A-Level Biology OCR A
Hydrogen Atom Bonds Electronegative Slight Charge Molecule Explain
| Front |
Explain what a hydrogen bond is, what types of atoms it can join together and where they occur in biology. |
| Back |
Hydrogen bonds- A hydrogen bond is the electromagnetic attraction created between a partially positively charged hydrogen atom attached to a highly electronegative atom (F/N/O) and another nearby electronegative atom.
Hydrogen bonds are continually made and broken.
- In water the slight positive charge of a hydrogen atom of one molecule is attracted to the slight negative charge of an adjacent oxygen atom from another molecule
- Hydrogen bonds are responsible for holding together DNA, proteins, and other macromolecules.
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A-Level Biology OCR A