Answer:
<u>d. the cells in primary cell cultures do not divide.</u>
A key difference between primary cell cultures and secondary cell lines is that<u> the cells in primary cell cultures do not divide.</u>
<u>hope</u><u> </u><u>it</u><u> </u><u>helped</u><u> </u><u>you</u><u> </u>
Explanation:
<em>The main difference between primary and secondary cell culture is that the primary cell culture contains the cells directly obtained from host tissue, whereas the secondary cell culture contains sub-cultured cells from primary cell culture.</em>
Answer:
They are both used for energy
Answer:
B
Explanation:
We know that the AmpR gene region has been interrupted. So this means the AmpR gene will not function in the recombinant DNA.
But the question tells us that the TetR gene is not interrupted, so the TetR gene will still function.
AmpR represses the protein that confers resistance to ampicillin, and AmpR is no longer functional, <u>so the new bacterial cells will be resistant to ampicillin.</u>
TetR represses the protein that causes resistance to tetracyline, and TetR is still functional, <u>so the new bacterial cells will not be resistant to tetracycline. </u>
This means B, there will be <u>growth on ampicillin but not tetracycline containing media.</u>
True (have to write this to fill word count)
