Protein Synthesis, Gene Expression & Mutations Quiz

  1. Name the enzyme is used to link together the growing chain of RNA nucleotides during transcription, using a DNA strand as a template?

______

  1. Name the process of making mRNA from DNA. Where does it occur?

______& ______

  1. What is the three nucleotide sequence in mRNA that specifies a particular amino acid? ______
  1. Name all of the different types of RNA. Put your answers on the chart.

Name / Funtion
mRNA
tRNA
rRNA
  1. Name the tRNA molecule that has a specific sequence of three nucleotides that are complementary to a codon triplet on mRNA. ______
  1. Here is one strand of DNA. Write out the complementary DNA strand

ATG-GGG-CTA-AAG-CCT-GGG-CTG-CGA-TCC-AAT

  1. Write out the messenger RNA strand that would result from transcription of complimentary DNA strand you wrote in #6
  1. Using the genetic code, translate the messenger RNA strand in #7 into a sequence of amino acids (proteins). Write out the full names of the amino acids below:
  1. If the eighth nucleotide in the original DNA strand was changed form thymine to cytosine, what would the resulting mRNA and amino acid sequence look like?

mRNA =

A.A =

  1. What kind of mutation happened in question # 9 ______
  1. What type of bonds link amino acids together? ______
  1. What happens during initiation? List the sequence of events.
  1. What happens during elongation? List the sequence of events.
  1. What happens during termination? List the sequence of events.

15. Which of the following statements is true regarding introns?

A) Introns are the parts of mRNA that are translated.

B) Introns have no function

C) In general, human genes have fewer introns than genes of other organisms.

D) Introns may be involved in exon shuffling.

16. Transcription occurs in the ____ direction along the template strand forming an mRNA in the ____ direction.

A)5' to 3'; 5' to 3' B) 5' to 3'; 3' to 5'

C) 3' to 5'; 5' to 3' D) 3' to 5'; 3' to 5'

17. What area of a gene does the RNA polymerase bind to?

A) promoter B) exon

C) intron D) codon

18. Following transcription, what is the first step in RNA processing in eukaryotic cells?

A) translation B) alternative splicing

C) exon shuffling D) addition of a cap

19. RNA is transcribed using the ____ strand of DNA.

A) coding B) alternate

C) template D) non-template

20. The first mRNA codon to specify an amino acid is always:

A) TAC. B) UAA.

C) UAG. D) AUG.

21. Transfer RNAs bind during translation via their:

A) codon.

B) anticodon.

C) template.

22. Of the ____ different possible codons, ____ specify amino acids and ____ signal stop.

A) 20, 17, 3 B) 180, 20, 60

C) 64, 61, 3 D) 61, 60, 1

23.The effort to decipher the genetic code was led by ____ who was awarded a Nobel Prize for his work.

A) Nirenberg and Matthaei B) Lederberg

C) Watson D) Crick

24. RNA intereference is a mechanism for silencing gene expression at the

A) level of replication.

B) level of transcription.

C) post-transcriptional but pre-translational level.

D) level of translation.

E) post-translational level.

25. The protein ______acts as an endonuclease in the first step of RNA interference.

A)interferon

B) phaser

C) sizer

D) dicer

E) vader

26. RNA interference is stimulated in the presence of ______in the cell.

A) single-stranded RNA

B) double-stranded RNA

C) single-stranded DNA

D) double-stranded DNA

E) proteins

27.RISC is an RNA-protein complex that binds to cellular mRNAs.

A) True

B) False

28.Antisense mRNA can be produced during the life cycle of all viruses.

A) True

B) False

29. Use a Venn diagram to compare and contrast the structure, function(s), and location of the two types of nucleic acids (DNA & RNA).

1