Protein-Mediated Transport Video Lessons

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Problem: Which transport systems utilize a chemical reaction for the energy source? a. the glucose-Na+ transporter of intestinal epithelial cells b. the glucose transporter of erythrocytes c. the Ca2+ ATPase of the sarcoplasmic reticulum d. the amino acid-Na+ transporter of kidney cells e. the Na+/K+ ATPase of plasma membranes

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Glucose-Na+ Transporter: symport for glucose and Na+; uses a Na+ gradient to transport both molecules

Glucose Transporter: uniport for glucose; uses a glucose gradient

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Problem Details

Which transport systems utilize a chemical reaction for the energy source? 

a. the glucose-Na+ transporter of intestinal epithelial cells 

b. the glucose transporter of erythrocytes 

c. the Ca2+ ATPase of the sarcoplasmic reticulum 

d. the amino acid-Na+ transporter of kidney cells 

e. the Na+/KATPase of plasma membranes

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