S2 Biology - Responding to Change

What is the primary function of the nervous system?

• To digest food

• To regulate hormones

• To coordinate body activities

• To circulate blood

Which part of the brain is responsible for regulating body temperature?

• Cerebellum

• Medulla oblongata

• Hypothalamus

• Cerebrum

What type of neuron carries signals from the brain to muscles?

• Sensory neuron

• Motor neuron

• Interneuron

• Efferent neuron

What is the role of synapses in the nervous system?

• To carry electrical signals

• To connect neurons

• To transmit hormones

• To produce neurotransmitters

What does homeostasis refer to in living organisms?

• Maintaining constant blood pressure

• Balancing body temperature

• Maintaining a stable internal environment

• Maintaining blood sugar levels

Which of the following is an example of negative feedback in the body?

• Sweating to cool down

• The release of adrenaline during stress

• The growth of a wound

• Eating when hungry

What is the role of the endocrine system in homeostasis?

• It sends electrical signals to muscles

• It releases hormones to regulate body processes

• It defends the body against pathogens

• It controls body temperature

How does the body respond to an increase in blood glucose levels?

• By decreasing insulin production

• By increasing insulin production

• By producing adrenaline

• By increasing blood pressure

Which organ plays a key role in regulating body temperature?

• Brain

• Skin

• Kidneys

• Heart

How does the body maintain a constant pH in the blood?

• By releasing oxygen

• By removing carbon dioxide

• By regulating water intake

• By adjusting hormone levels