12 Questions
What is the basic unit structure of nucleic acids?
Nucleotides
Which of the following nitrogenous bases has a single ring structure?
Thymine and Uracil
What is the charge of the sugar-phosphate backbone in a polynucleotide chain?
Negative
What is the characteristic of a free radical?
Highly reactive and short-lived
What is the result of incomplete oxygen reduction?
Production of ROS
What is a characteristic of H2O2?
It is not a radical by definition
What is the term used to describe tissue damage caused by oxygen radicals?
Oxidative damage
What is the primary function of antioxidants in the body?
To protect against cellular injury by ROS or other oxidants
What type of antioxidant is Vitamin E?
Fat-soluble
Which antioxidant is 20 times stronger than Vitamin C and 50 times stronger than Vitamin E?
Flavanoids
What is the ability of antioxidants like Vitamin C to reactivate themselves?
Recycling
Which antioxidant is able to cross the blood-brain barrier?
Flavanoids
This quiz covers the basics of nucleotides, the building blocks of nucleic acids, including their composition, nitrogenous bases, and polymerization.
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