IB Biology Topic D1.2.4 Transcription as a Process Required for the Expression of Genes Revision Notes (SL/HL)

IB Biology Topic D1.2.4 Transcription as a Process Required for the Expression of Genes Revision Notes (SL/HL) | RevisionDojo

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Transcription is the controllable first step, so cells transcribe only the genes they need

Because transcription can be switched on or off, it is the point where a cell decides which genes to express.

Efficiency: the cell saves resources by transcribing a gene only when its product is needed.
Specialisation: different cell types transcribe different genes to carry out their particular functions.
Adaptation: the cell can respond to changing conditions by turning transcription of particular genes up or down.

The transcriptome is the full set of RNA transcripts in a cell at a given time

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Transcription is the controllable first step, so cells transcribe only the genes they need

Because transcription can be switched on or off, it is the point where a cell decides which genes to express.

Efficiency: the cell saves resources by transcribing a gene only when its product is needed.
Specialisation: different cell types transcribe different genes to carry out their particular functions.
Adaptation: the cell can respond to changing conditions by turning transcription of particular genes up or down.

The transcriptome is the full set of RNA transcripts in a cell at a given time

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(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

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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.

Excepteur sint occaecat cupidatat non proident

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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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A - Unity and Diversity9 subtopics

B - Form and Function10 subtopics

C - Interaction and Interdependence9 subtopics

D - Continuity and Change12 subtopics

IB Biology Topic D1.2.4: Transcription as a Process Required for the Expression of Genes Notes

A - Unity and Diversity9 subtopics

B - Form and Function10 subtopics

C - Interaction and Interdependence9 subtopics

D - Continuity and Change12 subtopics

Transcription is the controllable first step, so cells transcribe only the genes they need

The transcriptome is the full set of RNA transcripts in a cell at a given time

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

Transcription is the controllable first step, so cells transcribe only the genes they need

The transcriptome is the full set of RNA transcripts in a cell at a given time

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