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  1. omarjaved619

    Chemistry: Post your doubts here!

    HELP! River water in a chalky agricultural area may contain Ca2+ , Mg 2+, CO3 2–, HCO3–, Cl− and NO3– ions. In a water treatment plant, such water is treated by adding a calculated quantity of calcium hydroxide. What will be precipitated from the river water following the addition of calcium...
  2. omarjaved619

    Chemistry P52 GT

    No big planning question. No table calculations. Well played CIE.
  3. omarjaved619

    Chemistry P52 GT

    Doing years of past papers didnt help AT ALL. Went bad. Yep, didnt see it coming. ECF marks my only hope coz I'm not sure about my calculations.
  4. omarjaved619

    Chemistry: Post your doubts here!

    Have faith! All I'll suggest is do as many past papers as you can.
  5. omarjaved619

    Chemistry: Post your doubts here!

    Yes. Slope is the gradient. You can choose any two points which are sufficiently apart. The construction lines are just a big triangle against the line. Kinda like this...
  6. omarjaved619

    Chemistry: Post your doubts here!

    Ok so in a Paper 5 , in a planning question, they asked us to mention how we would dry the precipitate. In the Answer scheme, the gave a few methods along with "NOT heat or the use of a Bunsen..." The next question asked how we would ensure the precipitate was thoroughly dried. The answer went...
  7. omarjaved619

    Bio paper/42

    Ahh yes. DISCUSS.
  8. omarjaved619

    Bio paper/42

    Ohhh. the FSH. Dang. So how would it affect the spermatozoa? FSH in males, I was like wuuut.
  9. omarjaved619

    Bio paper/42

    2:30 AM here in KL. Off to sleep! Good luck guys
  10. omarjaved619

    Bio paper/42

    Triglycerides are a type of lipids I guess? The question stated that the Adipose tissue store a lotta fat in the form the triglycerides.
  11. omarjaved619

    Bio paper/42

    Oh yes yes. I put tri glycerides for that. Oh and I also put ATPase. Should be alright. BTW, 24-hour probation period still on right?:eek:
  12. omarjaved619

    Bio paper/42

    Yup. Right. For B I put inner membrane, and then I just wrote cristae besides it lol
  13. omarjaved619

    Bio paper/42

    Label A and B. by-product. and there was something else at the end.
  14. omarjaved619

    Bio paper/42

    Must be. 1 would use up energy. 2 would produce ATP. Sooo yeah.
  15. omarjaved619

    Bio paper/42

    Oh I chose 1 and 3. 3 coz it produced heat energy. Not sure about 1
  16. omarjaved619

    Bio paper/42

    D Dayum. I chose the outer membrane for the transport protein. You might have a point there.
  17. omarjaved619

    Bio paper/42

    Compare my statement with the Pacinian corpuscle example. Pacinian corpuscle detect change in PRESSURE. That pressure causes a receptor potential. If pressure is strong enough, action potential produced. Here, the rod and cones do the same job as Pacinian corpuscles. They detect LIGHT. If...
  18. omarjaved619

    Bio paper/42

    Optic nerve I mentioned the tumor blocking the light from entering the optical nerve. The receptor cells cant detect any light. Thus they dont pass any message to the brain.
  19. omarjaved619

    Bio paper/42

    Exactly. I dont remember RECESSIVE written in bold for the genetic diagram question. BUT, RECESSIVE was in bold for the Xoo question
  20. omarjaved619

    Chemistry: Post your doubts here!

    Drawing with pencil is optional right? Or is it a must?:eek:
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