Question 17N.2.SL.TZ0.06b
| Date | November 2017 | Marks available | [Maximum mark: 8] | Reference code | 17N.2.SL.TZ0.06b |
| Level | SL | Paper | 2 | Time zone | TZ0 |
| Command term | Explain | Question number | b | Adapted from | N/A |
Reproduction in eukaryotes can be sexual or asexual.
Explain how hormones are used to control the human menstrual cycle.
[8]
a. FSH stimulates the development of follicles
b. follicles produce estrogen
c. estrogen stimulates the repair of the uterus lining
d. estrogen stimulates LH secretion
e. LH causes/stimulates ovulation
f. LH causes/stimulates the development of the corpus luteum
g. corpus luteum secretes progesterone
h. progesterone causes/stimulates thickening of the uterus lining
OR
prepares uterine lining for implantation
OR
maintains the endometrium
i. progesterone/estrogen inhibits the secretion of LH/FSH
j. falling progesterone levels at the end of the cycle allow FSH production/menstruation
k. negative/positive feedback «control» described correctly
l. LH/FSH are pituitary hormones
[Max 8 Marks]
