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    May 2012
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    India
  1. What you are saying is correct.. This is one way that plants do take up some minerals but not K+ ions.. It's clearly mentioned is some IB books (IB study guide by Andrew Allott + a green book by Peeters from the IPID press) that potassium, phosphate and nitrates are actively transported into the roots due to there low concentration in the soil.. They do generally accept different answers.. I hope this year they will accept different interpretations to the graphs.. yes!that's what i want.. different interpretations to the graphs... even i wrote that but i'm not sure if it's sufficient for tho
  2. K+ ions are mostly taken by the root via active transport but sometimes it can be absorbed by simple diffusion so the answer is active transport.. for the importance of vascular bundle I'm not really sure but this is what I wrote: if a plant has the bundle then it can grow taller since it ca transport food + water from one place to the other. In addition by being able to transport stuff then some organs can differentiate to produce sugar (source) while other can turn into storage organs (sink). Thirdly I said that both Xylem & phloem are cover with legnin which is strong and contributes to
  3. In paper 1, what was the answer for that soil and mineral thing? The K+ ions were supposed to move by which transport method??? I think it was either active transport or simple diffusion, and i remember they had mentioned MOSTLY in the question, but not sure, what was the answer? Also, in paper 2, Sec A, i guess it was the last question where they asked something about the importance of vascular bundle, the xylem and phloem thing, and it was 3 marks. What all we had to write for those 3 marks? Can someone please tell me the total marks for Sec A, Q1, data based? Thank you and all the best
  4. Ahh...it was C I think...The diapraghm contracts and causes inhalation... And I don't the pic had anything to do with the question, it was which of the multiple answers correctly described the function of the diaphragm..... yup! diaphragm contracts to cause inhalation- definitely correct, i checked after the exam to be sure Oh thankssss! Yes! yes! Awesome! Was section A data response only 7 marks in total?? Because even i have messed up that!
  5. What was the answer for that diaphragm figure?? That was the only question i am not sure about! Is anyone completely sure about that answer? did they say that answer according to the diagram? Because there it was relaxed, but i wrote the answer as the C i guess, it was the one involving contraction of the diaphragm, nothing else made sense to me. Please tell what did you people choose for that?
  6. yes i did that. And talked about that yes, all about the forces of attraction in water, the transpiration pull, evaporation, transpiration stream and the xylem vessels. I'm pretty sure about that answer of mine.. Yup.. it was D..yipee.. The clonal selection was D i don't really remember. The answer is about a specific B or T cells being cloned.. When the macrophage engulfs a pathogen it presents a part of its antigen so a specific B or T cell would recognize it and clone itself several time and that is called clonal selection.. YES! Thats a clonal section, right! It cannot be D..chromos
  7. Plasmid thing i wrote option C , that was plasmid is a circular structure which helps prokaryotes transfer their genetic material,,something like that! The sperm thing i'm not sure..i had not studied reproduction that much! SERIOUSLY! I have still not been able to figure out what exactly the data based was! Past papers data based are much easier.. Our's was so confusing. God only save me for that question. Everything else was good though.
  8. If there would be no drugs, taking "placebo" , then how come faster the macrophage response? I struggled with the data based, seriously!
  9. Hey! How was the paper? I found P1 very easy... P2 was tough! Section A data based question was confusing and section B also there wasn't a single diagram question but it was ok...! How was it for everyone?
  10. SO true!!!!! Not a single diagram question!!!!!
  11. Haha Fleming, Florey and Chain! I was revising for M&D by going through the syllabus and it specifically mentioned about the development of penicillin, so I'm glad I did okay on that question Tricky, IB. P1 was awful! I think I probably scored a 3 if I'm lucky. P2 was okay, around the 4-5 band I think and P3 was incredibly easy! I'm aiming for a 7 for that one. I did Biochemistry and M&D, both of which were very generous in giving out a lot of freebie questions. Haha I did 7 and 8! Even question 10 was really easy, I wish they removed that radioisotope question in section A and made
  12. Hi, I'm HL too... Paper 3 was awesome! Yes, they did ask about fleming, florey and chain..but i had read that once, so remembered it...Paper 2, Section A was tough i guess, especially the first question, but overall it was good. Paper 1! God! Don't know what i have done, yes it was not so easy! I just hope i get 30+ on 40 anyhow... How much do you think you'll get in paper 1? And which two questions did you all choose for section B, paper 2? i did, 7 and 10 , and i guess 7 was quite easy! No one in my class did question 8, did any of you opted for 8? It was terrible...thank god i didn't do! An
  13. Hi, I'm HL too... Paper 3 was awesome! Yes, they did ask about fleming, florey and chain..but i had read that once, so remembered it...Paper 2, Section A was tough i guess, especially the first question, but overall it was good. Paper 1! God! Don't know what i have done, yes it was not so easy! I just hope i get 30+ on 40 anyhow... How much do you think you'll get in paper 1? And which two questions did you all choose for section B, paper 2? i did, 7 and 10 , and i guess 7 was quite easy! No one in my class did question 8, did any of you opted for 8? It was terrible...thank god i didn't do! An
  14. I think I got the same Even i got the same..!
  15. Did someone get the answers for Paper 2 TZ2, Question 9 and 10???? Paper 2, Section B was bad! Pls reply, i am waiting for the answers..
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