So let’s review what we just did with a few questions:  What are the different types of RNA used and what are their roles?

Q1: How many codons code for isoleucine? For tryptophan? For leucine? Q2: What codons are associated with asparagine? With serine? Q3: From the partial mRNA sequence that you specified in Figure 10.6’s question 3 as being transcribed from the DNA template strand, remove only the first A. What amino acid sequence would be translated as a result of this change? How does that sequence compare to the amino acid sequence you translated from the original mRNA sequence?

What are some of the safeguards of the process of transcription/translation that help your cellsmake sure you are making the right protein? (think about the dictionary)

what does RNA contains?

Discuss the following: “During the evolution of life on earth, RNA lost its glorious position as the first self- replicating catalyst. its role now is as a mere messenger in the information flow from DNA to protein.”

Q: Sort each description by the type of RNA it describes? a) contains an anticodon b) specifies the amino acid squence for a protein c) contains exons d) has amino acids covalently attached e) is a component of ribosomes f) is the most abundant form of RNA A) a, b, d - TRNA, c - MRNA, e, f - FRNA B) a, c - TRNA, b, d - MRNA, e, f - rRNA C) a, e, f - FRNA, b - mRNA, c, d - TRNA OD) None of the above

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