Question

this passive system is mediated by a family of 14 glucose transporter (glut) isoforms found in cell membranes, designated glut - 1 to glut - 14. na and atp - dependent transport system na and atp - independent cotransport system both nota

Explanation:

Step1: Identify the transport type

The passage mentions a passive system mediated by glucose transporters. Passive transport does not require ATP. GLUT transporters are facilitative transporters and are Na - independent. So it is a Na and ATP - independent cotransport system.

Answer:

B. Na and ATP - independent cotransport system