<prompt> Placenta to fetus glucose is transported by:EndocytosisActive transportFacilitated diffusionSimple diffusion  <response>: Ans. C Facilitated diffusionRef. Quantitative Human Physiology; An Introduction, pg. 126-27Since the transport of glucose to placenta is via GLUT, it is called a facilitated transfer of glucose. Simple diffusionFacilitated diffusionEnergyNot requiredNot requiredCarrier moleculeNot involvedInvolvedSaturationNot saturable No TmSaturable has a TmFollowsFicks law of diffusionEnzyme-substrate kinetics of Michaelis mentenExample:O2 and CO2 exchange in alveoliGlucose transport by glucose transporters GLUT 