Download Name - Mr. Lesiuk

Name : ________________
Date: _______
Molecular Basis Of Inheritance : Review #2
Protein Synthesis : (Learning Outcome E1)
L.O. E – 1 Protein Synthesis
___ 1. What is the proper name for a sequence of DNA that codes for a particular
protein?
___ 2. Protein synthesis consists of two major processes, name each.
___ 3. What molecule is produced during the first stage, back in the nucleus, after the
gene is opened up?
___ 4. Describe the second stage (translation)
___ 5. Where in the cell does translation specifically occur?
___ 6. What is a codon and what do they represent?
___ 7. How many possible codons are there?
____8. How does the number of possible codons compare with the number of possible
amino acids found in the body?
___ 9.There are duplicate codons for most of the amino acids. What is this property
called and why is it important?
___ 10. What is meant by the term template? For example one strand of DNA may act as
a template during transcription.
___ 11. Why does mRNA have to be produced for protein synthesis, why can't DNA just
do the job?
___ 12. What happens to the mRNA after it has been produced in the nucleus?
___ 13. What is the proper name for the globular organelles (protein factories) found out
in the cytoplasm?
___ 14. What type of RNA makes up these globular organelles?
___ 15. Describe the role of tRNA during the process of protein synthesis?
___ 16. Which process (transcription or translation) involves DNA?
___ 17. Which process (transcription or translation) actually starts building an actual
polypeptide?
___ 18. Which process (transcription or translation) involves tRNA?
___ 19.What are the unit molecules (monomers) of a protein?
___ 20. What is a polysome/polyribosome?
____21. What happens to a ribosome during translation when it hits the codon – (UAA or
UGA or UAG)
____22. What is the difference between an mRNA Intron and an mRNA exon?
___ 23. Besides rRNA what other organic compounds are found in the ribosomal
subunits?
___ 24. What are the bases on the tRNA called that attach to the mRNA codons at a
binding site?
____25. A typical mRNA molecule possesses a long Poly-Adenine tail, what is it's role?
____26. What happens to the mRNA's poly-adenine tail after enough of a given protein
is produced? And what will subsequently happen to the entire mRNA molecule as a result
OVER 
PRACTICE QUIZ