Hi, so a few more questions, sorry!
1. In relation to recombinant plasmids, as the genetic markers like antibiotic resistance or ampicillin resistance already in the plasmid or are they inserted by us?
2. How much detail do we need to know about glucose? Like, do we need to know about how to glucose enters the cells and about its structure and stuff?
3. Does the lac operon require ATP at all?
4. Do prokaryotes undergo aerobic respiration too? If so, where does this occur?
5. When talking about the location of the light dependent reaction, is it best to say on the grana/granum, or on thylakoid membrane or thylakoid disks or in the thylakoids?
6. Which ions should we talk about if we are asked which are involved in the transmission of an action potential? The 2016 Insights exam asked (MC 15)
Which of the following ions are repsonsible for the transmission of an action potential allong an axon:
A. Calcium and sodium
B. Sodium and potassium
C. Potassium and Calcium
D. Sodium, potassium aand calcium
The correct answer was B, but when I looked it up on the internet, some sites said that calcium was involved as well.
Thank you!
1. Naturally occurring, because then a gene can be inserted in the middle of the antibiotic resistance gene, and if the plasmid is no longer resistant then you know it successfully took up the gene
2. Need to know its chemical formula (C6H12O6) and that it's a large polar molecule.
3. I think not (at least not for the lactose to bind to the repressor and remove it). You don't need to know if it does or not though.
4. Some do, some don't. Those that do use their plasma membrane (remember that mitochondria were once thought to be free living bacteria). Doubt you need to know for VCE though.
5. VCAA has said grana before so I would go with that (2012 exam 1 Q8)
6. You won't be asked about it, it's not on the study design anymore.
Also do you need to know the functions of plant hormones?
As for plant hormones, they're useful to know but I don't think there's too much emphasis on it now compared to previous study designs.
You definitely don't need to know the functions of any specific plant hormones.
3) Do T cells have specialized naive cells or are they general? (Basically, are there generalist naive T cells that differentiate into their specialties or are there naive T helper and naive cytotoxic T cells?)
3. Not relevant to VCE.
Vox is right that it's not relevant, but I think it might affect how you word your answer, so I'm going to answer it anyway
Once T cells have matured and leave the thymus they are either Th or Tc cells.
Can anyone explain how to interpret the phylogenic tree in the 2017 exam MCQ32? Thanks!
When I did this question I didn't really use the phylogenetic tree except for age. You don't need to use the info on the right to answer it. So from the tree you can see that the order from oldest to youngest is R-S-T-U (evolved first-evolved last).
So then you just have to look at the possible answers.
Which of the following shows the correct placement of the organisms on the phylogenetic tree?
A. R –
animals, S – plants, T – bacteria, U – protists
B. R – bacteria, S – protists, T – plants, U – animals
C. R – protists, S –
animals, T – bacteria, U – plants
D. R –
plants, S – animals, T – bacteria, U – protists
Obviously neither animals or plants were the first to evolve, so we can strike out options A and D.
Animals evolved before bacteria, which means option C is incorrect. Leaving just the correct answer of option B.
1) When describing Interferon, is it ample to say that it just 'slows the spread of viral particles through the use of antiviral enzymes and recruitment of natural killer cells'?
Yeah, I'd say that's enough (interferon is actually really cool if you ever have time to learn more about it haha)
But you're transcribing the complementary sequence of the original DNA sequence right? Not the original sequence.
Is this a VCAA question?
I agree with you that the way they've worded it (with the part about it being the complementary strand that is being transcribed) that the answer should be B.
I'm pretty sure that I've answered all the questions that got missed earlier, let me know if I skipped any