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Protein carrier molecules

Can anyone help me with this question please:

Glucose, and no other sugar, is transported into cells by protein carrier molecules in the cell surface membrane. How do the carrier molecules specifically recognise glucose?

kieshaxxx

Can anyone help me with this question please:

Glucose, and no other sugar, is transported into cells by protein carrier molecules in the cell surface membrane. How do the carrier molecules specifically recognise glucose?

I am not totally sure, but I am guessing that Glucose can 'fit' into the carrier molecule, almost like in ESCs; The Lock and Key hypothesis. Glocose has a unice molecular "shape" and the carries probable has a corresponding "hole" which is "filled" by a molecule of this shape.

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