WSU BIO 107 EXAM 1 QUESTIONS
AND ANSWERS
Using Chargaff's rules, if the percent of A in a bacterial species is approximately 20%,
then the percent of C is:
a. 10%
b. 25%
c. 30%
d. 35% - Correct Answers -c
During the synthesis of proteins ____ reactions occur, whereas ____ reactions occur
during their removal from the cell.
a. dehydration; hydrolysis
b. hydrolysis; phosphorylation
c. transcription; translation
d. isomerization; epimerization - Correct Answers –a
Which of the following events is observed during the transcription of a gene in
prokaryotes?
a. mediator proteins add the nucleotide triphosphates onto the growing 3' end of the
mRNA
b. termination sequences halt the transcription of genes
c. a start codon is used to initiate transcription
d. transcription factors bind to DNA during elongation to help keep RNA synthesis going
- Correct Answers -b
Which of the following is consistent with the Central Dogma of Molecular Biology?
a. DNA --> RNA --> protein
b. RNA --> DNA --> protein
c. protein --> DNA --> RNA
d. DNA --> protein - Correct Answers -a
What does it mean when we say the genetic code is redundant?
a. mRNA is synthesized using the DNA template strand
b. RNA polymerase uses NTPs to synthesis mRNA
, c. introns are splices out of the mRNA
d. more than one codon can specify the addition of the same amino acid - Correct
Answers -d
If one strand of a double helix of DNA has the sequence 5'-CATTAGGAT, what will be
the sequence of the Watson-Crick counterstrand?
a. 5'-GTAATCCTA
b. 5'-TAGGATTAC
c. 5'-CAUUAGGAU
d. 5'-ATCCTAATG - Correct Answers -d
What is meant by the description "antiparallel" regarding the strands that make up
DNA?
a. the twisting nature of DNA creates nonparallel strands
b. the 5' to 3' direction of one strands runs counter to the 5' to 3' direction of the other
strand
c. base pairings create unequal spacing between the the DNA strands
d. one strand contains only purines and the other contains only pyrimidines - Correct
Answers -b
What is the name of the chemical linkage between the nucleotides in RNA and DNA?
a. glycosidic bond
b. an ester bond
c. a phosphodiester bond
d. a peptide bond - Correct Answers -c
All of the following terms are used to classify the chemical properties of the 20 different
amino acids EXCEPT:
a. nonpolar
b. pyrimidine
c. acidic
d. polar - Correct Answers -b
The properties of the protein Annexin II are listed below. What is the HIGHEST level of
structure observed for this protein?
i) alpha helices observed in X-ray structure
ii) four chains
iii) compact, folded structure
a. quarternary structure
b. tertiary structure
AND ANSWERS
Using Chargaff's rules, if the percent of A in a bacterial species is approximately 20%,
then the percent of C is:
a. 10%
b. 25%
c. 30%
d. 35% - Correct Answers -c
During the synthesis of proteins ____ reactions occur, whereas ____ reactions occur
during their removal from the cell.
a. dehydration; hydrolysis
b. hydrolysis; phosphorylation
c. transcription; translation
d. isomerization; epimerization - Correct Answers –a
Which of the following events is observed during the transcription of a gene in
prokaryotes?
a. mediator proteins add the nucleotide triphosphates onto the growing 3' end of the
mRNA
b. termination sequences halt the transcription of genes
c. a start codon is used to initiate transcription
d. transcription factors bind to DNA during elongation to help keep RNA synthesis going
- Correct Answers -b
Which of the following is consistent with the Central Dogma of Molecular Biology?
a. DNA --> RNA --> protein
b. RNA --> DNA --> protein
c. protein --> DNA --> RNA
d. DNA --> protein - Correct Answers -a
What does it mean when we say the genetic code is redundant?
a. mRNA is synthesized using the DNA template strand
b. RNA polymerase uses NTPs to synthesis mRNA
, c. introns are splices out of the mRNA
d. more than one codon can specify the addition of the same amino acid - Correct
Answers -d
If one strand of a double helix of DNA has the sequence 5'-CATTAGGAT, what will be
the sequence of the Watson-Crick counterstrand?
a. 5'-GTAATCCTA
b. 5'-TAGGATTAC
c. 5'-CAUUAGGAU
d. 5'-ATCCTAATG - Correct Answers -d
What is meant by the description "antiparallel" regarding the strands that make up
DNA?
a. the twisting nature of DNA creates nonparallel strands
b. the 5' to 3' direction of one strands runs counter to the 5' to 3' direction of the other
strand
c. base pairings create unequal spacing between the the DNA strands
d. one strand contains only purines and the other contains only pyrimidines - Correct
Answers -b
What is the name of the chemical linkage between the nucleotides in RNA and DNA?
a. glycosidic bond
b. an ester bond
c. a phosphodiester bond
d. a peptide bond - Correct Answers -c
All of the following terms are used to classify the chemical properties of the 20 different
amino acids EXCEPT:
a. nonpolar
b. pyrimidine
c. acidic
d. polar - Correct Answers -b
The properties of the protein Annexin II are listed below. What is the HIGHEST level of
structure observed for this protein?
i) alpha helices observed in X-ray structure
ii) four chains
iii) compact, folded structure
a. quarternary structure
b. tertiary structure
