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Glucose and epithelial cells

Debate and discussion of any biological questions not pertaining to a particular topic.

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Glucose and epithelial cells

Postby jsmith613 » Wed Nov 10, 2010 10:18 pm

does glucose enter the epithelial cell against the concentration gradient and sodium ions down the concnetration gradient?

if not, what happens?

My book says
"It is the sodium conc. gradient rather than ATP directly that powers the movement of glucose into the cells" - surely this implis active transport (it is actually quoted as indirect active transport)

But they say that
the movement of glucose molecules move into the epithelial cell via passive transport.

Surely this is contradictory

further more this video clarifies my point:
http://bcs.whfreeman.com/thelifewire/co ... 02002.html

BUT the answer is passive transport to the question "how does glucose enter the epithelial cell" - why
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