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Molecular Structure of Nucleotides

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Questions and Answers

What is the primary function of adenosine triphosphate (ATP) in cells?

To facilitate the breakdown of foodstuffs

To transfer energy in various cellular reactions (correct)

To provide structural support to the cell

To regulate the concentration of OH- ions in aqueous solution

What is the term used to describe nucleotides containing ribose?

Pyrimidines

Deoxyribonucleotides

Ribonucleotides (correct)

Purinecompounds

What is the common characteristic of cytosine, thymine, and uracil?

They are all derived from a six-membered pyrimidine ring (correct)

They are all purine compounds

They are all linked to deoxyribose

They all contain a five-membered ring

What is the result of the binding of an H+ ion to a nitrogen-containing base under acidic conditions?

An increase in the concentration of OH- ions in aqueous solution Signup and view all the answers

What is the term used to describe the five-carbon sugar found in nucleotides?

Ribose or deoxyribose Signup and view all the answers

What is the function of the phosphate groups in nucleotides?

To carry one or more nitrogen-containing bases Signup and view all the answers

What is the primary function of nucleotides in the cell?

To store and retrieve biological information Signup and view all the answers

What is the type of bond formed between nucleotides during nucleic acid synthesis?

Phosphodiester bond Signup and view all the answers

What is the difference between RNA and DNA in terms of their sugar-phosphate backbone?

RNA has a backbone based on ribose, while DNA has a backbone based on deoxyribose Signup and view all the answers

Which of the following bases is found in DNA but not in RNA?

T Signup and view all the answers

What is the process by which nucleotides are linked together to form nucleic acid chains?

Condensation reaction Signup and view all the answers

What is the purpose of the base-pairing between nucleotides in different nucleic acid molecules?

To underlie heredity and evolution Signup and view all the answers