How'd you go?

[ezye21]

mm im pretty shore you had to say DNA for the chloroplast because both chloroplast and mitochondria contain their own unique DNA that is used as a template to synthesize the enzymes required for their reactions ( eg . in chloroplast enzymes for photosynthesis and in mitochondria enzymes required for  aerobic cellular respiration )

[34590]

22/25

Kill me now~!!!! Seriously someone do it.

[Russ]

Yes, 20 is C

Russ, the different joining thing is because the light chains are never directly attached to the long heavy chain stem thing and C attaches it to the outer chain when it should be attached to the inner chain.

Terrible question, afaik, the light chain can be inside or outside. Direct quote from my immuno lecturer was "you can draw it either way"

Nearly done SAQ dot points

[Charmz]

Yes, 20 is C

Russ, the different joining thing is because the light chains are never directly attached to the long heavy chain stem thing and C attaches it to the outer chain when it should be attached to the inner chain.

Terrible question, afaik, the light chain can be inside or outside. Direct quote from my immuno lecturer was "you can draw it either way"

Nearly done SAQ dot points

Really? Good I put down C. It looked more correct. So then what is the right answer?

[bawse]

Bah, I don't know why I read this thread, it just makes me doubt myself more.

[34590]

Yes, 20 is C

Russ, the different joining thing is because the light chains are never directly attached to the long heavy chain stem thing and C attaches it to the outer chain when it should be attached to the inner chain.

WOW your speed is amazing! Not looking forward to seeing the answers though.

Terrible question, afaik, the light chain can be inside or outside. Direct quote from my immuno lecturer was "you can draw it either way"

Nearly done SAQ dot points

[Charmz]

jane1234 why did you say B for M.C Q13?

[Russ]

Sorry but I have to prep for work now, can't finish them. Probably would have skipped some of the last question anyway. As demonstrated earlier in this thread, I'm not perfect, these may not be correct and certainly aren't written to a perfect VCE standard. Lex and scocliffe will publish their ConnectEd answers later, those should be much better than my rushed job

1
a
The protein has folded in such a way that has projected the hydrophilic groups outwards. This will expose them to the water surrounding the protein and will allow binding, which will allow solubility.
b
plants
c
Sally is correct. Enzymes are predominatly protein based and thus this macromolecule cannot be an enzyme. Cellulose is a polymer of saccharides (sugars), which are the repeating unit displayed.

2
a
Thymic function is likely to correlate to weight. A weight increase is likely to indicate increased activity. Increased fat amounts (with age) indicate decreased activity. Thymic function seems to decrease after puberty.
b
Antigen in tissue is taken up by macrophages and dendritic cells for presentation to the immune system in the lymph nodes. However, Paul has previously been exposed to the poison ivy and thus has memory cells circulating; these T cells activate and stimulate the inflammatory response. This causes macrophage activation and cytokine release, which explains the red patches and blisters. The spread is explained by antigen uptake into lymphatics and circulation, allowing movement throughout body.
c
To remove any trapped antigen
d
As referenced in b), Paul has an effector memory cell reservoir that will immediately respond to any future exposure to poison ivy. As such, he should take care to avoid contact by the covering of skin

3
plants

4
a
00000 (hydrophilic head)
||||| (hydrophobic tail)
|||||
00000
b
alpha helix
c
A placebo is the administration of any compound that will not/is not thought to affect the variable being measured
d
The babies from Group A had mothers who received probiotics. These probiotics stimulated the immune system via TLR ligation to produce antibodies transferred to the foetus (this continued after birth). This prevented the "hygiene hypothesis" from being fulfilled and allowed development of normal immune function.
e
any differences between TLRs in mice and humans
any differences between immune transfer
(any 2 OK)

5
a
endocytosis
b
macrophages take up the bacterium and expose it to reactive oxygen species, low pH, proteolytic enzymes etc. in the phagolysosome.
antibodies bind the cell surface and either neutralise the pathogen or recruit the complement cascade proteins
c
it degrades proteins
d
the enzyme will have a specificity for a particular conformation (ie Ab shape). This conformation needs to be mimicked by the drug to allow binding and inhibition

[stonecold]

mm im pretty shore you had to say DNA for the chloroplast because both chloroplast and mitochondria contain their own unique DNA that is used as a template to synthesize the enzymes required for their reactions ( eg . in chloroplast enzymes for photosynthesis and in mitochondria enzymes required for  aerobic cellular respiration )

I think they will except either DNA or RNA if you explained what is going on.  As chloroplasts have their own DNA and ribosomes, they would require RNA transcripts as well to transcribe their genes.

I think they may have been getting at this, because they actually wanted you to explain in the next column.

[ezye21]

was the correct equation for cellular respiration C6H12O6 + 6O2 =========>      32Atp 6Co2+ 6H20
                                                                                        enzyme and mitochondria

[Russ]

RE: antibodies.
Light chains don't bind to the Fc region yes, but as far as I know, drawing them doesn't require you to have them on the outside or inside.

[Charmz]

c
Sally is correct. Enzymes are predominatly protein based and thus this macromolecule cannot be an enzyme. Cellulose is a polymer of saccharides (sugars), which are the repeating unit displayed.

You micht also want to say there is no nitrogen because it is not a protein, thus cellulase.

[Charmz]

RE: antibodies.
Light chains don't bind to the Fc region yes, but as far as I know, drawing them doesn't require you to have them on the outside or inside.

Fc?

[jenerator]

do you get penalised for wrong spelling?

[machomann2]

c
Sally is correct. Enzymes are predominatly protein based and thus this macromolecule cannot be an enzyme. Cellulose is a polymer of saccharides (sugars), which are the repeating unit displayed.

You micht also want to say there is no nitrogen because it is not a protein, thus cellulase.

Didn't Sally say it was an enzyme?? Wasn't Toby the one who said it was cellulose