Question 21M.2.SL.TZ1.c
| Date | May 2021 | Marks available | [Maximum mark: 7] | Reference code | 21M.2.SL.TZ1.c |
| Level | SL | Paper | 2 | Time zone | TZ1 |
| Command term | Compare and contrast | Question number | c | Adapted from | N/A |
Compare and contrast hormonal and nervous communication.
[7]
Similarities
a. both used for communication between cells/tissues/organs/parts of the body / WTTE ✔
b. both cause a response/change in specific/target cells
OR
both use chemicals that bind to receptors / hormones and neurotransmitters are both chemicals ✔
c. both can stimulate or inhibit (processes in target cells) / WTTE ✔
d. both can work over long distances/between widely separated parts of the body / WTTE ✔
e. both under (overall) control of the brain/CNS / brain (has role in) sending hormones and nerve impulses ✔
f. both use feedback mechanisms/negative feedback / both used in homeostasis ✔
Differences
m. example of use of hormonal and use of nervous communication ✔
Weaker candidates found this a real challenge as it was necessary to understand the nature of the nervous and endocrine systems well enough to be able to point out similarities and differences. Often there was no obvious comparing or contrasting in the answers.
