GCSE AQA Biology Chapter 10.1 - 10.3

Homeostasis is best described as...

• controlling themselves

• constantly controlling their external environment

• constantly controlling their internal environment

Homeostasis controls our internal body for what duration in a day?

• 12 hours

• 24 hours

• 10 hours

• 2 hours

What does homeostasis control?

• water, sugar and temperature

• water only

• skin tone

• none of the above

What type of impulse is passed through nerves?

• Chemical

• Chemical and electrical

• Electrical

Where are synapses found?

• CNS

• Receptors

• Skin

What is the role of neurotransmitters?

• Move across a synapse

• Move through a neurone

• Move through a neurone and synapse

• None of these

A reflex reaction will always go to the brain

• True

• False

• Sometimes

Reflexes are a way of protecting the organisms (living thing)

• Yes

• No

• Sometimes

The nerves contain lots of mitochondria

• Yes

• No

Neurotransmitters move across the synapse by what method?

• Active transport

• Osmosis

• Diffusion