In protein biosynthesis, the first codon of the new amino acid chain corresponds to:     a. C       b. D     c. Y           d. M     e. S

Explain the relationship between codons, anticodons, and amino acids. Be sure to define each and use an example in your explanation.

A protein had the amino acids leu-gly at codons 10 and 11. A deletion of the 5’ base of the leu codon (i.e. the first base) changed the protein so that it now reads ser-ala at codons 10 and 11. The original Leu codon must have been: (hint: make use of a codon table to answer this question)   CUG AUG CUA CUC      CUU

You want to translate a polycistronic bacterial MRNA in eukaryotic cells. You remove all stop codons except the last stop codon in the bacterial DNA before inserting it into the genome of a eukaryotic cell. Can you get a functional protein using this method? Yes or No. Briefly justify your answer.

Phosphorylation is a very common post-translational modication (PTM) to regulate protein function. Which amino acids are most commonly regulated by phosphorylation? Select an answer and submit. For keyboard navigation, use the up/down arrow keys to select an answer. a Leucine, arginine, serine. b Tyrosine, arginine, glutamine. C Serine, threonine, tyrosine. d Glutamine, arginine, tyrosine. e Serine, tyrosine, glutamine.

When the ribosome "reads" the codon UAG, UGA or UAA... A) the polypeptide is released from ribosome but ribosome continues reading the mRNA B) the proper tRNA enters the ribosome C) translation begins D) polypeptide is released from the ribosome and translation ends

3)Which of the following statements are true? Choose all that apply a)There are multiple codons possible for nearly all amino acids b)Each stop codon also codes for an amino acid c)Each tRNA will base pair with only one codon d)The start codon also codes for an amino acid e)Each codon in mRNA codes for exactly one amino acid f)Each codon in tRNA codes for exactly one amino acid g)Each anticodon in tRNA pairs with exactly one codon h)Each tRNA carries exactly one type of amino acid