Wednesday, 20 February 2013

2.25 understand that energy requirements vary with activity levels, age and pregnancy

As a young person a lot of energy is used because: activity levels tend to be high; energy is being used for growth. As a person ages they no longer use energy for growth and tend to have a less active lifestyle: thus having lower energy requirements.

Having a less or more active lifestyle has an effect because the more you do- the more energy you use- the more you need- the higher energy requirements. For example, an athlete has a more active lifestyle so has to eat more.

When pregnant a woman is not only supporting her own body but also that of her baby, this mean she requires the energy for both of them, increasing her energy requirements.

16 comments:

  1. This comment has been removed by the author.

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    1. Hahaha I'm glad you like it- hope it helped :)

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    2. you are copy pasting this same quote

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    3. Thanks for putting this up :)

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    4. ahahahah ^^^ good on you hannah - much love for everything

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  2. this is an amazing website so useful!!!

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  3. I have read quite a lot of your posts on Paper 2 iGCSE Biology and I see a lack of biological terminology and that is the thing which will get you extra marks. Showing the examiner that you understand what are talking about and are confident in your answers will impress them and will encourage them to give you the marks

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    1. well she got an A* so it seems to work

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    2. Not all examiners are the same, some are harsher than others and some are more generous than others. If you were to use no biological terminology and your marker was harsh, he could possibly mark you down. That could be the difference between an A or and A*or a B or an A so it is important to use biological terminology and answer your questions in depth to secure those full marks. So even if you had a harsh marker, because you used biological terminology and gave your answers in depth you would get full marks.

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  4. this is such an amazing thin u have done hannah!! I've come across your blog so many times when revising and I didn't bother looking at it as i thought it was a blog with a bit of info on it, I recently came across it again and find it so helpful especially chemistry as my teacher is awful! Thank you so so so much xx

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  5. thank you so much for this blog! i used it for all my science gcse exams and it helped me so much :) it is so easy to understand and covers absolutely everything!! thanks again xx

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  6. The Biology Syllabus has changed.... New Syllabus Blog:

    http://igcse-biology-2017.blogspot.hk

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  7. more at

    http://igcse-biology-notes.blogspot.hk/2017/06/225-understand-that-energy-requirements.html

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