Exam 14: DNA Structure, Replication, and Organization

When Hershey and Chase labeled viruses with radioactive phosphorus, they concluded that the virus injects DNA and not protein into its host because ____.

The genome of an organism contains 30% adenine. Based on this, you would predict that this organism's genome also contains 30% ____. ​

Although Watson and Crick are credited with the discovery of the structure of DNA, they based this discovery on the bench work of many other scientists of the time. Name at least three different pieces of knowledge that Watson and Crick used in their discovery that was based on work from other scientists.

Wilkins and Franklin studied the structure of DNA using ____. ​

The genetic material of all living organisms is ____. ​

What is the function of the sliding clamp in DNA replication?

A DNA double helix has two strands that are held together by ____. ​

Nucleosomes are best described as ____. ​

In many cancers, the cancerous cells have fully active telomerase enzymes. Explain how this might play a role in enabling cancer cells to keep rapidly dividing.

The width of a DNA double helix ____. ​

Describe the roles of the following enzymes during DNA replication: ligase, single-stranded binding proteins (SSBs), DNA polymerase III, primase, DNA helicase.

The nucleosome core particle consists of ____. ​

A short RNA chain is synthesized as the first nucleotides in a new DNA strand by the enzyme ____ to provide a ____ for DNA elongation.

Adjacent nucleotides on a strand of DNA are connected to each other by a(n)____.

Each DNA nucleotide is composed of ____.