Which of the cells below normally possess a relatively high level of mitotic activity?
A)stem cells of various adult tissues
B)hematopoietic stem cells that give rise to red and while blood cells
C)stem cells at the base of numerous epithelia that line the body cavities
D)the relatively unspecialized cells found near the tips of plant roots and stems
E)All of these are correct.

Question

Quizplus · Accepted Answer

All of the cells listed normally possess a relatively high level of mitotic activity as they are involved in the continual replenishment and growth of tissues. Stem cells, in particular, are responsible for maintaining the pool of dividing cells, and as such, have a high level of mitotic activity in comparison to more differentiated cells. Hematopoietic stem cells give rise to all blood cells, and those at the base of epithelia that line the body cavities are responsible for continual cell turnover to maintain tissue function. The relatively unspecialized cells found near the tips of plant roots and stems are also involved in continuous growth and differentiation of plant tissues, and therefore exhibit high levels of mitotic activity.

Which of the Cells Below Normally Possess a Relatively High