Ap bio Ch 13

An RNA primer is formed starting at the underlined T (T) of the template. Which of the following represents the primer sequence?

5'-A C G U U A G G-3'

How is the transformation in bacteria most accurately described?

Assimilation of external DNA into a cell

In his transformation experiments, what did Griffith observe?

Mixing a heat killed pathogenic strain of bacteria with a living nonpathogwnic

In which order do the necessary enzymes act to repair thymine dimmer by nucleotide excision repair?

Nuclease, DNA polymerase, DNA ligase

An Okazaki fragment has which of the following arrangements?

5' RNA nucleotides, DNA nucleotides 3'

Cytosine makes up 42% of the nucleotides in a sample of DNA from an organization. Approximately what percentage of the nucleotides in this sample will be thymine?

8%

In an analysis of the nucleotide composition of DNA, which of the following will be found?

A+G=G+T

Suppose you are provided with an actively dividing culture of Escherichia coli bacteria to which radioactive thymine has been added. What would happen if a cell replicates once in the presence of this radioactive base?

DNA in both daughter cells would be radioactive

Which enzyme catalyzes the elongation of a DNA strand in the 5' to 3' direction?

DNA polymerase 3

After mixing a heat killed, phosphorescent (light-emitting) strain of bacteria with a living non phosphorescent strain, you discover that some of the living cells are now phosphorescent. Which observations would provide the best evidence that the ability to phosphorescence is a heritable trait?

Descendent of the living cells are also phosphorescent.

Which of the following statements describes one difference between DNA replication in prokaryotes and DNA replication in eukaryotes?

Prokaryotic chromosomes have a single origin of replication, whereas eukaryotic chromosomes have many

What is meant by the description "anti parallel" regarding the two strands of nucleic acids that make up DNA?

The 5' to 3' direction of one strand runs counter to the 5' to 3' direction of the other strand

The difference between ATP and the nucleoside triphosphate during DNA synthesis is that

The nucleoside triphosphates have the sugar deoxyribose; ATP has the sugar ribose

What is the function of DNA polymerase 3?

To add nucleotides to the 3' end of a growing DNA strand