This topic is included in A Level Paper 1 and Paper 3 for OCR Biology A.
Notes:
Questions by Topic:
5.1 Communication and Homeostasis
- Communication and Homeostasis MS
- Communication and Homeostasis QP
- Excretion 1 MS
- Excretion 1 QP
- Excretion 2 MS
- Excretion 2 QP
- Excretion 3 MS
- Excretion 3 QP
- Hormonal Communication 1 MS
- Hormonal Communication 1 QP
- Hormonal Communication 2 MS
- Hormonal Communication 2 QP
- Hormonal Communication 3 MS
- Hormonal Communication 3 QP
- Neuronal Communication 1 MS
- Neuronal Communication 1 QP
- Neuronal Communication 2 MS
- Neuronal Communication 2 QP
- Plant and Animal Responses 1 MS
- Plant and Animal Responses 1 QP
- Plant and Animal Responses 2 MS
- Plant and Animal Responses 2 QP
- Plant and Animal Responses 3 MS
- Plant and Animal Responses 3 QP
- Plant and Animal Responses 4 MS
- Plant and Animal Responses 4 QP