In a giant squid axon, external stimulation opens some Na+ c…
In a giant squid axon, external stimulation opens some Na+ channels, allowing Na+ ions to move into the cell, which causes depolarization of the membrane. If depolarization passes the threshold -50 mV, ______ will be triggered to open.
Read DetailsThe extracellular amorphous ground substance proteoglycans f…
The extracellular amorphous ground substance proteoglycans form a porous, hydrated gel that fills the extracellular space and resists crushing forces. This is because the glycosaminoglycan chains of proteoglycans contain ________ and ________ groups that bind large numbers of cations, which in turn bind a large number of water molecules.
Read DetailsLaminins are extracellular glycoproteins that greatly influe…
Laminins are extracellular glycoproteins that greatly influence cell’s potential for migration, growth, and differentiation by binding to ________. a. other extracellular matrix componentsb. cell surface receptorsc. cytoplasmic receptorsd. ribosomese. cytoskeleton
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