question 5G is wrong it exocytosis. its a thyroid cell and would be releasing the hormone not trying to accept it. also usually normal cells in the body cant use endocytosis unless they're phagocyte cells. i think not sure.
Another bad diagram, but basically just look at the direction of the arrows. The hormones are going INTO the cell according to the arrows, so it'll be endocytosis, which I'm pretty sure all cells are capable of. As for why the hell this cell is endocytosing its own hormone, only explanation I can think of is that it's undergoing what's known as transcytosis; where a cell does subsequent endo and exocytoses to let stuff pass through it and to the other side. Once again, horrible diagram...wonder where VCAA's old artists went...
It's out of 150 because your score is doubled if marked only once or added together if marked twice
25 marks means 12.5 really so the cut off was 62.5/75
it gets marked twice O_O y soo?
so u don't get a linient examiner and a hard marking examiner ><
OH NO! i wish for 2 lininetn exmainersss D: T___T
It gets marked if you apply for a Statement of Marks to find out your exam score (hence why I had a half mark in the score I gave above). Otherwise, it'll be just doubled.
for question 17 i reckon C is correct because wwell A and D are obviously wrong. But many people picked C which says that over 48 hours cytokinn stimulates the accumulation of starch this is wrong because the the auxin also stimulates the accumulation of starch as well and also with no hormones added there is a accumulation of starch aswell. C is right as there is an immediate effect because the points on the y-axis start at a different point and the gradient of the graph changes immediatly aswell
I was honestly tossing up between B and C as well and it's quite ambiguous really, but I still went with B. As for the point that no hormones and auxin stimulates the accumulation of starch too, I think that's irrelevant. B doesn't state that cytokinins are the only stimuli that cause the accumulation of starch; it's just claiming that it can. As for C, the fact that the graph starts at different points on the Y axis is irrelevant too; that's just due to differences in the plants tested. As for the different gradients, that's what worried me, but I discarded it in thinking that the differences in the gradients are so ridiculously small (we're talking in mg here) that such discrepancies would pop up in a graph even if I measured three plants all without hormones due to random errors in the nature of plant growth. Of course you're still welcome to disagree though, since yeh, C could still be right in many regards, and I was honestly just looking for reasons for it to be wrong so I could eliminate an answer.
how can 25 be D. Some of the amino acids go straight to the database..?
I don't think the arrows are really indicative of complete removal like that. These protein mixtures will usually have like trillions of each protein, and they're likely to just take half of that mixture, send it to the database, and use the leftover to do the next step. If they removed all of it, how would they even do the next steps to begin with? In the end, you can just use elimination though really, and that's what I'd do to verify my answer. A is wrong because peptidases actually cut inside peptides, not separate and sort them out cleanly. If you cleaved at them with peptidases, you'd end up with a mess of protein mush. B is wrong since you're actually breaking apart multi-peptidal proteins into single peptide strands, and the wording of B doesn't make sense to begin with anyway. C is quite obviously wrong due to how genetics works, so that leaves D.
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