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Protein Synthesis (Quiz 2)

How is protein synthesis similar to the catalysis of a reaction by an enzyme? Protein synthesis is a series of chemical reactions in which molecules are brought into contact with one another and chemical bonds are formed and broken. The key event in protein synthesis is the formation of bonds between adjacent amino acids in the protein and the breaking of bonds between the same amino acids and the tRNA molecules that first bring the amino acids to the ribosomes. The function of the ribosome is to bind the tRNA molecules and then move through the ribosome. As the tRNAs are moved, the ribosome’s configuration brings the amino acids into contact and then severs the bonds between tRNA and amino acid. In a general sense, RNA is acting as an enzyme that catalyzes the reactions that form the amino acid chain.

View the animation below, then complete the quiz to test your knowledge of the concept.






1During protein synthesis, transfer RNA carrying amino acids bind to the 70S ribosome at the following site(s):
A)E site
B)P site
C)A site
D)E, P, and A sites
E)P and A sites



2The initiating transfer RNA, carrying formylmethionine, binds to which site?
A)E site
B)P site
C)A site
D)E, P, and A sites
E)P and A sites



3The amino acids carried by the transfer RNA are joined by...
A)ionic bonds.
B)covalent bonds.
C)polar bonds.
D)peptide bonds.
E)nonpolar bonds.



4The three base sequence on the transfer RNA is the codon.
A)True
B)False



5The anticodon is the three base sequence on the messenger RNA that binds with the codons of the transfer RNA.
A)True
B)False







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