BIOL 4003 module 7 quiz

_____________________ , DNA can be replicated to produce two double helices with the identical base sequences?

a) Due to the AT/GC rule

What are the expected results for the Meselson and Stahl experiment after 3 generations (i.e, 3 rounds of DNA replication in the presence of light nitrogen)? Note: during generation zero, the DNA is all heavy, and subsequent generations only make light DNA.

a)1/4 half heavy, 3/4 light

At the E. coli origin of replication, the DNA begins to unwind at the

d) AT-rich region

In order to replicate the entire circular chromosome of E. coli, how many replication forks are used?

Two

DNA polymerase is not able to do which of the following?

synthesize DNA in 3’-5’ direction, and synthesize DNA on a bare template strand

In the leading strand, DNA is made in the direction _________ the replication fork and is made as __________.

toward, one continuous strand

Which of the following is not found in a replisome?

DnaA protein

During proofreading, DNA polymerase

a) cuts out a mismatch by digesting DNA in the 3' to 5' direction.

Below is a DNA molecule, with the ends labeled A, B, C and D. Which ends would get shorter during DNA replication if telomerase did not function?

A 5'-----------------------------------------------3' B

C 3'-----------------------------------------------5' D

A and C

A and D

B and D

B and C

B and C

LTP Question: If the gene you chose for the Progress Report on Safety and Ethics involves bioremediation, your progress report should not involve which of the following:

What warnings you might provide to consumers