Antioxidante

Free radicals are atoms with unpaired electrons, produced during metabolism, that can harm cells and tissues. Antioxidants like vitamins C and E help mitigate their negative effects.

What characterizes a free radical?

• A complete electron shell

• A stable atomic structure

• An unpaired number of electrons

• An even number of electrons

During what process are free radicals typically produced?

• Respiration

• Fermentation

• Normal metabolism

• Photosynthesis

What is a potential consequence of free radicals in the body?

• They enhance cell growth

• They improve immune function

• They can damage cells and tissues

• They stabilize DNA

Which of the following is used by organisms to counteract free radicals?

• Vitamin C

• Vitamin A

• Vitamin D

• Vitamin K

Besides vitamin C, which other vitamin is mentioned as an antioxidant?

• Vitamin A

• Vitamin K

• Vitamin B

• Vitamin E