Membrane Transport and Hydrophobicity

The size, solubility, and charge of the molecule determine the rate of diffusion.

Transporters and channels are the two main types of membrane transport proteins discussed.

Passive transport allows molecules to move down their concentration gradients without requiring energy, while active transport requires an input of energy to move molecules against their concentration gradients.

<p>Transporters are the only type of membrane transport proteins capable of carrying out active transport.</p> Signup and view all the answers

<p>Conformational changes in a transporter facilitate the movement of a solute such as glucose across the lipid bilayer without requiring energy.</p> Signup and view all the answers

<p>Transporters facilitate the movement of molecules or ions across a lipid bilayer by undergoing conformational changes.</p> Signup and view all the answers

<p>Passive transport allows molecules to move down their concentration gradients without requiring energy, while active transport requires energy to move molecules against their concentration gradients.</p> Signup and view all the answers

<p>The transport of glucose across a liver cell is an example of passive transport.</p> Signup and view all the answers

<p>The rate of diffusion is determined by the size, solubility, and charge of the molecule.</p> Signup and view all the answers

<p>Yes, transporters can mediate the active transport of charged molecules or ions through conformational changes.</p> Signup and view all the answers