10 questions in 10 minutes
1. The diagram below shows rough sketch of a ribosome during translation.

ribosome, wikimedia commons

 DataBase Center for Life Science (DBCLS) CC BY 4.0

Which option is correct?

  Location where mRNA binds to initiate translation Location where tRNA binds to initiate translation Contains peptide bonds
A IV II III
B II I IV
C I I III
D I II IV

2. Which is the correct order for the process of transcription and the formation of mRNA?

I. RNA polymerase separates the DNA into two strands
II. RNA polymerase forms covalent bonds between the RNA nucleotides.
III. RNA nucleotides with complementary base pairing form along the antisense strand of DNA
IV. RNA polymerase binds to DNA at the site of a gene
  • A. I →  II → III → IV
  • B. II → I → IV → III
  • C. IV → I → III →  II
  • D. IV → II → III → I

Q3-5: Complete the sentences below about polypeptides:
Polypeptides are chains of joined together by condensation reactions.
During translation, on mRNA undergo
bonding with tRNA.

6. Which is the correct order in the process of translation?

I. tRNA binds to the ribosome
II. Ribosome moves along the mRNA so first tRNA is released
III. Amino acids on adjacent tRNA molecules form a peptide bond
IV. mRNA binds to the ribosome
  • A. I →  II → III → IV
  • B. II → I → IV → III
  • C. IV → I → III →  II
  • D. IV → I → II → III

7. How many amino acids can be coded for by this piece of mRNA?

ACCUGGCAUAGC

  • A. One
  • B. Two
  • C. Three
  • D. Four
8. Which is the DNA base sequence for the strand of mRNA with the sequence UUAGGCAAU?
  • A. UUAGGCAAU
  • B  AATCCGTTA
  • C. GGTCCGTTG
  • D. AAUCCGTTA
9. As more than one codon may code for an amino acid the code is known as ...
  • A. degenerate
  • B. universal
  • C. complicated
  • D. complementary
10. In Sickle Cell Disease the structure of haemoglobin is altered. Why does this occur?
  • A. Chromosomal trisomy altering the structure of haemoglobin
  • B. Point mutation altering the amino acid sequence in haemoglobin
  • C. pH changes altering the intermolecular forces in haemoglobin
  • D. Post-translational editing in the Golgi apparatus


Background Image by Tim Tim
CC-BY-SA 4.0