Individual phospholipid Phospholipid bilayer Liposome Phospholipid heads are attracted to water and to each other When shaken in water, Hydrophilic phosphate head Lipid bilayer the phospholipids self-organize into spheres, or liposomes. Water Phospholipid tails retreat from water and pivot inward, creating a bilayer. -Hydrophobic fatty acid tails Water Rectangular Snip Figure 4.3 Liposomes form when phospholipids and water are shaken together When you shake a mixture of phospholipids and water, the phospholipid bilayers bend and link together to form spheres called liposomes. This simple structure is remarkably similar to the basic structure of a cell.

Biochemistry
9th Edition
ISBN:9781319114671
Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Publisher:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Chapter1: Biochemistry: An Evolving Science
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Q1: Why is it important that the phosphate head of a phospholipid is hydrophilic? Q2: What essential component of a cell do liposomes lack, and why is that omission important? Q3: Could the tendency of phospholipid bilayers to spontaneously form spheres have played a role in the origin of life?

Individual phospholipid
Phospholipid bilayer
Liposome
Phospholipid
heads are
attracted to
water and to
each other
When shaken in water,
Hydrophilic
phosphate
head
Lipid
bilayer
the phospholipids
self-organize into
spheres, or liposomes.
Water
Phospholipid
tails retreat from
water and pivot
inward, creating
a bilayer.
-Hydrophobic
fatty acid tails
Water
Rectangular Snip
Figure 4.3
Liposomes form when phospholipids and water are shaken together
When you shake a mixture of phospholipids and water, the phospholipid bilayers bend and link together to form spheres called
liposomes. This simple structure is remarkably similar to the basic structure of a cell.
Transcribed Image Text:Individual phospholipid Phospholipid bilayer Liposome Phospholipid heads are attracted to water and to each other When shaken in water, Hydrophilic phosphate head Lipid bilayer the phospholipids self-organize into spheres, or liposomes. Water Phospholipid tails retreat from water and pivot inward, creating a bilayer. -Hydrophobic fatty acid tails Water Rectangular Snip Figure 4.3 Liposomes form when phospholipids and water are shaken together When you shake a mixture of phospholipids and water, the phospholipid bilayers bend and link together to form spheres called liposomes. This simple structure is remarkably similar to the basic structure of a cell.
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