IB Biology Topic B2.1.1 Lipid Bilayers as the Basis of Cell Membranes Revision Notes (SL/HL)

IB Biology Topic B2.1.1 Lipid Bilayers as the Basis of Cell Membranes Revision Notes (SL/HL) | RevisionDojo

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Phospholipid Bilayers Form the Basis of All Cell Membranes

The lipid bilayer forms the foundation of every cell membrane.
It defines the boundary between a cell and its surroundings.
It also separates internal compartments inside eukaryotic cells.

Phospholipids Are Amphipathic, With a Water-Loving Head and Water-Hating Tails

Hydrophilic head: the polar phosphate group forms the head, which is attracted to water.
Hydrophobic tails: two nonpolar hydrocarbon chains form the tails, which avoid water.
Having both a water-loving and a water-hating part makes the molecule amphipathic.

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Lorem ipsum dolor sit amet, consectetur adipiscing elit.
Sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.
Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris.
Duis aute irure dolor in reprehenderit in voluptate velit esse cillum.

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Phospholipid Bilayers Form the Basis of All Cell Membranes

The lipid bilayer forms the foundation of every cell membrane.
It defines the boundary between a cell and its surroundings.
It also separates internal compartments inside eukaryotic cells.

Phospholipids Are Amphipathic, With a Water-Loving Head and Water-Hating Tails

Hydrophilic head: the polar phosphate group forms the head, which is attracted to water.
Hydrophobic tails: two nonpolar hydrocarbon chains form the tails, which avoid water.
Having both a water-loving and a water-hating part makes the molecule amphipathic.

Definition

Paywall

(on a website) an arrangement whereby access is restricted to users who have paid to subscribe to the site.

anim nostrud sit dolore minim proident quis fugiat velit et eiusmod nulla quis nulla mollit dolor sunt culpa aliqua

Duis aute irure dolor in reprehenderit

Note

Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam quis nostrud exercitation.

Excepteur sint occaecat cupidatat non proident

Tip

Lorem ipsum dolor sit amet, consectetur adipiscing elit.
Sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.
Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris.
Duis aute irure dolor in reprehenderit in voluptate velit esse cillum.

A - Unity and Diversity9 subtopics

B - Form and Function10 subtopics

C - Interaction and Interdependence9 subtopics

D - Continuity and Change12 subtopics

IB Biology Topic B2.1.1: Lipid Bilayers as the Basis of Cell Membranes Notes

A - Unity and Diversity9 subtopics

B - Form and Function10 subtopics

C - Interaction and Interdependence9 subtopics

D - Continuity and Change12 subtopics

Phospholipid Bilayers Form the Basis of All Cell Membranes

Phospholipids Are Amphipathic, With a Water-Loving Head and Water-Hating Tails

anim nostrud sit dolore minim proident quis fugiat velit et eiusmod nulla quis nulla mollit dolor sunt culpa aliqua

Duis aute irure dolor in reprehenderit

Excepteur sint occaecat cupidatat non proident

Unlock the rest of this chapter with a free account

Phospholipid Bilayers Form the Basis of All Cell Membranes

Phospholipids Are Amphipathic, With a Water-Loving Head and Water-Hating Tails

anim nostrud sit dolore minim proident quis fugiat velit et eiusmod nulla quis nulla mollit dolor sunt culpa aliqua

Duis aute irure dolor in reprehenderit

Excepteur sint occaecat cupidatat non proident

Unlock the rest of this chapter with a free account