Nucleic Acid Structure Basics

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Questions and Answers

What is the name of the sugar found in DNA molecules?

  • Glucose
  • Deoxyribose (correct)
  • Ribose
  • Fructose

Which of the following is NOT a nitrogenous base found in DNA?

  • Adenine
  • Guanine
  • Uracil (correct)
  • Cytosine

According to Chargaff's rule, which of the following base pairs is NOT found in DNA?

  • Cytosine-Cytosine
  • Adenine-Adenine (correct)
  • Adenine-Thymine
  • Cytosine-Guanine

What is the chemical linkage between monomer units in nucleic acids?

<p>Phosphodiester bond (C)</p> Signup and view all the answers

According to Chargaff's rule, what is the relationship between the DNA bases?

<p>Adenine pairs with thymine, and guanine pairs with cytosine (D)</p> Signup and view all the answers

What is the function of RNA in the cell?

<p>RNA is involved in the transcription and translation of genetic material. (C)</p> Signup and view all the answers

Which of the following is a type of DNA?

<p>Deoxyribonucleic acid (DNA) (D)</p> Signup and view all the answers

What is the main difference between the A-form and B-form of DNA?

<p>A-form DNA has a left-handed helix, while B-form DNA has a right-handed helix (C)</p> Signup and view all the answers

What is the relationship between the major groove and minor groove in DNA?

<p>The major groove and minor groove are critical for the binding of regulatory proteins (C)</p> Signup and view all the answers

What is the significance of the B-to-Z transition in DNA?

<p>The B-to-Z transition is a radical change in DNA structure that may play a role in gene regulation (D)</p> Signup and view all the answers

What is the primary function of mitochondrial DNA (mtDNA)?

<p>mtDNA encodes the majority of mitochondrial proteins (D)</p> Signup and view all the answers

How many base pairs are present in each turn of the Z-form DNA helix?

<p>12 base pairs per turn (A)</p> Signup and view all the answers

What is the correct base pairing in the DNA double helix?

<p>Adenine (A) pairs with Thymine (T), and Cytosine (C) pairs with Guanine (G) (C)</p> Signup and view all the answers

What is the name of the nucleotide that contains the nitrogenous base Guanine (G)?

<p>Deoxyguanylate (G) (B)</p> Signup and view all the answers

What is the name of the nucleotide that contains the nitrogenous base Cytosine (C)?

<p>Deoxycytidylate (C) (A)</p> Signup and view all the answers

What is the name of the nucleotide that contains the nitrogenous base Thymine (T)?

<p>Deoxythymidylate (T) (B)</p> Signup and view all the answers

What is the name of the nucleotide that contains the nitrogenous base Adenine (A)?

<p>Deoxyadenosine (A) (A)</p> Signup and view all the answers

What is the structure of the DNA double helix?

<p>The DNA double helix is a twisted ladder-like structure with antiparallel strands. (A)</p> Signup and view all the answers

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