(a)[4]
Complete Table 4.1 by giving the letter and the name of each structure that carries out these functions.
(b)[2]
Fertilisation is the joining of the nuclei of a male gamete and a female gamete, producing a zygote. State the number of chromosomes present in a human: female gamete ………………… zygote …………………
(c)[3]
Describe the pattern shown by the data in Fig. 4.2.
(d(i))[1]
Suggest a treatment that can be used for chlamydia.
(d(ii))[1]
State the name of any other STI.
(e(iii))[3]
Complete the statements about how STIs spread. STIs are passed on through the transfer of …………………… during sexual contact. One way to reduce the spread of STIs is to use a …………………… type of contraception. One example of this contraception is …………………… .