Multiple ChoiceLeak channels allow the movement of potassium and sodium ions by what type of membrane transport?208views
Textbook QuestionBy what three major transport mechanisms do substances get into and out of cells?35views
Multiple ChoiceWhat is the difference between active and passive transport across a membrane?11080views70rank
Multiple ChoiceWhich option below best describes a transporter that requires ATP to move molecules A and B out of the cell?4897views72rank
Multiple ChoiceWhich of the following is a correct difference between active transport and facilitated diffusion? 5739views
Multiple ChoiceA cell has a membrane potential of –100 mV (more negative inside than outside) and has 1,000 times more calcium ions outside the cell than inside. Which of the following best describes a mechanism by which Ca2+ enters the cell? 1910views
