Homeostasis and response
Coordination and control - The nervous system - AQA
The nervous system enables humans to react to their surroundings and to coordinate their behaviour. It comprises millions of neurones and uses electrical impulses to communicate very quickly.

QUIZ: The nervous system
This interactive quiz is suitable for GCSE Biology (single science) students studying the nervous system and how it enables humans to coordinate movement.

Coordination and control - The human endocrine system - AQA
The endocrine system secretes hormones into the bloodstream from glands throughout the body. Hormones produce an effect on specific target organs in the body.

QUIZ: The human endocrine system
This interactive quiz is suitable for GCSE Biology (single science) students studying the human endocrine system and the role hormones play.

Hormones in human reproduction - AQA
Hormones are secreted by glands in the endocrine system. During puberty, hormones create changes in physical and emotional characteristics.

QUIZ: Hormones in human reproduction
This interactive quiz is suitable for GCSE Biology (single science) students studying the role hormones play in human reproduction.

QUIZ: Sexual and asexual reproduction
This interactive quiz is suitable for GCSE Biology (single science) students studying sexual and asexual reproduction in humans, animals and plants.

Homeostasis in humans - AQA
Homeostasis is the regulation of internal conditions inside cells or organisms, to create the optimum conditions for biological function.

QUIZ: Homeostasis in humans
This interactive quiz is suitable for GCSE Biology (single science) students studying homeostasis and how important it is to regulation of the body.

Plant hormones - AQA
Hormones promote growth within plants. Plant hormones are unequally distributed throughout the stems and roots, which results in parts of the plant growing in a particular direction.

QUIZ: Plant hormones
This interactive quiz is suitable for GCSE Biology (single science) students studying hormones and how they promote growth in plants.

Sample exam questions - homeostasis and response - AQA
Understanding how to approach exam questions helps to boost exam performance. Question types will include multiple choice, structured, mathematical and practical questions.

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