Question

Which of the following human cells is motile?

• A. Nerve cell
• B. Cutaneous cell
• C. Egg cell
• D. Sperm cell

Hint:

Sperm cells are the only motile cells in the human body, designed to travel towards the egg for fertilization.

Answer 1

The Correct Option is D

Step 1: Understand cell motility.
Motility refers to the ability of a cell to move or propel itself. Among human cells, motility is primarily observed in sperm cells, which move through the reproductive system to fertilize an egg.
Step 2: Review the options.
- Nerve cells are not motile; they transmit signals but do not move. - Cutaneous cells are skin cells and do not exhibit motility. - Egg cells are large and immobile, relying on sperm for fertilization. - Sperm cells are the only motile cells in the human body, using their tail (flagellum) to swim.
Step 3: Conclude.
Sperm cells are motile, making option (D) the correct answer.
Final Answer: \[ \boxed{\text{Sperm cell}} \]