Question

how do cells respond if a complex organism is injured? (1 point)
cells form a blastocyst that contributes to the healing of the injury.
cells work to repair the injured area through meiosis.
nearby cells change into stem cells in order to repair the injury.
cells rush to the damaged area, proliferate through mitosis, and work to repair the injury.

Explanation:

• Option 1: A blastocyst is an early - stage embryo structure and not directly involved in the healing of an injury in complex organisms.
• Option 2: Meiosis is the process of cell division that produces gametes (sex cells) with half the number of chromosomes. It is not the process for tissue repair.
• Option 3: In complex organisms, it is not a common mechanism for nearby cells to change into stem cells for injury repair in the way described.
• Option 4: When a complex organism is injured, cells rush to the damaged area. Mitosis is the process of cell division for growth and repair. Cells proliferate through mitosis to replace damaged cells and work to repair the injury.

Answer:

Cells rush to the damaged area, proliferate through mitosis, and work to repair the injury.