Hormones and Their Functions

What is a hormone?

• A protein in the blood

• A nerve signal

• A chemical messenger produced by glands

• A type of enzyme

Which gland produces insulin?

• Liver

• Pancreas

• Adrenal

• Thyroid

What is the main function of insulin?

• Raise heart rate

• Regulate blood glucose levels

• Control sleep cycles

• Break down protein

Where is testosterone produced?

• Brain

• Adrenal glands

• Testes

• Pituitary gland

Which hormone is responsible for female reproductive development?

• Testosterone

• Adrenaline

• Oestrogen

• Glucagon

What effect does adrenaline have on breathing rate?

• No change

• Slows it down

• Increases it

• Stops it

Which hormone causes increased heart rate and energy availability in emergencies?

• Glucagon

• Cortisol

• Adrenaline

• Insulin

What happens to pupils under the effect of adrenaline?

• They shrink

• They close completely

• They dilate

• They turn red

How do hormones recognize their target cells?

• Blood pressure

• Enzymes

• Specific receptors

Which of the following is an example of negative feedback?

• More hormone is released when needed

• Increased hormone level leads to reduced production

• Hormone production continues forever

• Hormones randomly affect cells