Biology: Genetic Code. Are my answers right?

Posted on 2015-11-19 06:34:00 in Biology by SELINA

1.) What if our proteins were composed of 15 different amino acids? What would be the minimum codon size that would work to specify this number of amino acids?

a.) 5
b.) 3
c.) 1
d.) 2
e.) 15

2.) Suppose that new organism was discovered that contained DNA composed of 8 different nucleotide bases (i.e. ATCGWXYZ) and proteins composed of 150 different amino acids.

What would be the minimum codon size needed to code for the 150 different amino acids?

a.) 50
b.) 8
c.) 3
d.) 2
e.) 80

3.)The synthesis of RNA in a prokaryotic cell specifically begins at the

a.) -35 consensus site.
b.) start codon.
c.) promoter.
d.) +1 DNA site.
e.) termination signal.

4.) Which of the following statements describes one mechanism of transcription termination?

a.) Recognition of a stop codon by a release factor.
b.) Recognition of the termination signal by transcription initiation factors
c.) Addition of a 5' cap to the mRNA.
d.) Collision between histone proteins and the RNA polymerase.
e.) Formation of stem-loop/hairpin structures in the RNA sequence.

5.) What gene region is responsible for helping the RNA polymerase determine where to begin transcribing DNA into RNA?

a.) the termination signal
b.) the spliceosome
c.) the introns
d.) the start codon
e.) the promoter

I don't really have an answer for this one. I couldn't find the answer in my professor's online lecture.

---

Answer Comment

No Answers Posted Yet.