True
b. False
12. Which of the following building blocks do not require energy to form its polymer?
a. Lipids
b. Carbohydrates
c. Nucleic acids
d. Amino acids
13. Which two parts of a nucleic acid are responsible for forming the backbone of DNA and
RNA? What is the bond called?
a. Sugar and Base; glycosidic linkage
b. Base and phosphate group; phosphodiester bond
c. Base and sugar; peptide bond
d. Base and sugar; phosphodiester bond
14. Sugars spend most of their time in a ring structure.
a. True
b. False
Chapters 1, 2, 3, and 6
Multiple Choice/fill in the blank:
1. What is the difference between the sugar in DNA and RNA?
a. DNA contains deoxyribose which lacks a 3’ OH group
b. DNA contains ribose which lacks a 2’ OH group
c. RNA contains ribose which lacks an 2’ OH group
d. DNA contains deoxyribose which lacks a 2’ OH group
2. The _________ monomers of this macromolecule are held together by __________
bonds.
a. Monosaccharide; glycosidic
b. Nucleotide; glycosidic
c. Amino acid; phosphodiester
d. Monosaccharide; peptide
3. When two atoms are equally
electronegative, they will interact to form
a. Hydrogen bonds
b. Polar covalent bonds
c. Nonpolar covalent bonds
d. Ionic bonds
4. In eukaryotes, a mature mRNA transcript does not contain
a. 5’ cap
b. Introns
c. Poly-A tail
d. Exons
5. _____ hydrogen bonds form between Guanine and ________________; _____ hydrogen
bonds form between ______________ and Thymine.
6. double stranded DNA has 10% Guanine, what percent Adenine would be expected?
a. 90%
b. 10%
c. 80%
d. 40%
7. How will water interact with a negatively charged ion (anion)?
, a. The partially positive hydrogen atoms will interact with the anion
b. The partially positive oxygen atoms will interact with the anion
c. The partially negative oxygen atoms will interact with the anion
d. Water does not interact with charged molecules because they are hydrophobic
8. Determine the mRNA sequence that would be transcribed from the following
non-template strand of DNA: 5’-AATCGTACCGTA-3’
9. What are the building blocks of proteins?
a. Nucleic acids
b. Amino acids
c. Fatty acids
d. Sugars
10. When a protein begins to polymerize (form a polymer) ______ bonds are formed
between the _____ group and the _______ group of the building blocks.
11. There are 100 times more protons in a solution of pH 5 than a solution of pH 3.
a. True
b. False
12. Which of the following building blocks do not require energy to form its polymer?
a. Lipids
b. Carbohydrates
c. Nucleic acids
d. Amino acids
13. Which two parts of a nucleic acid are responsible for forming the backbone of DNA and
RNA? What is the bond called?
a. Sugar and Base; glycosidic linkage
b. Base and phosphate group; phosphodiester bond
c. Base and sugar; peptide bond
d. Base and sugar; phosphodiester bond
14. Sugars spend most of their time in a ring structure.
a. True
b. False
