Bio1334 Genetics - Molecular Genetics - RNA To Proteins (Lecture 3)

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2. Order the steps of translation.

Step One

Step Two

Step Three

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10. How do we know the genetic code is not over-lapping?

Single base mutations only ever affect one amino acid.

Single base mutations only ever affect one base.

Single base mutations affect the entire protein.

11. Put the steps of translation termination into the correct order.

Step One

Step Two

Step Three

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12. TRNA is the key to deciphering the codons in mRNA.Put the steps in the correct order.

Step One

Step Two

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13. In which direction is polypeptide synthesis?

N to C (amino-terminal to carboxy-terminal)

C to N (carboxyl-terminal to amino-terminal)

5' to 3'

3' to 5'

14. RRNA makes up the ribosome.How many rRNA molecules can be found in the ribosome?

Four: three in the large subunit, one in the small subunit.

Four: two in each subunit.

Three: two in the large subunit, one in the small subunit.

Three: one in the large subunit, and two in the small subunit.

15. RNA plays three roles in translation.Math the forms of RNA to their roles in translation.

mRNA

tRNA

rRNA

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16. Which of the following items can be found within a ribosome?

Large ribosomal subunit

Small ribosomal subunit

Medium ribosomal subunit

E site

A site

P site

X site

Y site

RRNAs

TRNAs

MRNAs

SnRNAs

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17. Put the steps of translation initiation into the correct order.

Step One

Step Two

Step Three

Step Four

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18. Put the steps of elongation into the correct order.

Step One

Step Two

Step Three

Step Four

Step Five

Step Six

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Bio1334 Genetics - Molecular Genetics - RNA To Proteins (Lecture 3)

1. 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.

2.

What first name or nickname would you like us to use?

2. Order the steps of translation.

3. What is the name given to the first step of translation?

4. What is the name given to the second step of translation?

5. What is the name given to the final step of translation?

6. The ribosome is a ___________, as it is composed of rRNA which catalyses peptide bond formation.

7. How many types of amino acids are in proteins?

8. Fill in the gap:The genetic code is said to be ___________, because in most cases several codons specify the same amino acid.

9. Name the virus used by Crick and Brenner, which affects E. coli, that was used to crack the genetic code.

10. How do we know the genetic code is not over-lapping?

11. Put the steps of translation termination into the correct order.

12. TRNA is the key to deciphering the codons in mRNA.Put the steps in the correct order.

13. In which direction is polypeptide synthesis?

14. RRNA makes up the ribosome.How many rRNA molecules can be found in the ribosome?

15. RNA plays three roles in translation.Math the forms of RNA to their roles in translation.

16. Which of the following items can be found within a ribosome?

17. Put the steps of translation initiation into the correct order.

18. Put the steps of elongation into the correct order.