Reproductive Strategies in Animals Quiz
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Questions and Answers

What is the size range of ostrich eggs?

  • 50-70 μm
  • 5-9 mm
  • 5-9 inches (correct)
  • 5-9 cm

    • In frog oocytes, where is the nucleus located?

  • Cytoplasmic core
  • Nucleoli
  • Vegetal pole
  • Animal pole (correct)

    • What is the primary function of lampbrush chromosomes in frog oocytes?

  • Protein synthesis
  • rRNA synthesis (correct)
  • DNA replication
  • mRNA synthesis

    • How many nucleoli are typically present in frog oocytes?

    <p>1,500</p> Signup and view all the answers

    What is the primary role of the acrosome in the sperm head?

    <p>Contain enzymes for fertilization</p> Signup and view all the answers

    Which part of the sperm cell provides ATP for its journey to the egg?

    <p>Middle piece (containing mitochondria)</p> Signup and view all the answers

    What is the term used to describe the process that involves unmasking of glycosyltransferase on the sperm plasma membrane?

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

    In mammalian fertilization, what enables spermatozoa to penetrate the corona radiata and zona pellucida?

    <p>Release of acrosin</p> Signup and view all the answers

    What is the primary function of the acrosome in a sperm cell?

    <p>To aid in fertilizing the egg by releasing enzymes to penetrate the zona pellucida</p> Signup and view all the answers

    What is the significance of capacitation in the context of mammalian fertilization?

    <p>It prepares the sperm for fertilization within the female reproductive tract</p> Signup and view all the answers

    What is the main role of lampbrush chromosomes in frog oocytes?

    <p>To synthesize mRNA</p> Signup and view all the answers

    What are the key components involved in fertilization according to the text?

    <p>Initial membrane contact, sperm entry, prevention of polyspermy, and completion of meiosis</p> Signup and view all the answers

    What is required for spermatozoa to penetrate the corona radiata and zona pellucida during mammalian fertilization?

    <p>Release of enzymes from acrosome</p> Signup and view all the answers

    What prevents polyspermy during fertilization?

    <p>Metabolic activation of the egg</p> Signup and view all the answers

    What aspect of sperm cells provides energy for their journey to the egg?

    <p>Middle piece containing mitochondria</p> Signup and view all the answers

    How does sperm penetration occur during mammalian fertilization?

    <p>By release of enzymes from acrosome leading to digestion of zona pellucida</p> Signup and view all the answers

    What characteristic distinguishes human sperm cells from other species mentioned?

    <p>No.: Around 200 million per ejaculation</p> Signup and view all the answers

    What is involved in the swimming competition mentioned in the text?

    <p>Sperm cells competing to reach and penetrate the egg</p> Signup and view all the answers

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