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- Why do cells of thenephron tubules present agreat amount ofmitochondria?Describe the structural characteristics of cells that are highly specialized todo the following: (a) synthesize and secrete proteins, (b) actively transportsubstances into the cell, (c) synthesize lipids, and (d) phagocytize foreignsubstances.How does a cell maintain theright amount of every component(organelles, molecules), and how doesit change these amounts as needed(for example, to greatly expand theendoplasmic reticulum when the cellneeds to produce large amounts ofsecreted proteins)?
- Which cells never undergo mitosis? What is the result oftissue damage in tissues such as these?Skin cells are constantly dividing. After every cell cycle, the newly divided cells are identical to the parent cell. O True O FalseAbiologist prepares a slide ofstained cells undergoing mitotic prometaphasefor examination undera light microscope. He sees several very dark stained rod – shaped structures in the cells. These “colored bodies” are most likely?