PHA 3568 Biochem Quiz Questions
1. What is the total ribosome size used in a eukaryotic cell?
A) 100S
B) 70S
C) 80S
D) None of the above
2. What is the smallest ribosome subunit in the prokaryotic cell?
A) 70S
B) 20S
C) 30S
D) None of the above
3. What is the total ribosome size in the prokaryotic cell?
A) 80S
B) 70S
C) 60S
D) None of the above
4. What is located on the tRNA?
A) Codons
B) Anti-Codons
C) Both
D) Niether
5. What are the 3 subclasses of eicosanoids?
A) Prostaglandins, Thromboxanes, and Leukotrienes
B) Terpenes, Leukotienes, and Prostaglandins
C) Both A and B
D) None of the above
6. Which of the following is one of the most abundant of the aldohexoses?
a. Glucose
b. Gulose
c. Idose
d. Talose
e. None of the above
7. Which of the following statements is NOT true concerning fatty acids?
a. Most fatty acids have an even number of carbons
b. Double bonds are most often trans
c. If more than one carbon-carbon double bond is present they are not conjugated
but are separated by a methylene unit
d. The hydrocarbon is almost always unbranched
e. None of the above
,PHA 3568 Biochem Quiz Questions
8. Which of the following is a function of integral proteins?
a. acting as a receptor site
b. acting as an enzyme
c. acting as a transport protein
d. All of the above
e. None of the above
9. When DNA molecules in the double helix are subjected to relatively mild condi-
tions which causes the two strands to come apart is called
a. ligase
b. replication
c. annealing
d. denaturing
e. None of the above
10. Which DNA polymerase catalyze chain elongation in the 5’- 3’ direction?
a. DNA polymerase I
b. DNA polymerase II
c. DNA polymerase III
d. All of the above
e. None of the above
11. Which one is the tertiary structure of DNA?
a. Double Helix
b. Supercoiled DNA
c. Quadruplex DNA
d. b&c
12. catalyze the hydrolytic removal of terminal nucleotides?
a. Endonucleases
b. Exonucleases
c. Nucleases
d. Ribonucleases
13. Replication is:
a. the storage of genetic information
b. the faithfull duplication of genetic information
c. the expression of genetic information
d. the transfer of the genetic information
14. The smallest form of RNA is:
a. transfer RNA
b. Ribosomal RNA
c. Messenger RNA
d. none of the above
,PHA 3568 Biochem Quiz Questions
15. is the unwinding protein.
a. SSB protein
b. primase
c. helicase
d. DNA girase
16. A hemiacetal functional group is best described as:
A. A functional group that consists of a carbon center bonded to one R group, a hydrogen
atom, an —OH group, and an —OR’ group.
B. A functional group that consists of an —OH group.
C. A functional group that consists of a carbon center with two R groups, an —OH group,
and an —OR’’ group.
17. Interactions with plants of the same species are best described as , in-
teractions with plants of other species are best described as , and a plant
communicating with itself is best described as .
A. autosignaling, interspecific, and intraspecific
B. interspecific, intraspecific, and autosignaling
C. intraspecific, interspecific, autosignaling
18. What types of proteins are usually bound to the membrane by noncovalent, ionic and
hydrogen bonding interactions of their amino acid residues with complementary amino
acid residues in integral proteins that are exposed on the membrane surface?
A. Membrane proteins
B. Peripheral proteins
C. Integral proteins
19. A nucleotide has:
A. Nitrogenous bases
B. A five-carbon carbohydrate (an aldopentose)
C. One, two, or three phosphate groups
D. All of the above
E. None of the above
20. Changes in DNA base sequences that do not affect the function of protein products
can be best described as:
A. Spontaneous mutations
B. Silent mutations
C. Induced mutations
21. The three stages of protein synthesis occur in which of the following orders:
A. Elongation, Termination, Initiation
B. Initiation, Termination, Elongation
, PHA 3568 Biochem Quiz Questions
C. Initiation, Elongation, Termination
22. Which of the following is a true statement?
a) Carbohydrates are linked to Proteins by Ionic bonds
b) O-Glycosidic bonds are linked using Serine and Threonine
c) N- Glycosidic bonds use the side chains of Glutamine
d) O-Glycosidic Bonds link to form monosaccharides
23. What is the most common amount of fatty acid found within a Carbon atom?
a) Between 2 and 6
b) Between 30 and 50
c) Between 1,000 to 1,000,000,000
d) Between 12 and 24
24. Which of the following substance require Active transport through the cell mem-
brane?
a) Glucose
b) Lipids
c) Sodium
d) Water
25. Which of the following are Pyrimidine Bases?
a) Cytosil
b) Uracil
c) Thymine
d) All of the above
26. The process of RNA synthesis is called
1. What is the total ribosome size used in a eukaryotic cell?
A) 100S
B) 70S
C) 80S
D) None of the above
2. What is the smallest ribosome subunit in the prokaryotic cell?
A) 70S
B) 20S
C) 30S
D) None of the above
3. What is the total ribosome size in the prokaryotic cell?
A) 80S
B) 70S
C) 60S
D) None of the above
4. What is located on the tRNA?
A) Codons
B) Anti-Codons
C) Both
D) Niether
5. What are the 3 subclasses of eicosanoids?
A) Prostaglandins, Thromboxanes, and Leukotrienes
B) Terpenes, Leukotienes, and Prostaglandins
C) Both A and B
D) None of the above
6. Which of the following is one of the most abundant of the aldohexoses?
a. Glucose
b. Gulose
c. Idose
d. Talose
e. None of the above
7. Which of the following statements is NOT true concerning fatty acids?
a. Most fatty acids have an even number of carbons
b. Double bonds are most often trans
c. If more than one carbon-carbon double bond is present they are not conjugated
but are separated by a methylene unit
d. The hydrocarbon is almost always unbranched
e. None of the above
,PHA 3568 Biochem Quiz Questions
8. Which of the following is a function of integral proteins?
a. acting as a receptor site
b. acting as an enzyme
c. acting as a transport protein
d. All of the above
e. None of the above
9. When DNA molecules in the double helix are subjected to relatively mild condi-
tions which causes the two strands to come apart is called
a. ligase
b. replication
c. annealing
d. denaturing
e. None of the above
10. Which DNA polymerase catalyze chain elongation in the 5’- 3’ direction?
a. DNA polymerase I
b. DNA polymerase II
c. DNA polymerase III
d. All of the above
e. None of the above
11. Which one is the tertiary structure of DNA?
a. Double Helix
b. Supercoiled DNA
c. Quadruplex DNA
d. b&c
12. catalyze the hydrolytic removal of terminal nucleotides?
a. Endonucleases
b. Exonucleases
c. Nucleases
d. Ribonucleases
13. Replication is:
a. the storage of genetic information
b. the faithfull duplication of genetic information
c. the expression of genetic information
d. the transfer of the genetic information
14. The smallest form of RNA is:
a. transfer RNA
b. Ribosomal RNA
c. Messenger RNA
d. none of the above
,PHA 3568 Biochem Quiz Questions
15. is the unwinding protein.
a. SSB protein
b. primase
c. helicase
d. DNA girase
16. A hemiacetal functional group is best described as:
A. A functional group that consists of a carbon center bonded to one R group, a hydrogen
atom, an —OH group, and an —OR’ group.
B. A functional group that consists of an —OH group.
C. A functional group that consists of a carbon center with two R groups, an —OH group,
and an —OR’’ group.
17. Interactions with plants of the same species are best described as , in-
teractions with plants of other species are best described as , and a plant
communicating with itself is best described as .
A. autosignaling, interspecific, and intraspecific
B. interspecific, intraspecific, and autosignaling
C. intraspecific, interspecific, autosignaling
18. What types of proteins are usually bound to the membrane by noncovalent, ionic and
hydrogen bonding interactions of their amino acid residues with complementary amino
acid residues in integral proteins that are exposed on the membrane surface?
A. Membrane proteins
B. Peripheral proteins
C. Integral proteins
19. A nucleotide has:
A. Nitrogenous bases
B. A five-carbon carbohydrate (an aldopentose)
C. One, two, or three phosphate groups
D. All of the above
E. None of the above
20. Changes in DNA base sequences that do not affect the function of protein products
can be best described as:
A. Spontaneous mutations
B. Silent mutations
C. Induced mutations
21. The three stages of protein synthesis occur in which of the following orders:
A. Elongation, Termination, Initiation
B. Initiation, Termination, Elongation
, PHA 3568 Biochem Quiz Questions
C. Initiation, Elongation, Termination
22. Which of the following is a true statement?
a) Carbohydrates are linked to Proteins by Ionic bonds
b) O-Glycosidic bonds are linked using Serine and Threonine
c) N- Glycosidic bonds use the side chains of Glutamine
d) O-Glycosidic Bonds link to form monosaccharides
23. What is the most common amount of fatty acid found within a Carbon atom?
a) Between 2 and 6
b) Between 30 and 50
c) Between 1,000 to 1,000,000,000
d) Between 12 and 24
24. Which of the following substance require Active transport through the cell mem-
brane?
a) Glucose
b) Lipids
c) Sodium
d) Water
25. Which of the following are Pyrimidine Bases?
a) Cytosil
b) Uracil
c) Thymine
d) All of the above
26. The process of RNA synthesis is called
