Some molecules or particles are too large or too hydrophilic to pass through a lipid bilayer. Other molecules could pass through the bilayer but must be transported rapidly in such large numbers that channel-type transport is impractical.
Vanna White Has the World's Most G-Rated Wardrobe Malfunction on 'Wheel of Fortune'. by 11:56 AM PST, December 11, 2015. Playing Vanna White Has the World's Most G-Rated Wardrobe Malfunction on 'Wheel of Fortune'. Vanna White found herself in a sticky situation during Thursday's Wheel of Fortune. While walking across the stage, the hostess, unbeknownst to her, brought part of the set with her when a prop gift got caught on the bottom of her dress.
Vanna White dishes on 'Wheel of Fortune's' lasting success, Playboy regrets. Not too many people can say theyâve had the same job for over three decades and still love it â except for Vanna White. The 60-year-old letter-turner and co-host of âWheel of Fortuneâ is gearing up to celebrate its 35th season this September. She spoke with Fox News about what the audition process to host Wheel was really like, the thousands of gowns sheâs worn and the important lesson she learned after appearing in Playboy.