All Leaving Cert Biology posts
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    edco exam papers lcstudent

    can anyone tell me the code for the examit for 2015 q14 part c

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      bridgetown1

      Only tricky bit is (iv).

      (iv) 1. As it needs a lot of energy to travel the long distance through cervix and uterus up to fallopian tube.

      2. Only the head of the sperm enters the egg. Therefore all the mitochondria in the neck of the sperm are left outside the egg. The mitochondria in the zygote are, therefore, inherited exclusively from the mother.

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      bridgetown1

      In (v) the question referred to survival TIMES (plural!). If only one time was given it was assumed it referred to the egg, the first gamete mentioned ion the question.

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      Me

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