Biological Inspiration from Battery Technology

Biology

An exploration of how the human heart and the electric eel function similarly to batteries through ion movement and electrical impulses.

Heart Electric Eel Bio-electricity

10 Questions Medium Ages 14+ Aug 26, 2026

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About this Study Set

This study set covers Biology through 10 practice questions. An exploration of how the human heart and the electric eel function similarly to batteries through ion movement and electrical impulses. Every question includes the correct answer so you can learn as you go — pick any format above to get started.

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Browse all 10 questions from the Biological Inspiration from Battery Technology study set below. Each question shows the correct answer — select a study format above to practice interactively.

1 What is the primary function of systole in the heart?

A Relaxation and filling
B Contraction and pumping
C Electrical signaling
D Valve closure

2 Which blood vessel carries oxygenated blood from the left ventricle to the body?

A Pulmonary artery
B Vena cava
C Aorta
D Capillary

3 What is the heart's natural pacemaker called?

A AV node
B Purkinje fibres
C Sinoatrial (SA) node
D Atrium

4 What is the purpose of the delay at the AV node?

A To speed up the heart rate
B To allow atria to finish emptying
C To prevent blood clots
D To stop the heart from beating

5 What kind of cells produce electricity in an electric eel?

A Neurons
B Electrocytes
C Muscle fibers
D Epithelial cells

6 Which organ in the electric eel is primarily used for electrolocation?

A Hunter's organ
B Main organ
C Sachs' organ
D Stomach

7 Which ion is responsible for creating a voltage across the electrocytes?

A Calcium (Ca2+)
B Potassium (K+)
C Sodium (Na+)
D Magnesium (Mg2+)

8 What protein helps control the ion machinery for high-voltage discharge in eels?

A Hemoglobin
B Calmodulin
C Insulin
D Keratin

9 What is the main difference between oxygenated and deoxygenated blood?

A Temperature
B Sugar content
C Oxygen/CO2 levels
D Size of cells

10 In which direction do Purkinje fibres conduct electrical impulses?

A From ventricles to atria
B From the apex upwards
C From the brain to the heart
D From the aorta to the lungs

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