DP Biology (last assessment 2024)
Question 17N.2.HL.TZ0.b
| Date | November 2017 | Marks available | [Maximum mark: 8] | Reference code | 17N.2.HL.TZ0.b |
| Level | HL | Paper | 2 | Time zone | TZ0 |
| Command term | Compare and contrast | Question number | b | Adapted from | N/A |
b.
[Maximum mark: 8]
17N.2.HL.TZ0.b
Cell biologists play an important role in research into disease, fertility, evolution and many
other areas of science.
Compare and contrast the processes of spermatogenesis and oogenesis.
[8]
Markscheme
a. both result in haploid cells/gametes
b. both involve mitosis at the start/in the «germinal» epithelium
c. both have cell growth «before meiosis»
d. both involve «two divisions of» meiosis
e. both involve differentiation to produce a gamete
f. both are stimulated by hormones
OR
spermatogenesis stimulated by testosterone and oogenesis stimulated by FSH
A table is not required but both statements in one row of the table must either be explicitly stated or clearly implied to award the mark
[Max 8 Marks]
