Chapter 4-Cell Structure
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Why is it advantageous for cells to be small?
It is advantageous for cells to be so small because they need to be able to maintain homeostasis through diffusion.
What occurs in the nucleolus?
Synthesis of rRNA and ribosome assembly
gap junction
allows of small molecules from cel to cell in a tissue
what are the functions of lysomes?
digest-worn-out organelles and cell debris; digest material taken up by endocytes
anchoring junction
intermediate filaments of cytoskeleton linked to adjoining cells through cadherins
tight junctions
tightly bound, leakproof, fibrous protein seal that surrounds cell
adherents junction
transmembrane fibrous proteins
surface markers
variable, integral proteins or glycolipids in plasma membrane
