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  1. T

    Multiple Choice

    the whole focus of that healthy aging topic was on improving quality of life and maintaining productivity for the elderly so it would be b not d because that's talking about early adulthood not the aging population
  2. T

    Thoughts?

    i wasn't sure but i think it is power becuase it wasn't very heavy but it was fast
  3. T

    Multiple Choice

    yeah i did delayed, knowledge of results for that one because she wasn't checking as she was running just afterwards
  4. T

    Multiple Choice

    nice thats what i did
  5. T

    Multiple Choice

    for the inverted u hypothesis did people do a or b. i think it was like as optimal arousal increase, performance increases or there is a level of arousal for optimal performance or something like that
  6. T

    Multiple Choice

    i did unwillingness to seek medical assisatnce for males with lower health because of the 'earlier in life' sounded wrong
  7. T

    Thoughts?

    in the last minute i changed 19 to b cause i think it makes more sense to have breaks in practice but im not really sure and is anticipation learnt in the autonomous stage?
  8. T

    Thoughts?

    ooh! yeah i wrote about like prevalence and incidence and quality of life cause i actually had no idea
  9. T

    Thoughts?

    What is an indicator of morbidity??
  10. T

    series question

    A lamb grows by 2/5 of its previous growth each month. If a lamb is 45cm tall, a) how tall will it be after 6 months? i keep getting like 388 for part a but when you do the limiting sum to see its final height i get 75 can any help pleaseee
  11. T

    Thoughts: CSSA English Paper 1

    i thought the creative writing images where waay to limiting! But in was happy with the essay question and the unseen texts especially the last poem!
  12. T

    integrating an exponential

    hi, how would you integrate: e^(3x) + 1/e^(2x) e to the power of 3x then plus 1, all divided by e to the power of 2x i separated the terms so it was e^(3x)/e^(2x) + 1/e^(2x) but im not sure how to go about integrating e^(3x)/e^(2x) thankyouu and can you please show working
  13. T

    exponential growth and decay

    for the first question i dont really understand why the +1 isn't a power any more, in the question i didn't really write this clearly but its y=4^(x+1) if that changes anything? and with the second question i had the first bit you wrote its just after that im struggling with the differentation...
  14. T

    exponential growth and decay

    thankyouu I have some more 1. Find the equation of the tangent to the curve y=4^x+1 at the point (0,4) 2. Find the equation of the normal to the curve y=log3x at the point where x=3 3. find the exact volume of the solid formed when the curve y=logex is rotated about the y axis from y=1 to y=3 4...
  15. T

    exponential growth and decay

    1. The half life of radium is 1600 years. a) find the percentage of the radium that will be decyaed after 500 years b) find the number of years that it will take for 75% of the radium to decay. For a i got 80.5% as an answer but for the correct answer you need to minus this from 100% and i...
  16. T

    rhodopsin

    no, whats that?
  17. T

    rhodopsin

    I dont understand how rhodopsin is sensitive to blue light yet they are located in rods which cant detect colour and only use shades of grey, black and white? can anyone explain this pleassee
  18. T

    Transgenics

    Do you need to know the actual process of the polymerase chain reaction thats makes numerous copies of recombinant DNA in transgenic species.
  19. T

    Answer writing

    Does anyone have a structure the follow when answering questions in biology like SEXY(state, explian, example, why) or PEEL(point, evidence, example and link)??
  20. T

    Concavity graph

    Is a concave down graph shaped like an unhappy face and concave up shaped like a happy face? Because in the text book it says y">0 the curve is concave up, so the graph should look like a happy face before x=1 and then look like an unhappy face after x=1? because when i drew that it was he same...
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