IB Biology Topic A2.2.13 Cell Differentiation Revision Notes (HL)

IB Biology Topic A2.2.13 Cell Differentiation Revision Notes (HL) | RevisionDojo

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Cell Differentiation Is The Selective Expression Of Genes

A multicellular organism contains many cell types that all arise from a single zygote.
Cell differentiation is the process by which a cell becomes structurally and functionally specialized.
1. It does this by selectively expressing genes, switching some on and others off.
This enables division of labour between tissues and organs.

Analogy

Every cell starts with the same full box of crayons, meaning the same genome.
Each cell type chooses to draw with only a few colours, meaning it expresses only some of those genes.
Different colour choices produce different pictures, which is why cells with identical DNA look and behave so differently.

All Cells Share One Genome But Express Different Genes

Definition

Differentiation

Differentiation is the process where pluripotent cells (unspecialized cells) develop into specialized cells with unique structures and functions.

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Duis aute irure dolor in reprehenderit

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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

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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 nisi ut aliquip ex ea commodo consequat.

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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Cell Differentiation Is The Selective Expression Of Genes

A multicellular organism contains many cell types that all arise from a single zygote.
Cell differentiation is the process by which a cell becomes structurally and functionally specialized.
1. It does this by selectively expressing genes, switching some on and others off.
This enables division of labour between tissues and organs.

Analogy

Every cell starts with the same full box of crayons, meaning the same genome.
Each cell type chooses to draw with only a few colours, meaning it expresses only some of those genes.
Different colour choices produce different pictures, which is why cells with identical DNA look and behave so differently.

All Cells Share One Genome But Express Different Genes

Definition

Differentiation

Differentiation is the process where pluripotent cells (unspecialized cells) develop into specialized cells with unique structures and functions.

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 A2.2.13: Cell Differentiation Notes

A - Unity and Diversity9 subtopics

B - Form and Function10 subtopics

C - Interaction and Interdependence9 subtopics

D - Continuity and Change12 subtopics

Cell Differentiation Is The Selective Expression Of Genes

All Cells Share One Genome But Express Different Genes

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

Cell Differentiation Is The Selective Expression Of Genes

All Cells Share One Genome But Express Different Genes

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