Purines and pyrimidines are__________________?
Correct answer: B. Nitrogenous bases
- A. Enzymes
- B. Nitrogenous bases
- C. Carbohydrates
- D. Lipids
Explanation
Purines, adenine and guanine, and pyrimidines, cytosine, thymine and uracil, are nitrogen-containing bases found in nucleic acids. Their ring structures contain nitrogen atoms, distinguishing them from carbohydrates and lipids. Enzymes are proteins, so selecting enzymes confuses a biological function with a chemical class.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
About Importance of Proteins
Proteins are polymers of amino acids joined by peptide bonds, and their biological roles depend on primary, secondary, tertiary and quaternary structure. Coverage includes enzymes, hormones, antibodies, transport proteins, muscle fibres and structural tissues, together with denaturation and the effects of heat, pH and chemicals.
Practise Macromolecules
299 free Macromolecules MCQs from Chemistry, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Chemistry questions like this
Chemistry is on 14 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Importance of Proteins questions
Nucleic acids direct the synthesis of__________________?
Amino acids present in cheese___________________?
Collagen is the most abundant protein in the human body and its main role is
Orgosterol is__________________?
Lipopolysaccharides are examples of________________?
Animal fats are located particularly in__________________?