DNA Structure and Base Pairing

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Questions and Answers

What is the significance of the sequence of nucleotides in DNA?

  • It determines the information encoded in the DNA molecule (correct)
  • It determines the type of sugar molecule in the DNA structure
  • It determines the shape of the DNA double helix
  • It determines the type of nitrogenous base paired with another

What is the characteristic of a purine base in DNA?

  • It has a two-ring structure (correct)
  • It has a one-ring structure
  • It is always paired with another purine base
  • It is always paired with a pyrimidine base

What is the process by which DNA makes a copy of itself?

  • Translation
  • DNA replication (correct)
  • Transcription
  • Protein synthesis

What is the role of RNA in the process of protein synthesis?

<p>To transmit the DNA message from the nucleus to the rest of the cell (C)</p> Signup and view all the answers

What is the result of the base pairing rule in DNA?

<p>A purine base is always paired with a pyrimidine base (A)</p> Signup and view all the answers

What is the primary function of messenger RNA (mRNA) in protein synthesis?

<p>To carry genetic information from DNA to the ribosome (B)</p> Signup and view all the answers

What is the characteristic of the DNA replication process?

<p>It is a semi-conservative process, where half of the old strand is saved (C)</p> Signup and view all the answers

During transcription, what is the role of RNA nucleotides?

<p>To match up to complementary DNA nucleotides (C)</p> Signup and view all the answers

What is the chart that shows the correspondence between codons and amino acids?

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

What is the process by which proteins are made from RNA?

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

What is the term for the chromosomal material in its decondensed, threadlike state?

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

What is the theory that explains how chromosomes carry genetic information?

<p>Chromosomal Theory of Inheritance (B)</p> Signup and view all the answers

What percentage of DNA is similar between two random humans?

<p>99.9% (A)</p> Signup and view all the answers

What is the function of proteins in living organisms?

<p>To perform all the actions of living things (A)</p> Signup and view all the answers

What is the structure of DNA according to the Watson and Crick model?

<p>A ladder-like structure called a Double Helix (C)</p> Signup and view all the answers

Who performed X-ray diffraction of DNA in 1952?

<p>Rosalind Franklin (D)</p> Signup and view all the answers

What is the primary function of DNA?

<p>To store genetic information (D)</p> Signup and view all the answers

What is the approximate number of base pairs in human DNA?

<p>3 billion (C)</p> Signup and view all the answers

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