<p>wait so the reproductive system for the grasshopper was the back? as in choice A?</p>
<p>I believe so.</p>
<p>yea, in the back. Also for the Aa one wouldnt only the A (or was it a) increase if continued spraying because thats what would help for the insecticide?</p>
<p>No, both because both homozygous pairs were selected against, AA made an insect die from the insecticide, aa made the insect die from inability to eat… Aa was selected for, so A and a should even out in frequency…</p>
<p>What’s the answer for the antibiotic question? Was it that antibiotics only disrupt replication and translation of prokaryotes and not eukaryotes or was it only bacteria could ingest the antibiotic and not human cells?</p>
<p>I put the latter… may be wrong… verify? someone?</p>
<p>for the smoking one- was it emphysma?</p>
<p>yeah… it was emphysema</p>
<p>anyone know the answer to the antibiotic question asked by Pi?</p>
<p>i dont remember it, what was the background info?</p>
<p>
</p>
<p>I think this was the background information. I can’t make heads or tailes of it. Of course the antibiotic only targets prokaryotes (bacteria) but some of the antibiotics can probably only be ingested by bacteria cells also.</p>
<p>Yeah that was the question. I was 50/50 on that one… ugh.
Anyone else?</p>
<p>was that m?</p>
<p>yeah I think so.</p>
<p>Anyone know??</p>
<p>Hmm… from the research I’ve done, I think the answer is the disruption of replication and translation of prokaryotes. Nothing’s mentioned ingestion of antibiotics.</p>
<p>“Another kind of antibiotic–tetracycline–also inhibits bacterial growth by stopping protein synthesis. Both bacteria and humans carry out protein synthesis on structures called ribosomes. Tetracycline can cross the membranes of bacteria and accumulate in high concentrations in the cytoplasm. Tetracycline then binds to a single site on the ribosome–the 30S (smaller) ribosomal subunit–and blocks a key RNA interaction, which shuts off the lengthening protein chain. In human cells, however, tetracycline does not accumulate in sufficient concentrations to stop protein synthesis.
Similarly, DNA replication must occur in both bacteria and human cells. The process is sufficiently different in each that antibiotics such as ciprofloxacin–a fluoroquinolone notable for its activity against the anthrax bacillus–can specifically target an enzyme called DNA gyrase in bacteria. This enzyme relaxes tightly wound chromosomal DNA, thereby allowing DNA replication to proceed. But this antibiotic does not affect the DNA gyrases of humans and thus, again, bacteria die while the host remains unharmed.”</p>
<p>Anybody remember the alcohol dehydrogenase and the flies?</p>
<p>For the alcohol dehydrogenase, I put that it made them more likely to die from alcohol…or something. It definitely wasn’t more resistant to death, because if you can’t oxidize it that causes major problems.</p>
<p>Was the allele frequency with the flies eco only? I took M and I don’t recall it.</p>
<p>I believe it was only on the ecology test…</p>
<p>i got what silent sailor put.</p>