Saturday, 23 February 2013

2.79 understand that a coordinated response requires a stimulus, a receptor and an effector

To be able to carry out a response several things are needed:
A stimulus- a change in the internal or external environment- is needed to prevoke a response.
A receptor is needed to detect a stimulus, so that it can send messages to a coordinator to coordinate a response,
An effector is needed to carry out the response to the stimulus.
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6 comments:

  1. sophie:)13 October 2014 at 13:06

    how did you get the specification answers?

    ReplyDelete
  2. Anonymous4 April 2015 at 02:38

    she got it from research- you can get this info from textbooks/internet etc

    ReplyDelete
  3. Unknown21 April 2015 at 09:12

    *provoke

    ReplyDelete
  4. Mike Tsang26 June 2017 at 03:15

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

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

    ReplyDelete
  5. SophieRice26 June 2017 at 18:31

    more at

    http://igcse-biology-notes.blogspot.hk/2017/06/279-understand-that-coordinated.html

    ReplyDelete

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