IB Biology Topic D2.2.3 Control of the Degradation of Mrna Revision Notes (HL)

IB Biology Topic D2.2.3 Control of the Degradation of Mrna Revision Notes (HL) | RevisionDojo

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mRNA Degradation: Controlling How Much Protein Is Made and When

Definition

mRNA degradation

mRNA degradation is the process by which mRNA molecules are broken down after they have served their purpose in protein synthesis.

This process is tightly regulated to control how long an mRNA molecule stays active in the cell.
By adjusting mRNA lifespan, the cell matches protein synthesis to its immediate needs in response to internal and external cues.

Watch: How Gene Regulation Works

The Process of Gene Regulation

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Hint

Think of this process as a project manager deciding which priorities are most urgent.

mRNA Lifespan Sets the Timing of Protein Production

The lifespan of an mRNA molecule plays a key role in regulating protein production.
Some mRNAs last only minutes to allow rapid changes in protein levels, while others last for days to sustain steady protein synthesis.
Controlled degradation lets the cell do three things.
1. Regulate protein production: quickly degrade mRNA for proteins no longer needed, preventing overproduction.

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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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mRNA Degradation: Controlling How Much Protein Is Made and When

Definition

mRNA degradation

mRNA degradation is the process by which mRNA molecules are broken down after they have served their purpose in protein synthesis.

This process is tightly regulated to control how long an mRNA molecule stays active in the cell.
By adjusting mRNA lifespan, the cell matches protein synthesis to its immediate needs in response to internal and external cues.

Watch: How Gene Regulation Works

The Process of Gene Regulation

Open in new tab

Hint

Think of this process as a project manager deciding which priorities are most urgent.

mRNA Lifespan Sets the Timing of Protein Production

The lifespan of an mRNA molecule plays a key role in regulating protein production.
Some mRNAs last only minutes to allow rapid changes in protein levels, while others last for days to sustain steady protein synthesis.
Controlled degradation lets the cell do three things.
1. Regulate protein production: quickly degrade mRNA for proteins no longer needed, preventing overproduction.

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 D2.2.3: Control of the Degradation of Mrna Notes

mRNA Degradation: Controlling How Much Protein Is Made and When

Watch: How Gene Regulation Works

mRNA Lifespan Sets the Timing of Protein Production

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

mRNA Degradation: Controlling How Much Protein Is Made and When

Watch: How Gene Regulation Works

mRNA Lifespan Sets the Timing of Protein Production

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

A - Unity and Diversity9 subtopics

B - Form and Function10 subtopics

C - Interaction and Interdependence9 subtopics

D - Continuity and Change12 subtopics