A+ Cut Off Prediction for 2011 VCAA Biology Exam 1

[Russ]

Phagocytes and inflammation (swelling) is correct

[Charmz]

yer what occured at the site ... eg did was histamine released by mast cells did phagocytes rush to the area to engulf invading particles did arterioles dialate, did they become more permeable and leaky ?

This really depends on what VCE teaches you, but poison ivy is not mast cell mediated and is a full T cell mediated immune response

Don't igE have something to do with poision ivy too which means B cells are involved?

[Charmz]

zzz so if i said that mast cells released histamine and that phagocytes were drawn to the area this was wrong ? and swelling occured

That would be correct.

[Russ]

Don't igE have something to do with poision ivy too which means B cells are involved?

Poison Ivy is a type 4 DTH hypersensitivity. That means it uses T cells and phagocytosis/inflammation as far as I'm concerned.

If VCE teaches you only one mechanism for allergic reactions (IgE and mast cells) then that would have been correct. Having never done VCE, I can't say.

[Charmz]

Don't igE have something to do with poision ivy too which means B cells are involved?

Poison Ivy is a type 4 DTH hypersensitivity. That means it uses T cells and phagocytosis/inflammation as far as I'm concerned.

If VCE teaches you only one mechanism for allergic reactions (IgE and mast cells) then that would have been correct. Having never done VCE, I can't say.

Yeah we did get taught all that.

[HERculina]

i said something along the lines of phagocytes releasing interleukin/cytokines when they try to get rid of poison ivy which creates inflammation by dilating blood vessels, increasing blood flow (swelling) and increasing their p[ermeablilty so more macrophages leak to infected tissues, crowding around and causing pain? how many marks would you give this

[epinephrine]

yes I said that aswell would that get a mark?

[HERculina]

i hopeee soooooo
anyway what has the highest A+ cut off mark ever been?

[rolftina]

BTW what would the A cut off mark be around? Say, 50+ or?

[Keo]

BTW what would the A cut off mark be around? Say, 50+ or?

I'd say you needed to get 60/75 of the exam right.

i hopeee soooooo
anyway what has the highest A+ cut off mark ever been?

Highest was 62.5 in 2008

[Bing 101]

i hopeee soooooo
anyway what has the highest A+ cut off mark ever been?

62.5 I think =]

[rolftina]

I'd say you needed to get 60/75 of the exam right.

For an A? :/ What about A+ then?

[Keo]

I'd say you needed to get 60/75 of the exam right.

For an A? :/ What about A+ then?

Im estimating that'd be the cutoff for A+, an A from my guess you'll need a minimum of 55 marks right

[The Full House]

Why did the graph line in the last question go horizontal!?!?

I wrote that the reaction reached maximum efficiency =l

[Truck]

Why did the graph line in the last question go horizontal!?!?

I wrote that the reaction reached maximum efficiency =l

yeah that's it I think, I wrote that the enzymes used in the reaction were saturated + some more BS I forgot ROFL.