Illustration of ion chanels in plasma membrane
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Illustration of ion chanels in plasma membrane
Illustration of a model for the potassium and sodium ion channels through pores in the plasma membrane of an animal nerve cell: an example of active transport, where solutes (ions, sugars, amino acids) are pumped into cells from a region of lower to higher concentration. This is a reverse of free diffusion, where molecules move from higher to lower concentrations, that is, down the concentration gradient. The sodium/potassium exchange pump is described here: sodium ions (Na+, red spheres) are being actively pumped out of the cell in a compulsory exchange for potassium ions (K+, blue spheres) entering the cell
Science Photo Library features Science and Medical images including photos and illustrations
Media ID 6402023
© FRANCIS LEROY, BIOCOSMOS/SCIENCE PHOTO LIBRARY
Cell Structure Cytology Membrane Plasma Membrane Pore Micro Biology
EDITORS COMMENTS
This print from Science Photo Library showcases an intricate illustration of ion channels in the plasma membrane of an animal nerve cell. The image depicts a model that highlights the active transport process occurring within these channels, specifically focusing on potassium and sodium ions. The illustration beautifully captures the complexity of this biological phenomenon. It demonstrates how solutes such as ions, sugars, and amino acids are pumped into cells against their concentration gradient - from regions of lower to higher concentration. This mechanism is known as active transport and stands in contrast to free diffusion, where molecules move down their concentration gradient. At the center of attention is the sodium/potassium exchange pump, which plays a crucial role in maintaining cellular homeostasis. The vibrant red spheres represent sodium ions (Na+), being actively expelled out of the cell through this pump. Simultaneously, blue spheres symbolizing potassium ions (K+) enter the cell as part of this compulsory exchange process. Through its meticulous depiction of ion channels and pores within the plasma membrane, this image offers valuable insights into cell biology and micro biology. It serves as a reminder that even at microscopic levels, life thrives with remarkable intricacy and precision.
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