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
Textbook QuestionWrite a single sentence, using no more than 25 words, to summarize each of the following cellular processes:Primary active transport491views
Multiple ChoiceWhich of the following is a difference between primary and secondary active transport?232views
Multiple ChoiceWhat allows sodium and potassium ions to flow down their electrochemical gradient across the cell membrane?188views
