Question

which of the following is true about cell differentiation when the body tries to heal from an injury? (1 point)
platelets express different sections of rna in order to create skin cells.
stem cells differentiate to provide specialized cells that replace damaged tissue.
cells grow during the synthesis phase of the cell cycle in preparation for senescence.
damaged cells proliferate until the wound heals.

Explanation:

• Platelets are involved in blood clotting, not in creating skin cells.
• Stem cells have the ability to differentiate into various specialized cell types. When there is an injury, stem cells can differentiate to provide specialized cells that replace the damaged tissue.
• The synthesis phase of the cell cycle is for DNA replication, not directly related to cell differentiation during injury - healing in the context of the question. Also, senescence is cell aging, not relevant here.
• Damaged cells do not proliferate in a healthy healing process in the way described. It is usually the undifferentiated or less - differentiated cells (like stem cells) that give rise to new cells.

Answer:

Stem cells differentiate to provide specialized cells that replace damaged tissue.