Biology
>
A-Level
>
Cells
>
What is th...
2 years ago
·
3 Replies
·
2061 views
Talon Jaskolski
3 Answers
UCL Medical student with 3 years of tutoring experience
4 reviews
Proteins have many roles within a plasma membrane. Proteins in the form of carrier proteins are involved in active transport of molecules both in and out of a cell. Porteins in the form of channel proteins are involved in the passive transport of molecules down the concentration gradient (either in or out of the cell). Proteins can also play a key role in cell adhesion (glycoproteins) or cell signalling (glycoproteins).
I'm available for 1:1 private online tuition!
Click here to view my profile and arrange a free introduction.Enthusiastic maths and science tutor with over 5 years of experience.
Mnemonic (JET RAT)
Junctions – Serve to connect and join two cells together
Enzymes – Fixing to membranes localises metabolic pathways
Transport – Responsible for facilitated diffusion and active transport
Recognition – May function as markers for cellular identification
Anchorage – Attachment points for cytoskeleton and extracellular matrix
Transduction – Function as receptors for peptide hormones
I'm available for 1:1 private online tuition!
Click here to view my profile and arrange a free introduction.Membrane proteins mediate actions that are critical to the survival of biological cells. Membrane-embedded transporters carry ions and bigger solutes across membranes, receptors facilitate cell-to-cell communication, and membrane-embedded enzymes catalyse chemical processes.
Think you can help?
Get started with a free online introductions with an experienced and qualified online tutor on Sherpa.
Find an A-Level Biology Tutor