Biology B1.1
- Created by: Beth Morrison
- Created on: 25-01-17 13:51
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- B1.1 ~ Introduction to Biological Molecules
- Bonding
- Covalent
- Atoms share a pair of electrons in their outer shells.
- The outer shell of both atoms is filled and a more stable compound, called a molecule is formed.
- Ionic
- Ions with opposite charges attract one another.
- The electrostatic attraction is known as an ionic bond.
- Ionic bonds are weaker than covalent bonds.
- Hydrogen
- The electrons within a molecule are not evenly distributed.
- This region is more negatively charged than the rest of the molecule.
- A molecule with an uneven distribution of charge is said to be a polar molecule.
- The negatively charges region of one polarised molecule and the positively charged region of another are attracted to each other.
- A weak electrostatic bond is formed between the two.
- Covalent
- Polymerisation
- Monomers can be linked together to form long chains called monomers.
- The monomers of a polymer are usually based on carbon.
- Many polymers such as polyesters are industry produced.
- Other polymers such as polypeptides are made naturally by living organisms.
- Untitled
- Monomers
- Monomers are the smaller units from which larger molecules are made
- Bonding
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