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    Can someone please clearly outline what each of these hormones do:
    - FSH
    - Oestrogen
    - LH
    - Progesterone

    In as much detail as possible because some places claim that the hormones do the same thing like LH and oestrogen apparently release the mature egg. Which one really does it?!! Also if oestrogen is supposed to limit FSH production then why in my graph does FSH reach its peak at the same time as oestrogen? They appear to mirror each other not stimulate or inhibit each other.
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    (Original post by dhruvap)
    An organism is given the insulin production gene via genetic engineering, it is done using an enzyme and allows the organism to produce insulin which can be later collected.
    Thought id add the plasmid is put into a bacteria cell
    and then it is reproduced
    hope this helped
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    What is a double-blind trial? What is a placebo?
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    Yeah, i decided to be generous with that question.

    (Original post by IAmAnTroll)

    Q: Discuss the issues surrounding contraceptive pills (advs + disadvs) 5 marks
    The pill has been proven to be over 99 percent effective at stopping a pregnancy, and it can also reduce some types of cancer, helping the woman's health.
    However, it still isn't 100% effective - there's still a slight chance of becoming pregnant. It can also cause strange side effects like nausea, headaches etc., though the progesterone-only pill reduces these. It also doesn't protect against STD's.

    2 adv, 3 disadv, should gain me 5 marks.
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    (Original post by Fractite)
    Describe how hormones can be used to increase fertility (4).
    FSH can be used to stimulate the ovaries to mature the egg and LH is used to stimulate the release of an egg. When this has happened, the egg will be collected and artificially fertilised in a test tube with sperm. Once the egg has been fertilised and the embryos are tiny balls of cells, one or two of them is transferred into the woman's uterus to improve the chance of pregnancy.
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    (Original post by dhruvap)
    Advantages:
    -Reduce unwanted pregnancy
    -Reduced risk of getting Cancer (not sure think i read it somewhere)
    -It is also very effective at being successful

    Disadvantages:
    -Opposed by religions
    -Not 100% effective (Slim chance)
    -There are possible side affects
    -Misconception that it protects against STDs
    Q: describe the process of fertility treatment (6 marks)
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    (Original post by JakeAntonyBrown)
    What is a double-blind trial? What is a placebo?
    a double blind trial is when both doctors and patient don't know who has taken the placebo or who has taken the actual drug- its to minimise the placebo effect
    a placebo, is meant to look, smell, taste and feel like the actual drug, but it does not contain any of the drug in it,
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    (Original post by JakeAntonyBrown)
    What is a double-blind trial? What is a placebo?
    A placebo is when a sugar-substitute of the drug being tested is used on patients/subjects to give the placebo effect.
    A double blind trial is when neither the doctor nor the patient knows about the placebo/real drug. This stops the doctor's conclusions being subconciously affected by their knowledge.
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    (Original post by AmirahxRashid)
    a double-blind trial is when both doctors and patient don't know who has taken the placebo or who has taken the actual drug- its to minimise the placebo effect
    a placebo, is meant to look, smell, taste and feel like the actual drug, but it does not contain any of the drug in it,
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    (Original post by JakeAntonyBrown)
    What is a double-blind trial? What is a placebo?
    A double-blind trial is a trial in which a group of healthy volunteers is split into 2 groups at random: one is given the drug that is being trialled, and the other group is given a placebo. Neither the patient OR the doctor is aware who has the placebo and who has the drug, to prevent the patient from thinking they feel better so recovering quicker, and to prevent the doctor's scientific knowledge unconsciously affecting the investigation. A placebo is a substance, tablet or injection, that looks exactly like the drug but has no effect on the body.
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    (Original post by JakeAntonyBrown)
    guessing I did well on that one
    A* im coming ur way!!!! lmfao
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    (Original post by Londonsfalling)
    Can someone please clearly outline what each of these hormones do:
    - FSH
    - Oestrogen
    - LH
    - Progesterone

    In as much detail as possible because some places claim that the hormones do the same thing like LH and oestrogen apparently release the mature egg. Which one really does it?!! Also if oestrogen is supposed to limit FSH production then why in my graph does FSH reach its peak at the same time as oestrogen? They appear to mirror each other not stimulate or inhibit each other.
    I remember the order of these by:
    FSH - First
    LH - Last
    So oestrogen must be in the middle
    Oestroygen begins with "o" so it is formed in the ovaries.
    This leaves both FSH and LH to be formed in the pituitary glands

    FSH matures the egg
    FSH stimulates the production of oestrogen

    Oestrogen inhibits the production of FSH
    Oestrogen stimulates the thickening of the lining of the womb
    Oestrogen stimulates the production of LH

    LH inhibits the production of oestrogen
    LH releases the egg

    Progesterone is given with oestrogen in the contraceptive pill.
    The oestrogen inhibits the production of FSH so no egg matures
    Progesterone can be given alone which reduces the side effects.
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    (Original post by Fractite)
    A placebo is when a sugar-substitute of the drug being tested is used on patients/subjects to give the placebo effect.
    A double blind trial is when neither the doctor nor the patient knows about the placebo/real drug. This stops the doctor's conclusions being subconciously affected by their knowledge.
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    Phototropism is when the plant grows towards the sun and geotropism is when it grows the opposite direction of gravity. Short but sweet


    q:What happens during the menstrual cycle? 6 mark
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    Discuss some advantages and disadvantages of vaccinations to protect against a disease (4)
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    (Original post by AmirahxRashid)
    guessing I did well on that one
    A* im coming ur way!!!! lmfao
    Yeah. That's a perfect answer...
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    How does the CNS play a part in the reflex action, whereabouts is it in the action? (im asking this question for real as i need help )
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    (Original post by Glenalmondboyy)
    Phototropism is when the plant grows towards the sun and geotropism is when it grows the opposite direction of gravity. Short but sweet


    q:What happens during the menstrual cycle? 6 mark
    The menstrual cycle takes 28 days
    Ovulation occurs about 14 days in
    FSH is made by the pituitary gland and causes the egg to mature and oestrogen to be produced
    Oestrogen is produced in the ovaries and inhibits the production of FSH, stimulates the womb lining to thicken and stimulates LH
    LH inhibits the production of oestrogen and releases the egg (the ovulation part)

    Q: What are cuttings in plants?
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    Explain in detail the carbon cycle, in full....

    This is most likely to be a 6 mark question.
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    (Original post by Elleee1234)
    what is metabolic rate
    the speed at which chemical reactions take place in the body
 
 
 
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