Cell Biology Quiz: Microtubules, Cell Division, Organelles
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Questions and Answers

What is the formula for microtubule centrioles?

  • /9х3/0* (correct)
  • /9х2/2
  • /9х3/3
  • /9х2/0
  • During which process of cell division occurs a four-fold decrease in the number of chromosomes?

  • meiosis* (correct)
  • endomitosis
  • amitosis
  • mitosis
  • Which organelle is involved in the intracellular digestion of substances?

  • mitochondria
  • the peroxisome
  • Golgi complex
  • lysosomes* (correct)
  • What is a marker enzyme for peroxisomes?

    <p>catalase*</p> Signup and view all the answers

    The transfer of macromolecules through plasmolemma as a solution, colloid, or suspension is carried out by:

    <p>pinocytosis*</p> Signup and view all the answers

    What protein are microtubules composed of?

    <p>tubulin*</p> Signup and view all the answers

    During which stage does the implantation of the embryo in the uterine wall occur?

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

    How many days after fertilization does the human embryo begin to implant into the uterus?

    <p>7 days</p> Signup and view all the answers

    From which of the following does the endoderm form?

    <p>Intestinal tube</p> Signup and view all the answers

    Which of the following is derived from the embryonic ectoderm?

    <p>Ganglion plate</p> Signup and view all the answers

    What type of human placenta exists?

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

    Where do primordial germ cells form?

    <p>Endoderm of the yolk sac</p> Signup and view all the answers

    What is the allantois?

    <p>Digitule endoderm growing into the amniotic stem</p> Signup and view all the answers

    When does the acrosomal reaction occur?

    <p>Selection of sperm hyaluronidase and trypsin</p> Signup and view all the answers

    What is derived from mesenchyme splanchnotome?

    <p>Red blood cells</p> Signup and view all the answers

    What is cortical reaction?

    <p>Formation of fertilization membrane</p> Signup and view all the answers

    During which stage does the implantation of the embryo in the uterine wall occur?

    <p>Blastocyst stage</p> Signup and view all the answers

    What is the source of chorionic?

    <p>Trophoblast and extraembryonic endoderm</p> Signup and view all the answers

    When does the acrosomal reaction occur?

    <p>The penetration of sperm into the egg</p> Signup and view all the answers

    What is derived from mesenchyme splanchnotome?

    <p>Striated muscle tissue</p> Signup and view all the answers

    From which of the following does the endoderm form?

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

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