Biology Quiz

What is the definition of homeostasis?

• Movement of molecules from high concentration to low concentration

• Maintaining a stable internal environment

• A group of cells that work together

• The brain and spinal cord

Which term describes the movement of water molecules from high to low concentration?

• Diffusion

• Hypertonic

• Osmosis

• Isotonic

What is the role of a neurotransmitter?

• A nerve cell

• A chemical substance that relays a message from neuron to neuron

• The part of a neuron that carries impulses

• A coating around the axon

Which system includes the brain and spinal cord?

• Peripheral Nervous System

• Central Nervous System

• Endocrine System

• Digestive System

What is the role of a motor neuron?

• Senses a stimulus

• Causes the reaction

• Relays a message from neuron to neuron

• Maintains a stable internal environment

What is the function of an axon?

• A nerve cell

• The branches of a neuron that receive information

• The part of a neuron that carries impulses

• A coating around the axon

What is the role of a hormone in the body?

• To digest food

• To act as the body's chemical messengers

• To store energy

• To transport oxygen

Which hormone is responsible for reducing blood sugar levels?

• Glucagon

• Adrenaline

• Insulin

• Cortisol

What is the primary function of the pancreas?

• To filter toxins from the blood

• To create digestive enzymes and regulate blood sugar

• To store vitamins

• To produce red blood cells

Which organ is responsible for creating bile for digestion?

• Pancreas

• Stomach

• Liver

• Gallbladder