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Nucleotides in Cell Biology

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Questions and Answers

Which molecules are essential for the production of ribonucleic acid (RNA) and deoxyribonucleic acid (DNA)?

Deoxyribonucleotides

Ribonucleosides

Nucleotides (correct)

Proteins

What is the primary role of nucleotides in the synthesis of carbohydrates, lipids, and conjugated proteins?

Structural components

Signal transduction

Second messengers

Energy carriers (correct)

Which nucleotides function as second messengers in signal transduction pathways?

cAMP and cGMP (correct)

NAD[H] and NADP[H]

UDP-glucose and CDP-choline

Coenzyme A and FAD[H2]

What is the significance of nucleotides in cellular metabolism?

Act as energy currency Signup and view all the answers

How can purine and pyrimidine bases be acquired for nucleotide synthesis?

Both salvage pathways and de novo synthesis Signup and view all the answers

What is the composition of nucleotides?

A nitrogenous base, a pentose monosaccharide, and three phosphate groups Signup and view all the answers

Which nitrogen-containing bases are common to both DNA and RNA?

Guanine (G) and Cytosine (C) Signup and view all the answers

How do DNA and RNA differ in their pyrimidine bases?

DNA contains cytosine (C) while RNA contains uracil (U) Signup and view all the answers

What is the major difference between thymine (T) and uracil (U)?

Thymine has a methyl group while uracil does not Signup and view all the answers

What is formed when a pentose sugar is added to a base through a glycosidic bond?

Nucleoside Signup and view all the answers