Bio1334 Genetics - Molecular Genetics - RNA To Proteins (Lecture 3)
Demonstrate a sound knowledge of the principles of mRNA translation and protein synthesis Demonstrate a sound understanding of the roles of RNA in translation
- 1.How many types of amino acids are in proteins?
- 2.Fill in the gap:The genetic code is said to be ___________, because in most cases several codons specify the same amino acid.
- 3.How do we know the genetic code is not over-lapping?
- A.
Single base mutations only ever affect one amino acid.
- B.
Single base mutations only ever affect one base.
- C.
Single base mutations affect the entire protein.
- 4.Name the virus used by Crick and Brenner, which affects E. coli, that was used to crack the genetic code.
- 5.Fill in the blank: Crick and Brenner generated mutants in rII gene of bacteriophage T4 using ________, a planar molecule that intercalates between base pairs in DNA and causes frame-shift mutations.
- 6.RRNA makes up the ribosome.How many rRNA molecules can be found in the ribosome?
- A.
Four: three in the large subunit, one in the small subunit.
- B.
Four: two in each subunit.
- C.
Three: two in the large subunit, one in the small subunit.
- D.
Three: one in the large subunit, and two in the small subunit.
- 7.Which of the following items can be found within a ribosome?
- A.
Large ribosomal subunit
- B.
Small ribosomal subunit
- C.
Medium ribosomal subunit
- D.
E site
- E.
A site
- F.
P site
- G.
X site
- H.
Y site
- I.
RRNAs
- J.
TRNAs
- K.
MRNAs
- L.
SnRNAs
- 8.What is the name given to the first step of translation?
- 9.What is the name given to the second step of translation?
- 10.What is the name given to the final step of translation?
- 11.In which direction is polypeptide synthesis?
- A.
N to C (amino-terminal to carboxy-terminal)
- B.
C to N (carboxyl-terminal to amino-terminal)
- C.
5' to 3'
- D.
3' to 5'
- 12.The ribosome is a ___________, as it is composed of rRNA which catalyses peptide bond formation.
Questions: 21 | Attempts: 269 | Last updated: Nov 4, 2015
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Sample QuestionTrue or false:DNA is less stable than RNA.
Questions: 9 | Attempts: 46662 | Last updated: Oct 6, 2020
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Sample QuestionA Cell builds it's proteins from the Instructions encoded inits _________?
Questions: 5 | Attempts: 14098 | Last updated: Jun 12, 2020
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Sample QuestionMendel observed 7 pairs of contrasting characters in Pisum sativum. One of the following is not a part of that. Find out.
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