Chapter 11 Quiz

Reverse transcriptase is an enzyme that can synthesize DNA from an RNA template. What DNA sequence is produced from an RNA molecule with the sequence 5'AUUGACGGU3'?

3'TAACTGCCA5'

Without the work of Rosalind Franklin, Watson and Crick would not have known

All of the answers are correct (which nucleotides could pair together, how many strands of DNA made up the molecule, the shape of the molecule, the width of the molecule)

What was one of the pieces of evidence most critical to the discovery of DNA structure?

An X-ray diffraction pattern suggesting a double helix shape

Beginning with the simplest level of structure, which order of organization of genetic material is CORRECT?

DNA, nucleotide, gene, genome, chromosome

______________ are made in replicating the lagging strand of DNA, but are not made during leading strand DNA replication.

Okazaki fragments

Bacteria are grown in 15N (heavy) medium and then transferred to 14N (light) medium and are allowed to replicate for two generations. The DNA is subsequently isolated and centrifuged in a CsCl2 gradient to yield what type of gradient band(s)?

One light and one half-heavy band

The nucleotides within DNA are composed of a

Phosphate group, deoxyribose sugar, and nitrogenous base

Which of the following is NOT a criterion for an organism's genetic material?

The genetic material must be dynamic, changing rapidly in response to changes in the environment

Which of the following statements about DNA replication is INCORRECT?

It is powered by the hydrolysis of ATP

Which of the following statements about telomeres is INCORRECT?

Telomeres would be longer in cells of older than younger individuals