9. Transport Across Membranes

In the context of transmembrane transport, which statement best describes how active transport differs from simple diffusion across a lipid bilayer?

Which of the following sets correctly lists three major types of active transmembrane transport used by cells?

Which of the following is an example of active transmembrane transport (requires energy input to move a solute against its electrochemical gradient)?

Which of the following is an example of active transport across a cell membrane?

In the context of transmembrane transport, which statement best distinguishes active transport from facilitated diffusion?

In the context of principles of transmembrane transport, why does active transport require an input of energy (e.g., ATP hydrolysis or an ion gradient)?

In the context of principles of transmembrane transport, what does it mean that the cell membrane is selectively permeable?

In the context of principles of transmembrane transport, what are the two main types of active transport across cellular membranes?

Which of the following is a form of active transmembrane transport?

Which statement best defines active transport across a biological membrane?

In the context of principles of transmembrane transport, which process does NOT require direct energy input from the cell (e.g., ATP hydrolysis)?

Which of the following is an example of active transmembrane transport (requires energy input to move a solute against its electrochemical gradient)?

Which of the following is the best definition of active transport across a biological membrane?

In the context of principles of transmembrane transport, what does active transport require to move a solute across a membrane against its electrochemical gradient?

In the context of transmembrane transport, which statement correctly distinguishes active transport from passive transport?