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Biology · Oct / Nov 2023 · Paper 41 · Question 1

0610

As printed in the paper

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  • 1(a)(i)[2]

    Y is FSH ;

    Z is LH ;

  • 1(a)(ii)[2]

    line drawn:

    low until day 14 ;

    increasing until day 21, then a decrease ;

  • 1(a)(iii)[1]

    14 ;

  • 1(a)(iv)[1]

    placenta ;

  • 1(b)[4]

    Step 1: 0.029 (mm) ;

    Step 2: 75 762 ;;

    Step 3: 75 800 (%) ;

  • 1(c)[3]

    any three from:

    flagellum ;

    (many) mitochondria ;

    acrosome (containing enzymes) ;

    haploid (nucleus) / AW ;

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