Answer: Nerve cells.
- A Muscle cells
- B Nerve cells
- C Skin cells
- D Liver cells
Correct answer: B. Nerve cells
Explanation: Nerve cells (neurons) are the longest human cells; some run over a metre from the spinal cord to the toe.
Animal cell structure with major organelles labeled. Image: LadyofHats (Mariana Ruiz), Public Domain, via Wikimedia Commons.
Concept context
Cell theory, prokaryotic vs eukaryotic cells, organelles and their functions. Foundation of all biology.