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Astonishing Biology Facts

The science of life holds endless surprises. Discover the most incredible facts about cells, genes, evolution and the human body.

253 facts and counting

Did Membrane Proteins Play a Role in the Origin of Life?

origin of lifeprotocellsprimitive membrane proteins

How Do ABC Transporters Use ATP to Move Molecules Across Membranes?

abc transporteratp hydrolysismembrane transport

Why Do Some Membrane Proteins Require Lipid Rafts to Function?

lipid raftsmembrane microdomainssignaling

What Distinguishes Integral Membrane Proteins From Peripheral Ones?

integral membrane proteinsperipheral membrane proteinstransmembrane

How Did Bacteriorhodopsin Help Us Understand Membrane Protein Structure?

bacteriorhodopsinmembrane protein structureproton pump

What Is the Role of Glycosylation in Membrane Proteins?

glycosylationglycoproteinscell adhesion

Why Do Aquaporins Allow Water But Not Protons to Cross Membranes?

aquaporinwater channelmembrane transport

Can Membrane Proteins Move Laterally in the Lipid Bilayer?

membrane proteinslateral diffusionlipid bilayer

How Do Ion Channels Select Which Ions Pass Through the Membrane?

ion channelspotassium channelsodium channel

What Makes G Protein-Coupled Receptors So Important in Medicine?

gpcrreceptorsmembrane proteins

What Revolutionized Our Understanding of the Phospholipid Bilayer?

phospholipid bilayerfluid mosaic modelsinger and nicolson

How Does the Phospholipid Bilayer Support Nerve Signal Propagation?

phospholipid bilayeraction potentialmyelin

What Mechanisms Enable Phospholipid Bilayer Fusion?

phospholipid bilayermembrane fusionsnare proteins

How Does Cholesterol Regulate Phospholipid Bilayer Fluidity?

phospholipid bilayercholesterolmembrane fluidity

Why Is the Phospholipid Bilayer Impermeable to Ions?

phospholipid bilayerion impermeabilityhydrophobic barrier

Did a Simple Oil Drop Experiment Reveal the Bilayer Structure?

phospholipid bilayergorter and grendellipid monolayer

How Does the Phospholipid Bilayer Bend for Vesicle Transport?

phospholipid bilayermembrane curvaturevesicle transport

Do Lipid Rafts Organize the Phospholipid Bilayer?

phospholipid bilayerlipid raftscholesterol

What Causes Asymmetry in the Phospholipid Bilayer?

phospholipid bilayerleaflet asymmetryflippases

Why Does the Phospholipid Bilayer Act Like a Liquid Crystal?

phospholipid bilayerliquid crystalcholesterol

How Do Membrane Proteins Move Across the Lipid Bilayer?

membrane proteinslateral diffusionflippase

Did You Know That Lipid Rafts Organize Membrane Proteins?

lipid raftcell membranemembrane microdomain

Which Proteins Are Responsible for Cell Membrane Signal Transduction?

signal transductionreceptor proteinsgpcr

What Happens When the Cell Membrane Loses Its Selectivity?

selective permeabilitycell deathtissue damage

How Does the Cell Membrane Maintain a Voltage Difference?

membrane potentialsodium-potassium pumpion gradient

Can the Cell Membrane Perform Endocytosis Without Energy?

endocytosisactive transportcell membrane

What Is the Role of Glycocalyx on the Cell Membrane?

glycocalyxcell membraneglycoproteins

Why Do Some Cells Have a Double Membrane?

double membraneorganellenucleus

How Do Cells Use Cholesterol to Regulate Membrane Fluidity?

cholesterolmembrane fluiditycell membrane

What Makes the Cell Membrane a 'Fluid Mosaic'?

cell membranefluid mosaiclipid bilayer

Why do bacteria use hopanoids in their membranes?

hopanoidbacterial membranemembrane stability

Can cell membranes form nanotubes between cells?

tunneling nanotubeintercellular communicationmembrane nanotube

What is the glycocalyx on cell membranes?

glycocalyxcell recognitioncarbohydrate

How do membrane proteins move within the bilayer?

membrane proteinlateral diffusionfrap

Why are unsaturated fats important in cell membranes?

unsaturated fatmembrane fluidityphospholipid

Did you know cell membranes have an electric potential?

membrane potentialresting potentialion channel

Can cell membranes fuse without proteins?

membrane fusionsnare proteinexocytosis

What role do lipid rafts play in cell signaling?

lipid raftcell signalingcholesterol

How do cells maintain membrane asymmetry?

membrane asymmetryflippasephospholipid

Why does the cell membrane use a lipid bilayer?

lipid bilayercell membranephospholipid

Why Is the Cell Membrane Asymmetric?

cell membranemembrane asymmetryphospholipids

How Does the Cell Membrane of Bacteria Differ from Eukaryotes?

cell membranebacteriaeukaryotes

Why Are Some Membrane Proteins Called Integral?

cell membraneintegral membrane proteinstransmembrane domains

How Does the Cell Membrane Facilitate Endocytosis?

cell membraneendocytosisclathrin

Why Does the Cell Membrane Have a Glycocalyx?

cell membraneglycocalyxglycoproteins

How Do Lipid Rafts Function in Cell Signaling?

cell membranelipid raftssignal transduction

How Do Cells Maintain a Membrane Potential?

cell membranemembrane potentialsodium-potassium pump

Why Do Animal Cell Membranes Contain Cholesterol?

cell membranecholesterolmembrane fluidity

How Does the Cell Membrane Control What Enters and Leaves?

cell membraneselective permeabilitytransport proteins

Why Is the Cell Membrane Considered a Fluid Mosaic?

cell membranefluid mosaic modelmembrane fluidity