Podcast
Questions and Answers
What is the defining characteristic of an essential vitamin?
What is the defining characteristic of an essential vitamin?
- It can be synthesized by the human body
- It acts as an antioxidant
- It is involved in catalysis
- It is only made by microbes (correct)
Which type of molecules function as carriers of specific functional groups and participate in catalysis but are not permanently bound to the enzyme?
Which type of molecules function as carriers of specific functional groups and participate in catalysis but are not permanently bound to the enzyme?
- Metal ions
- Coenzymes (correct)
- Vitamins E and C
- Cofactors
What is the role of iron as a cofactor in enzymes?
What is the role of iron as a cofactor in enzymes?
- Involved in redox reactions and oxygen-binding (correct)
- Acts as an antioxidant
- Participates in photosynthesis
- Essential for biosynthesis of plant hormones
Why do some fruits have high concentrations of ascorbic acid?
Why do some fruits have high concentrations of ascorbic acid?
In animals, how is ascorbate biosynthesis different from plants?
In animals, how is ascorbate biosynthesis different from plants?
Which vitamins are considered redox vitamins?
Which vitamins are considered redox vitamins?
What is the last step in the biosynthesis of ascorbic acid (vitamin C)?
What is the last step in the biosynthesis of ascorbic acid (vitamin C)?
Why does herbivory reduce the evolutionary pressure to maintain ascorbate biosynthesis in plants?
Why does herbivory reduce the evolutionary pressure to maintain ascorbate biosynthesis in plants?
What is the role of vitamin C in collagen synthesis?
What is the role of vitamin C in collagen synthesis?
What is the cause of scurvy?
What is the cause of scurvy?
Why do some animals always lose the ability to produce vitamin C in their bodies?
Why do some animals always lose the ability to produce vitamin C in their bodies?
What is the main structural feature of collagen?
What is the main structural feature of collagen?
What role does acetic acid play when there's not enough oxygen?
What role does acetic acid play when there's not enough oxygen?
Why do we evolve antioxidants in response to radical formation?
Why do we evolve antioxidants in response to radical formation?
What process does vitamin C assist in for collagen synthesis?
What process does vitamin C assist in for collagen synthesis?
What is the role of ascorbic acid (vitamin C) during times when there is not enough oxygen?
What is the role of ascorbic acid (vitamin C) during times when there is not enough oxygen?
Why did the loss of vitamin C biosynthesis occur?
Why did the loss of vitamin C biosynthesis occur?
Why is the loss of vitamin C biosynthesis always in the GLO gene?
Why is the loss of vitamin C biosynthesis always in the GLO gene?
Why is the last step in the biosynthesis of ascorbic acid (vitamin C) similar in animals and plants?
Why is the last step in the biosynthesis of ascorbic acid (vitamin C) similar in animals and plants?
What is the defining characteristic of an essential vitamin?
What is the defining characteristic of an essential vitamin?
What is the role of ascorbic acid (vitamin C) in collagen synthesis?
What is the role of ascorbic acid (vitamin C) in collagen synthesis?
What process does vitamin C assist in for collagen synthesis?
What process does vitamin C assist in for collagen synthesis?
What is the quaternary structure of collagen?
What is the quaternary structure of collagen?
What is the consequence of vitamin C deficiency in terms of collagen synthesis?
What is the consequence of vitamin C deficiency in terms of collagen synthesis?
What is the role of iron ions in collagen synthesis?
What is the role of iron ions in collagen synthesis?
What is the function of flavonoids in the body?
What is the function of flavonoids in the body?
How does ascorbate function in terms of electron transfers?
How does ascorbate function in terms of electron transfers?
What is the role of vitamin E in radical formation?
What is the role of vitamin E in radical formation?
What is the process that results in the acidification of muscles when there is not enough oxygen?
What is the process that results in the acidification of muscles when there is not enough oxygen?
What is the role of hydroxyl free radicals in the body?
What is the role of hydroxyl free radicals in the body?
What is the consequence of a lack of vitamin C in terms of collagen hydroxylation?
What is the consequence of a lack of vitamin C in terms of collagen hydroxylation?
What is the relationship between vitamin C and the enzyme prolyl 4-hydroxylase in collagen synthesis?
What is the relationship between vitamin C and the enzyme prolyl 4-hydroxylase in collagen synthesis?
