IB Biology Topic A1.2.3 Sugar–phosphate Bonding and the Sugar–phosphate “backbone” of DNA and RNA Revision Notes (SL/HL)

IB Biology Topic A1.2.3 Sugar–phosphate Bonding and the Sugar–phosphate “backbone” of DNA and RNA Revision Notes (SL/HL) | RevisionDojo

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The Sugar-Phosphate Backbone Is the Structural Framework

The backbone is created when individual nucleotides are joined in a chain by covalent bonds.
It gives nucleic acids their structural framework while the sequence of nitrogenous bases carries the genetic information.

Phosphodiester Bonds Link Nucleotides Into a Chain

Nucleotides are joined by covalent bonds in a specific arrangement.
1. These covalent bonds are called phosphodiester bonds, forming between the phosphate group of one nucleotide and the 3' hydroxyl group on the sugar of the next nucleotide.

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Lorem ipsum dolor sit amet, consectetur adipiscing elit.
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Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris.
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The Sugar-Phosphate Backbone Is the Structural Framework

The backbone is created when individual nucleotides are joined in a chain by covalent bonds.
It gives nucleic acids their structural framework while the sequence of nitrogenous bases carries the genetic information.

Phosphodiester Bonds Link Nucleotides Into a Chain

Nucleotides are joined by covalent bonds in a specific arrangement.
1. These covalent bonds are called phosphodiester bonds, forming between the phosphate group of one nucleotide and the 3' hydroxyl group on the sugar of the next nucleotide.

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 A1.2.3: Sugar–phosphate Bonding and the Sugar–phosphate “backbone” of DNA and RNA Notes

The Sugar-Phosphate Backbone Is the Structural Framework

Phosphodiester Bonds Link Nucleotides Into a Chain

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

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The Sugar-Phosphate Backbone Is the Structural Framework

Phosphodiester Bonds Link Nucleotides Into a Chain

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