sexual reproduction

Question 1

haploid and diploid cells

Answer 1

half the number of chromosomes

diploid double the number of chromosomes

Question 2

what are sex cells

Answer 2

haploid

Question 3

sperm adaptations

Answer 3

head mainly containing genetic material also contains digestive enzymes to digest the outer coating
midpiece contains lots of mitochondria

Question 4

look at penisand vagina diagram

Question 5

sexual intercourse steps

Answer 5

mans penis is erect when entering vagina
semen is ejaculated into the top of the vagina
semen goes through cervix and uterus into fallopian tube towards the egg
if the sperm meets an egg sperm burrows into it .

Question 6

fertilisation

Answer 6

fusion of haploid nuclei from male and female gamete.

Question 7

steps from fertilisation to having a baby

Answer 7

nuclei fuse together
restores chromosome number
new cell is a zygote
duplicates by mitosis and cell specialisation occurs. 
then embryo 
then foetus

Question 8

steps of the menstrual cycle

Answer 8

pituitary gland secretes FSH which causes maturity of the follicle
as it matures it secretes oestrogen which stimulates the uterus lining thickening it.
when oestrogen levels are high lh is secreted which causes the ovum to be released.
progesterone is released which maintain the thickness of the uterus lining.