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NA Chemistry: Nitrogenous Bases and Functions

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NA Chemistry: Nitrogenous Bases and Functions

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Questions and Answers

Which of the following are considered major purines?

Cytosine

Adenine (correct)

Guanine (correct)

Thymine

What is one of the functions of nucleosides and nucleotides?

Transport oxygen in the blood

Energy transduction (correct)

Storage of genetic information

Formation of polysaccharides

Which of the following is NOT a major pyrimidine?

Thymine

Guanine (correct)

Uracil

Dihydrouracil

What does cAMP primarily function as in cellular signaling?

<p>A signaling second messenger (A)</p> Signup and view all the answers

Which of the following is a function of coenzymes like NAD and FAD?

<p>Participate in enzyme reactions (C)</p> Signup and view all the answers

Study Notes

NA Chemistry

Transcription: Process involving nitrogenous bases.
Nitrogenous Bases:
- Purines: Adenine, Guanine (major), hypoxanthine, xanthine, uric acid (minor).
- Pyrimidines: Cytosine, uracil, thymine (major), methyl cytosine, dihydro uracil (minor).
Nucleosides and Nucleotides: Building blocks of DNA and RNA.
Functions:
- Energy Transduction: ATP, GTP, ADP, etc., and phosphate transfer.
- Signaling: Seconal messengers (e.g., cAMP), receptor-linked G-protein pathways.
- Activated Precursors: e.g., SAM (S-adenosylmethionine), various derivatives.
- Enzyme Components: NAD, NADP, FAD, FADH2, Coenzyme A; various other coenzymes.

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Description

This quiz explores the structure and function of nitrogenous bases, nucleosides, and nucleotides in nucleic acids. It also covers the roles these molecules play in energy transduction, signaling, and enzyme components. Test your knowledge on this essential topic in chemistry.