Course

Genetics

Study Pack

Set 7 Dna Structure And Replication

Back to Sets
Question 1

(Multiple Choice)

Free
If complementary DNA strands were arranged in a parallel manner, what would you expect to see?

A) The phosphodiester backbones would be too close and repel one another.
B) There would be no discernable difference between DNA strands aligned in a parallel versus an antiparallel manner.
C) Complementary nucleotides would line up normally; but fewer hydrogen bonds would form, so the strands could be more easily pulled apart.
D) Some regions of the two strands may form atypical hydrogen bonds, but the overall structure of the two DNA strands would not be stable.
E) Complementary nucleotides would be attracted to each other, forming ionic bonds that would make the helix stable but not uniform in width.

Answer

Question 2

(Multiple Choice)

Free
What type of bond is formed between the hydroxyl group of one nucleotide and the phosphate group of an adjacent nucleotide, forming the sugar- phosphate backbone of DNA?

A) phosphodiester bond
B) glycosidic bond
C) hydrogen bond
D) ester linkage
E) ionic bond

Answer

Question 3

(Multiple Choice)

Free
What is the difference between a nucleotide and a nucleoside?

A) Nucleotides are involved in eukaryotic DNA replication, while nucleosides are used in bacterial DNA replication.
B) A nucleoside with a phosphate ester linked to the sugar is a nucleotide.
C) Nucleosides contain only deoxyribose sugars.
D) Nucleosides are purines, while nucleotides are pyrimidines.
E) Nucleotides are found in DNA, while nucleosides are found in RNA.

Answer