<p>PHX,
porifera do not have true tissues, but cnidarians do. Also all organisms pro and euk have plasma membranes</p>
<p>yah it wasn’t. Im sorry. Cnidarians have true tissue. My teacher made us memorize the entire kingdom animalia and chordata trees. and i think it was all organisms. Something has to hold the bacteria together, right?</p>
<p>doublechenn,
do you remember what the question was for the founder effect one with the flower</p>
<p>Um, a plant that has a dry seed that attatches to animals inorder to spread itself. the same plant of a rare color colonized a previously desolate island. This is an example of:…</p>
<p>I thought it could be the cell wall that provides support and holds the cytosol for plants and prokaryotes so I put animals, but no prokaryotes</p>
<p>plants have both, but the wall holds the membrane which inturn holds the cytosol. because when a plant cell shrinks/shrivels, the membrane is left to hold it together, and its not attached to the wall</p>
<p>doublechenn,
I think you may be right about it being the founder effect, but doesnt adaptive radiation mean also that oraganism move to uninhabited places. like humans radiating out of africa</p>
<p>I think thats just radiation. Adaptive would be Darwin’s finches, who evolved different beaks to consume different food sources on different islands.Do you remember any other questions?</p>
<p>there was this question about a lab where a person put penecillin in bacteria cultures. he question was like after a while the bacteria began to show up where the penecillin was. WHat happened? I think i put like the bacteria colony was immune to the pencillin</p>
<p>i forget, was one of the options there were already bacteria resistant in the culture? or was that a different question cuz i read through the entire m section and did the problems in my head cuz i had time, now theyre all jumbled in my head.</p>
<p>yeah that was one of the choices, but in the description didnt it say that the penecillion killed all of the bacteria in the white circle and therefore none of the bacteria were orgianlly resistant>?</p>
<p>That was a vague question, because we dont know if all the bacteria all genetically identical at the start, but from the evolutionary stand point, traits aren’t evolved due to circumstances, but rather picked out of an existing selection of traits. I was thinking the penecillion killed all the bacteria until it met a bacteria that was resistant and then thats how the bacteria colonies started in there because it met a bacteria that was resistant, and not that resistance evolved over the span of 24 hours</p>
<p>the growth wasnt exponential it was linear, the graph had the numbers 10,20,30 and 40, thats not exponential, and the graph was a straight line and exponential growth graphs are curved.</p>
<p>Yeah a confusing question. What I had trouble with was what if the bacteria were resistant from the start wouldnt where be black spots in the white patch b/c the bacteria would have stayed alive, but since there white spot was completely blank i thought the penecillin killed all of the bacteria in the area.</p>
<p>It was logistical graph, example pH, a pH of 4 is 10000x more acidic than a pH of 8, not half, so if the graph was in regular units, it would have been a J curve</p>
<p>yea it was logistical linear wasnt an option lol i just know the answer started with L lol</p>
<p>i was confused for a sec too, i thought it was that S curve and i was looking at the answers thinking… none of these make sense. but im pretty confident on my answer for that one</p>
<p>I just saw this, so yeah idk felt some questions were a bit too specific . I’m unsure off the following:
The island portions - put acac</p>
<p>One question which one answer choice (the one I chose) said soothing about the surface to area ratio - do you guys remember? </p>
<p>Then was the solution isotonic? In bio M?I don’t think it was because some solute were still present in the bag but not sure</p>
<p>then penicillin was the most effective right? </p>
<p>And the endoderm question ugh </p>
<p>I loved the biochem cell bio questions though (except for the ratio thing) I’ll be happy with anything above a 700</p>
<p>does anyone know if this was a test that was already administered? then maybe we could find the thread and find more answers.</p>
<p>@penguin20
yes, got the surface area to volume and acac </p>
<p>I put tetracycline for the antibiotic question</p>
<p>Solution was not isotonic, but I don’t remember what I put as the answer</p>
<p>what’s the endoderm question</p>