Multiple ChoiceWhich process moves an ion across a cell membrane against the concentration gradient?289views
Multiple ChoiceWhich of the following molecules provides the energy required for active transport processes in cells?484views
Multiple ChoiceWhich type of transport requires energy to move substances across cell membranes?515views
Multiple ChoiceWhich process uses proteins to move molecules against a concentration gradient?429views
Multiple ChoiceWhich of the following membrane activities requires energy from ATP hydrolysis?674views
Multiple ChoiceWhich of the following is a property of protein-based active transport across cell membranes?95views
Multiple ChoiceWhich of the following is an example of active transport through a cell membrane?441views