Model Growth and Repair Processes Practice Test

Growth happens because body cells undergo meiosis to create new body cells for larger organs.

Cells throughout the body divide by mitosis to increase cell number, and some new cells differentiate into specialized bone, muscle, and other tissue cells needed for a larger body.

Bones lengthen mainly because existing bone cells enlarge; mitosis is not an important part of growth.

Differentiation alone causes growth by turning one existing cell into many different cell types without increasing cell number.