No, xylem cells do not undergo cell division. They are specialized cells for water and nutrient transportation in plants and once they mature, they lose the ability to divide.
No, the spleen does not produce mature T-cells. T-cells mature in the thymus gland, not in the spleen. The spleen's main role is in filtering blood, storing red blood cells, and acting as a reservoir for immune cells.
False. The woody cells of a tree are primarily formed from living cells called cambium that produce new layers of xylem and phloem, which then become part of the tree's structure as they mature and lignify. Wood cells themselves are actually dead at maturity and provide structural support to the tree.
Almost every cell (living or dead) contains DNA. There are a few very rare exceptions, including mature mammalian red blood cells (erythrocytes), which lose their contents to maximise oxygen carrying capacity. Young erythrocyte precursor cells, that will later become mature red blood cells, will contain DNA, as do red blood cells of other organisms (other than mammals).
Stem cells
Water-conducting cells
No, mature phloem tissue is not dead upon maturity. Phloem tissue remains alive and functional, aiding in the transport of sugars and other organic compounds throughout the plant. The cells in mature phloem tissue are specialized for this function and typically stay alive for an extended period.
Cork is the outer protective tissue of older stems and roots. The mature cork cells become dead and filled with tannis, resins and air.
I'll Mature When I'm Dead was created in 2010.
They are made in the bone marrow, but B cells mature in the spleen and T cells mature in the thymus.
No, xylem cells do not undergo cell division. They are specialized cells for water and nutrient transportation in plants and once they mature, they lose the ability to divide.
No, the spleen does not produce mature T-cells. T-cells mature in the thymus gland, not in the spleen. The spleen's main role is in filtering blood, storing red blood cells, and acting as a reservoir for immune cells.
T cells mature in the thymus, a specialized organ located in the chest. In the thymus, immature T cells differentiate into mature T cells through a process of selection and education.
False. The woody cells of a tree are primarily formed from living cells called cambium that produce new layers of xylem and phloem, which then become part of the tree's structure as they mature and lignify. Wood cells themselves are actually dead at maturity and provide structural support to the tree.
Undifferentiated means lacking structures typical in mature cells.
I believe it's immature bone because it has the mesenchyme cells, osteoprogenitor cells and osteoblasts. While mature bone has the osteocytes.
Almost every cell (living or dead) contains DNA. There are a few very rare exceptions, including mature mammalian red blood cells (erythrocytes), which lose their contents to maximise oxygen carrying capacity. Young erythrocyte precursor cells, that will later become mature red blood cells, will contain DNA, as do red blood cells of other organisms (other than mammals).