Free radicals Flashcards
(6 cards)
0
Q
What is another name for an unstable radical?
A
Free radical
1
Q
What is an unstable radical?
A
An atom or molecule with one or more unpaired electron. They are oxidising agents
2
Q
Why are unstable radicals a problem?
A
They pull a hydrogen atom from another molecule to pair up with, consequently damaging the molecules in the cell, such as lipids etc.
3
Q
How do vitamins c and e, as well as beta-ceratone help protect us from free radicals?
A
They provide hydrogen atoms whose electrons pair up with the unpaired elect ones in the radicals
4
Q
How do anti oxidants protect us from free radicals?
A
They use enzymes to repair oxidised DNA and use progresses to destroy oxidised proteins
5
Q
Examples of foods with antioxidant properties
A
Wine and some fruit juices
