Endosymbiotic Theory in Biology
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Questions and Answers

What is the most common shape of prokaryotic cells?

  • Pyramids
  • Cubes
  • Spheres (correct)
  • Cylinders
  • What is the important component found in bacterial cell walls?

  • Chitin
  • Lipids
  • Peptidoglycan (correct)
  • Cellulose
  • How do scientists classify many bacterial species based on cell wall composition?

  • Gram Stain (correct)
  • Alcohol Stain
  • Basic Stain
  • Acid Stain
  • What structure in prokaryotes allows them to stick to their substrate or other individuals in a colony?

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

    What is the main mechanism used by motile bacteria to propel themselves?

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

    What is the ability of bacteria to move toward or away from certain stimuli called?

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

    What is the role of Agrobacterium in genetic engineering?

    <p>Assisting in the introduction of foreign genes into plants</p> Signup and view all the answers

    Which bacterium causes blindness and nongonococcal urethritis through sexual transmission?

    <p>Chlamydia trachomatis</p> Signup and view all the answers

    What is the ecological relationship where two different species live in close contact and both benefit?

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

    Which of the following bacteria are known for causing anthrax?

    <p>Bacillus anthracis</p> Signup and view all the answers

    What is the primary role of Gram-Positive Bacteria known as Actinomycetes?

    <p>Decomposing soil</p> Signup and view all the answers

    How do pathogenic prokaryotes primarily cause disease?

    <p>By releasing exotoxins or endotoxins</p> Signup and view all the answers

    What is the main process involved in the origin of engulfment chloroplast in eukaryotes?

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

    Which evolutionary novelties were adaptations of land plants for transitioning from an aquatic environment to living on land?

    <p>Outer cuticle</p> Signup and view all the answers

    What is the formal name for land plants or embryophytes?

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

    Which process resulted in the condition of two species living together in close contact?

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

    What is the significance of the fixation of CO2 by plants on Earth?

    <p>Establishment of an ozone layer</p> Signup and view all the answers

    Why are land plants considered a natural, monophyletic group while photosynthetic eukaryotes as a whole are unnatural, paraphyletic group?

    <p>Due to their adaptation to living on land</p> Signup and view all the answers

    Which group of protists are known for having cell walls made of hydrated silica?

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

    What distinguishes Euglenozoa as a clade?

    <p>Flagella with a crystalline rod inside</p> Signup and view all the answers

    Which group of protists include colonial freshwater chlorophytes?

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

    What is the main nutritional characteristic of Amoeba?

    <p>Absorb organic molecules or ingest large food particles</p> Signup and view all the answers

    Which group of protists are intestinal parasites with cell walls that are glass-like?

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

    What do Diatoms compose much of, making them a major component of sediments?

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

    Which term refers to the assignment of features or attributes to a taxon?

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

    What is the term for two or more forms of a character?

    <p>Character states</p> Signup and view all the answers

    Which type of key is the most common and consists of a series of two contrasting statements?

    <p>Dichotomous key</p> Signup and view all the answers

    What is the term for the formal naming of taxa according to a standardized system?

    <p>Binomial nomenclature</p> Signup and view all the answers

    In taxonomy, which term describes the arrangement of entities (taxa) into some type of order?

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

    What does the term 'monophyly' ideally refer to in defining or delimited groups of organisms?

    <p>Inclusive nature</p> Signup and view all the answers

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