Question

Using information from the video you just watched and from Highlight 11 in your test answer the following questions. Be thorough and detailed. 1. Define dietary antioxidants 2. What is oxidative stress 3. What are free radicals 4. What is the relationship between oxidative stress, antioxidants and free radicals 5. What are phytochemicals 6. What is the role of antioxidant in defending against (choose one or the other) Heart diseae or Cancer

Answer 1

1. Dietary antioxidants :-

Chemicals that protect cells from damage from oxidation and free radicals .

2. Oxidative stress :-

Oxidative stress represents an imbalance between the production and manifestation of reactive oxygen species (ROS) and a biological system's ability to readily detoxify the reactive intermediates or to repair the resulting damage.

3. Free radicals :-

An atom that has lost an electron and is left with an unpaired electron . Free radicals are highly reactive and cause damage to molecules in the cell .

5. Phytochemicals are bioactive chemicals found in plants believed to confer resistance to disease on the eater.