Molecular Structure and Genetics Quiz

List the four criteria that the genetic material must meet.

Analyze the results of Griffith, Avery, MacLeod, and McCarty, and Hershey and Chase, and explain how they indicate that DNA is the genetic material.

Explain why the mouse in part (d) died.

In the experiment of Avery, McLeod, and McCarty, the addition of RNase or protease to a DNA extract

• prevented the conversion of type S bacteria into type R bacteria.

• allowed the conversion of type S bacteria into type R bacteria.

• prevented the conversion of type R bacteria into type S bacteria.

• allowed the conversion of type R bacteria into type S bacteria.

Going from simple to complex, which of the following is the proper order for the structure of DNA?

• Nucleotide, double helix, DNA strand, chromosome

• Nucleotide, chromosome, double helix, DNA strand

• Nucleotide, DNA strand, double helix, chromosome

• Chromosome, nucleotide, DNA strand, double helix

What was the purpose of adding RNase or protease to a DNA extract?

Which of the following could be the components of a single nucleotide found in DNA?

• Deoxyribose, adenine, and thymine

• Ribose, phosphate, and cytosine

• Deoxyribose, phosphate, and thymine

• Ribose, phosphate, and uracil

A key difference between the nucleotides found in DNA and those in RNA is that

• those in DNA have phosphate, and those in RNA do not.

• those in DNA have deoxyribose, and those in RNA have ribose.

• those in DNA have thymine, and those in RNA have uracil.

• Both b and c are correct.

In a DNA strand, a phosphate connects a 3′ carbon atom in one deoxyribose to

• a 5′ carbon in an adjacent deoxyribose.

• a 3′ carbon in an adjacent deoxyribose.

• a base in an adjacent nucleotide.

• none of the above.

Which components of nucleotides form the backbone of a DNA strand?