Which of the following cell is visible to human eye?
Sperm cell
Blood cell
Smooth muscle cell
Egg of ostrich
The egg of ostrich is very large and easily visible to human eye.
Make a sketch of the human muscle cell. What function do muscle cells perform?
Which of the following statements are true?
Single-celled organisms consist of many cells.
Nerve cell is the longest cell in human body.
Muscle cells are long and contractile to pull or squeeze the body parts.
The size of the organism is often related to the shape of the individual cells.