Podcast
Questions and Answers
What defines a molecule as a free radical?
What defines a molecule as a free radical?
- Containing no electrons in its outer shell
- Possessing one or more unpaired electrons in its outer shell (correct)
- Having a complete set of paired electrons in its outer shell
- Having a completely filled outer shell of electrons
How are free radicals formed?
How are free radicals formed?
- By gaining an extra electron from the environment
- Through the sharing of electrons with other molecules
- By losing an electron to form a stable configuration
- Via the breakage of a chemical bond such that each fragment keeps one electron (correct)
In what way can redox reactions contribute to the formation of free radicals?
In what way can redox reactions contribute to the formation of free radicals?
- By removing unpaired electrons from molecules
- By transferring electrons between molecules, leading to the generation of free radicals (correct)
- By stabilizing free radicals and preventing their formation
- By neutralizing the reactivity of free radicals
Free radicals are always formed from molecules via the cleavage of a radical to give another radical.
Free radicals are always formed from molecules via the cleavage of a radical to give another radical.
Redox reactions do not contribute to the formation of free radicals.
Redox reactions do not contribute to the formation of free radicals.
A molecule with one or more unpaired electrons in its outer shell is not considered a free radical.
A molecule with one or more unpaired electrons in its outer shell is not considered a free radical.
True or false: Free radicals are only formed from molecules via the breakage of a chemical bond?
True or false: Free radicals are only formed from molecules via the breakage of a chemical bond?
True or false: Redox reactions do not contribute to the formation of free radicals?
True or false: Redox reactions do not contribute to the formation of free radicals?
True or false: A molecule with one or more unpaired electrons in its outer shell is called a free radical?
True or false: A molecule with one or more unpaired electrons in its outer shell is called a free radical?
Free radicals are only formed from molecules via the cleavage of a radical to give another radical.
Free radicals are only formed from molecules via the cleavage of a radical to give another radical.
A molecule with one or more unpaired electrons in its outer shell is always considered a free radical.
A molecule with one or more unpaired electrons in its outer shell is always considered a free radical.
Redox reactions do not contribute to the formation of free radicals.
Redox reactions do not contribute to the formation of free radicals.
True or false: Glycation is the process by which simple sugars bind to molecules such as proteins and lipids?
True or false: Glycation is the process by which simple sugars bind to molecules such as proteins and lipids?
True or false: The predominance of advanced glycosylation end-products can result in abnormalities such as vascular fibrosis and reduced collagenous elasticity?
True or false: The predominance of advanced glycosylation end-products can result in abnormalities such as vascular fibrosis and reduced collagenous elasticity?
True or false: Glycation theory suggests that glucose may act as a mediator of aging?
True or false: Glycation theory suggests that glucose may act as a mediator of aging?
