<p>@asteraceae
You seem to be really good at plants. Could you answer my question about lenticels that I posted? That would be awesome.</p>
<p>For that one I put that “lenticels are a unique feature of angiosperms”, “lenticels form when a region of cork cambium grows more actively than surrounding tissue, rupturing the phellem” and “lenticels originate in the plant epidermis”.</p>
<p>Same here for the lenticels question. </p>
<p>I put 4000 for the H-W equilibrium as well. I think the answer for the USDA one is just the polyploidy one.</p>
<p>For the last three questions here are the floral patterns</p>
<p>Plant 1: Ca^4 Co ^4 A ^ 4+2 G^2
Plant 2: T^6 A^6 G^3
Plant 3: Ca^4 Co^0 A^4 G^0</p>
<p>For the Michaelis-Menten kinetics question the five choices were
a. A substrate analog
b. The enzyme’s substrate
c. An allosteric inhibitor that decreases the enzyme’s affinity for the substrate
d. An allosteric enhancer that increases the enzyme’s affinity for the substrate</p>
<p>The question states that a particular chemical increases Km but leaves Vmax constant</p>
<p>“What characterizes a short-day plant?”
I put that “Flowering can be induced by an interruption of a long day with a period of darkness”. Another choice was “they need to be vernalized in order to flower”.</p>
<p>@emblem101 do you know choices for the floral pattern questions? like a-e. i remember the choices i put but not the actual names.</p>
<p>Is this statement true or false?</p>
<p>“The conformational change of Pr to Pfr is irreversible, so over the night the plant recycles the Pfr that was produced during the day and synthesizes new Pr phytochromes”.</p>
<p>@ iBelieveSO</p>
<p>A. Oleaceae
B. Brassicaceae
C. Solanaceae
D. Fagaceae
E. Liliaceae</p>
<p>What is the usual cutoff score for finals? By that I mean what is the typical percentage needed to get past this round. Of course it varies from year to year but I am curious if anybody knows this piece of information. It seems like I got about 65% on this test. I don’t know if this is enough.</p>
<p>emblem101: Were you a finalist last year?</p>
<p>No I wasn’t. I missed the cutoff by 4 points. Were you a finalist last year?</p>
<h1>788 and everyone else, I’m interested to know which questions you guys thought were ambiguous or poorly written.</h1>
<h1>801 …it’s straight from the book? Lame.</h1>
<h1>823 Were there only four questions for that set?</h1>
<p>@emblem101: No, I also missed the cutoff by exactly 4 points</p>
<p>For the lenticels question, I don’t remember the choices anymore, but from what emblem101 gave I’m not sure whether the fact that it is a growth of the epidermis is right since it actually comes from the periderm (so part of it also comes from cork), and I also think cells elongate/divide more slowly where lenticels form.</p>
<p>For the Michaelis-Menten, answer is B since it is a competitive inhibitor.</p>
<p>Pr to Pfr conversion is definitely reversible.</p>
<p>Indeed, cork cambium answers and epidermis answer are mutually exclusive.</p>
<p>Which of the following would be the most acceptable limiting factor showing a boom or bust curve in a mosquito population?</p>
<p>A. Density-independent factors
B. Density-dependent factors
C. Intrinsic rate factors
D. S factors
E. Survivorship factors</p>
<p>Both Annelids and Mollusks have </p>
<p>A. Ciliated larvae in their life cycle
B. A blastopore that develops into an anus
C. A coelom that develops from mesodermal pouches
D. Indeterminate cleavage in early development
E. A mesoderm that arises as a solid in-growth of cells from a cell near the blastopore</p>
<p>^^For the boom and bust cycle I put density-dependent factors.</p>
<p>^For the one about annelids and mollusks, I put the answer about them having tissue derived from mesodermal pouches. Both annelids and mollusks have spiral, determinate cleavage.</p>
<p>for the mollusks and annelids question, i felt like both a and e were both true, but i put a.</p>
<p>Wait, anybody want to explain for the protein one why it had to be hydrophobic interactions? Doesn’t hydrogen bonding play a huge role in secondary, tertiary, and quartenary structure as well?</p>
<p>what were the possible choices for the insect vs mammalian respiratory question?</p>
<p>and also, I think that pfr and pr question is false… the conversion is not irreversible and if anything is destroyed, its the Pfr, not the Pr.</p>
<p>@ cadaeibfed - S says that part C for type of hormone… would have been helpful to have known what was being looked for. He put peptide, but wasn’t sure if that is the type of answer being looked for. Campbells uses glycoprotein, not peptide.</p>
<p>Without seeing the test, he doesn’t remember which ones were poorly worded/ambiguous.</p>