Why Might a Parent Cell Undergo Mitosis in a Multi-

question 62

Multiple Choice

Why might a parent cell undergo mitosis in a multi- cellular tissue?

• A) Cyclins are not phosphorylated.
• B) Parent cell needs to replace nearby cells that have performed apoptosis.
• C) Parent cell is damaged and needs to perform apoptosis.
• D) Growth factor concentrations are low.
• E) Parent cell needs to out- compete other cells around it for resources.

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Definitions:

Embryo

An early stage of development in many animals, including humans, when it is in the uterus or egg, characterized by rapid cell division and differentiation.

Viruses

Microscopic infectious agents that replicate only inside the living cells of an organism, capable of causing diseases in humans, animals, and plants.

Adolescence

The transitional stage of physical and psychological development that occurs between childhood and adulthood.

Late Adulthood

The stage in human development characterized by advanced age, usually considered to begin around the age of 65.