Multiple ChoiceWhich form of cellular transport moves substances against the concentration gradient?21views
Multiple ChoiceWhich of the following best describes the main difference between passive and active transport across a cell membrane?25views
Multiple ChoiceHow do facilitated diffusion and active transport differ in terms of energy usage?285views
Multiple ChoiceWhich of the following best describes the main difference between passive diffusion and facilitated diffusion across a cell membrane?20views
Multiple ChoiceHow does particle size affect a molecule's ability to transport across a cell membrane?216views
Multiple ChoiceWhich of the following is a passive mechanism used to move materials into and out of the cell?217views