Microbial Genetics: Understanding Genes and Nucleic Acids
30 Questions
0 Views

Microbial Genetics: Understanding Genes and Nucleic Acids

Created by
@BrightestProbability

Podcast Beta

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What is the basic structural unit of DNA?

  • Codons
  • Chromosomes
  • Genes
  • Nucleotides (correct)

    • Which type of nucleic acid is a single-stranded structure?

  • Both DNA and RNA
  • Ribonucleic acid (RNA) (correct)
  • Deoxyribonucleic acid (DNA)
  • Neither DNA nor RNA

    • What is a gene?

  • Group of three nucleotides acting as a code for amino acids
  • Segment of DNA that codes for a functional product (correct)
  • Segment of RNA that codes for a functional product
  • Chromosome composed of DNA and RNA

    • What is the complete genetic information of a cell called?

    <p>Genome</p> Signup and view all the answers

    Which type of molecule is a nucleotide composed of?

    <p>Nitrogenous Base, Phosphate group, Pentose sugar</p> Signup and view all the answers

    What is the role of a codon in DNA?

    <p>Codes for a functional product</p> Signup and view all the answers

    Which of the following nitrogenous bases are found in RNA?

    <p>Adenine, Guanine, Cytosine, Uracil</p> Signup and view all the answers

    Which type of radiation induces the formation of thymine-thymine dimers?

    <p>Non-ionizing radiation</p> Signup and view all the answers

    What is the difference between DNA and RNA in terms of sugar composition?

    <p>DNA has Deoxyribose sugar, while RNA has Ribose sugar</p> Signup and view all the answers

    Which chemical agent converts cytosine to uracil, forming hydrogen bonds with adenine rather than guanine?

    <p>Nitrous acid</p> Signup and view all the answers

    What type of mutation occurs when a point mutation changes a codon for an amino acid into a stop codon?

    <p>Non-sense mutation</p> Signup and view all the answers

    What is the term for substitution of one nucleotide for another during DNA replication?

    <p>Transition</p> Signup and view all the answers

    What are the two nitrogenous bases that contain 2 nitrogenous rings?

    <p>Adenine and Guanine</p> Signup and view all the answers

    Which of the following is true about plasmids?

    <p>Plasmids are double-stranded circular DNA molecules</p> Signup and view all the answers

    Genes are made up of single-stranded RNA structures.

    <p>False</p> Signup and view all the answers

    Nucleotides are composed of four types of molecules.

    <p>False</p> Signup and view all the answers

    Ribonucleic acid (RNA) is a double-stranded structure like DNA.

    <p>False</p> Signup and view all the answers

    Plasmids are essential for the transfer of genetic information from one generation to the next.

    <p>False</p> Signup and view all the answers

    A codon consists of two nucleotides in DNA that act as a code for placing an amino acid in a protein molecule.

    <p>False</p> Signup and view all the answers

    Deoxyribonucleic acid (DNA) is composed of a single strand of nucleotides.

    <p>False</p> Signup and view all the answers

    Plasmids are composed of double-stranded circular DNA molecules.

    <p>True</p> Signup and view all the answers

    Sense mutation results in a new codon coding for a different amino acid.

    <p>False</p> Signup and view all the answers

    Non-ionizing radiations, such as UV rays, have much more energy and penetrating power than ionizing radiation.

    <p>False</p> Signup and view all the answers

    Induced mutations occur naturally, about one in every million to one in every billion divisions.

    <p>False</p> Signup and view all the answers

    Thymine-thymine dimers complementary base pair with the nucleotides, allowing the replication of DNA strand to continue.

    <p>False</p> Signup and view all the answers

    Transversion involves the replacement of purine with pyrimidine or pyrimidine with purine.

    <p>True</p> Signup and view all the answers

    Nitrous acid converts cytosine to thymine, forming hydrogen bonds with adenine rather than guanine.

    <p>False</p> Signup and view all the answers

    Mutation is a change in the amino acid sequence of a protein.

    <p>False</p> Signup and view all the answers

    Purines contain 1 nitrogenous ring and pyrimidines contain 2 nitrogenous rings.

    <p>False</p> Signup and view all the answers

    MRNA, rRNA, and tRNA are all types of RNA found in DNA.

    <p>False</p> Signup and view all the answers

    More Like This

    Use Quizgecko on...
    Browser
    Open
    Browser
    Browser