8. Which of the following pairs of sequences might be found at the ends of an in

Question

8. Which of the following pairs of sequences might be found at the ends of an insertion sequence?
• 5’-GGGCCAATT-3’ and 5’-CCCGGTTTAA-3’
• 5’-AAACCCTTT-3’ and 5’-AAAGGGTTT-3’
• 5’-TTTCGAC-3’ and 5’-CAGCTT-3’
• 5’-ACGTACG-3’ and 5’-CGTACGT-3’
• 5’-GCCCCAT-3’ and 5’-GCCAT-3’


9. What are the major classes of cellular RNA? Where would you expect to find each class of RNA within eukaryotic cells?




10. An RNA molecule has the following percentages of bases: A=23%, U=42%, C=21%, and G=14%.
A. Is this RNA single stranded or double stranded? How can you tell?

B. What would be the percentages of bases in the template strand of the DNA that contains the gene for this RNA?



11. RNA polymerases carry out transcription at a much lower rate than that at which DNA polymerases carry out replication. Why is speed more important in replication than in transcription?

Explanation / Answer

8. The following pairs of sequences might be found at the ends of an insertion sequence

• 5’-GGGCCAATT-3’ and 5’-CCCGGTTTAA-3’
(complementary in nature)

9. There are three major classes of cellular RNA.

They include-

Messenger RNA – it carries information from DNA of the structural gene to the ribosome where the protein is made.

Synthesis takes place in nucleus and travels out to cytoplasm.

Transfer RNA – it carries amino acids to mRNA at the ribosome to assembly the protein being made.

Locate in cytoplasm.
Ribosomal RNA – it is major structural component of the ribosome where protein synthesis occurs.

Locate in cytoplasm.

10. An RNA molecule has the following percentages of bases: A=23%, U=42%, C=21%, and G=14%.

A.It is single stranded RNA molecule, because the bases are not following 1:1 ratio of purines and pyramidines.

B. Percentages of bases in the template strand of the DNA that contains the gene for this RNA are

T = 23% (complementary to A).

A = 42% (complementary to U).

G = 21% (complementary to C).

C = 14% (complementary to G).

11. RNA polymerases carry out transcription at a much lower rate than that at which DNA polymerases carry out replication.

Speed of replication is more important because the length of DNA is very long and to entirely replicate it will take many days if occur in normal rate.

So, replication has to take place faster.

Related Questions

Navigate

• Browse (All)
• Browse 8
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.