Multiple ChoiceWhich of the following best distinguishes active transport from passive transport across a cell membrane?15views
Multiple ChoiceIf sodium ($\mathrm{Na^+}$) does not move down its concentration gradient in a co-transport pump (such as the sodium-glucose symporter), what would be the likely outcome?18views
Multiple ChoiceWhich type of transport across the plasma membrane involves the use of carrier proteins?159views
Multiple ChoiceWhich homeostatic process requires energy to move particles across the plasma membrane?20views
Multiple ChoiceIn what ways is active transport different from passive transport across a cell membrane?19views
Multiple ChoiceWhich of the following best describes the force driving simple diffusion across a biological membrane?15views
Multiple ChoiceWhich of the following statements correctly describes a similarity and a difference between facilitated diffusion and active transport?199views
Multiple ChoiceDuring active transport, in which direction do particles move across a cell membrane?22views
Multiple ChoiceWhich of the following molecules is most likely to cross a cell membrane by simple diffusion rather than facilitated diffusion?3views