{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

Diffusion Types

Diffusion Types - electrochemical gradient rate of...

Info icon This preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
Mucociliary: the cilia on the mucus-lined set of tubes Sputum: mucus + crap Chronic endobronchial bacterial colonization: bacteria inside the bronchioles forever! Pancreatic insufficiency: pancreatic enzymes cannot be transported Electrochemical gradient: chemical gradient - solutes tend to move from more concentrated areas to less concentrated areas; electrical gradient - harged solutes tend to move towards an oppositely charged environment (cells are universally more negative on the inside than the outside, typically ≈ -70 mV) Facilitated diffusion: transport protein accelerates the movement of a solute down it’s
Image of page 1
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: electrochemical gradient, rate of facilitated diffusion is much higher than passive diffusion, specific, saturable transport; examples: ion channels, glucose transport into cells, ATP transport out of the mitochondrion o Ion channels: pore-forming proteins that help establish and control the small voltage gradient across the plasma membrane of all living cells (see cell potential) by allowing the flow of ions down their electrochemical gradient • Passive diffusion: t ransport of a substance across a cell membrane by diffusion; expenditure of energy is not required...
View Full Document

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern