Antioxidants

Question 1

Superoxide Radical

Answer 1

O2-

Question 2

Creation of superoxide radical

Answer 2

O2 + e- = O2-

Question 3

Where des the electron need to create the superoxide radical come from

Answer 3

leaking of electrons from ETC onto oxygen

Question 4

How is O2- eliminated

Answer 4

Ascorbic acid (AH2) or SOD (superoxide dismuatse)

Question 5

What are SOD’s cofactors

Answer 5

Zn-Cu (outside of mito) or Mn (inside mito)

Question 6

Hydrogen Peroxide

Answer 6

H2O2 (not stable)

Question 7

How is H2O2 formed

Answer 7

O2- +O2- +2H+ = H2O2 + O2

Question 8

How is H2O2 eliminated

Answer 8

ascorbic acid or Glutathionine Peroxidase (GPx) or catalase

Question 9

What is GPx dependent on

Answer 9

selenium

Question 10

Hydroxyl Radical

Answer 10

OH* (strong radical)

Question 11

How is OH* formed

Answer 11

(H2O2 + O2- + H+ = H2O +O2+ OH) OR (Fe+2 + H2O2 = Fe+3 +OH + OH-

Question 12

what will a reduced form of iron cause

Answer 12

rust, hydroxyl, hydroxyl radical

Question 13

How is OH* eliminated

Answer 13

ascorbic acid and GPx

Question 14

3 types of lipid radicals

Answer 14

radicals, peroxyl radicals, peroxides

Question 15

Lipid radical

Answer 15

L-

Question 16

Lipid Peroxyl Radicals

Answer 16

LOO-

Question 17

Lipid Peroxides

Answer 17

L- + LOOH

Question 18

How is lipid radical eliminated

Answer 18

Vitamin E

Question 19

How are lipid peroxyl radicals eliminated

Answer 19

Vitamin E

Question 20

How are lipid peroxides eliminated

Answer 20

GPx