some ap bio questions...

Test Preparation AP Test Preparation
1

<li>organelles other than the nucleus that contain DNA include
a.ribosome
b.mitochondria
c.chloroplasts
d.b and c
e.a,b and c</li>
</ol>

<p>i think its d…do you guys think so too??</p>

<p>what is the enzymes that removes the RNA nucleotides from the primer and adds equivalent DNA nucleotides to the 3’ end of Okazaki fragments
a.helicase
b.nuclease
c.ligase
d.DNA polymerase I
e.Primase
i have no idea</p>

<p>what is the effect of a nonsense mutation in a gene?
a.it changes an amino acid in the encoded protein
b.it has no effect on the amino acid sequence of the encoded protein
c.it introduces a stop codon into the mRNA
D.it alters the reading frmae of the mRNA
e.it prevents introns from being expressed
i think its a…don you think??</p>

<p>thanks…</p>

2

<ol>
<li>D is correct.</li>
<li>D is correct (again). Remember that DNA polymerase 1 replaces the RNA primer and polymerase 3 is the one that adds nucleotides to the growing complimentary strands, and proofreads afterwards.</li>
<li>C is correct. Nonsense = Stop codon, Missense = wrong codons/wrong amino acid sequence when translated.</li>
</ol>

3

<p>thank you so much...</p>