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Nucleic Acids and Nucleotides Quiz

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Questions and Answers

What is the primary function of nucleic acids?

Controlling cellular functions

Regulating hereditary traits

Forming the chemical basis of life

Serving as repositories and transmitters of genetic information (correct)

Who first discovered DNA?

Swiss researchers

Johann Friedrich Miescher (correct)

Avery, Macleod and MacCary

Anonymous scientists

What was the first demonstration that DNA contained genetic information?

Anonymous scientists in 1944

Avery, Macleod and MacCary in 1944 (correct)

Swiss researchers in 1869

Johann Friedrich Miescher in 1869

What is the chemical basis of heredity?

DNA Signup and view all the answers

How is DNA organized?

Into genes, the fundamental units of genetic information Signup and view all the answers

What holds the double helix structure of DNA together?

Hydrogen bonds Signup and view all the answers

Which term refers to the polymers of nucleotides held by 3' and 5' phosphate bridges?

Nucleic acids Signup and view all the answers

What are nucleotides composed of?

Nitrogenous base, pentose sugar, and phosphate Signup and view all the answers

In nucleotides, which base is found in both DNA and RNA?

Cytosine Signup and view all the answers

What is the main difference between DNA and RNA in terms of the second pyrimidine base?

DNA contains thymine while RNA contains cytosine Signup and view all the answers

What is tautomeric forms of purines and pyrimidines known as?

Tautomerism Signup and view all the answers

Which nitrogenous base is found in both DNA and RNA?

Cytosine Signup and view all the answers

What does the term 'nucleoside' refer to?

Base + sugar + phosphate Signup and view all the answers

Which of the following nitrogenous bases is a purine?

(B) Guanine Signup and view all the answers

What are the major purines found in nucleic acids?

(A) Adenine and guanine Signup and view all the answers