Twins
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Questions and Answers

Which type of twins result from the splitting of a single fertilized egg?

  • Fraternal twins
  • Conjoined twins
  • Triplets
  • Identical twins (correct)
  • Where does fertilization typically occur?

  • Uterus
  • Fallopian tube (correct)
  • Cervix
  • Ovary
  • What is the process by which the blastula undergoes extensive cell rearrangement to form the three germ layers?

  • Gastrulation (correct)
  • Implantation
  • Neurulation
  • Fertilization
  • What is the process by which the notochord induces the overlying ectoderm to form the neural tube?

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

    What is the role of the placenta in development?

    <p>All of the above</p> Signup and view all the answers

    Which of the following statements is true about amino acids?

    <p>There are 10 essential amino acids for humans.</p> Signup and view all the answers

    What is the function of the alpha carbon in a free amino acid?

    <p>It is bonded to four groups.</p> Signup and view all the answers

    Which of the following is true about the active site of an enzyme?

    <p>It is where a substrate binds during a reaction.</p> Signup and view all the answers

    Which amino acids are involved in catalysis at the active site of an enzyme?

    <p>Glycine, threonine, and aspartic acid</p> Signup and view all the answers

    Why are 10 amino acids considered essential for humans?

    <p>The human body cannot produce them.</p> Signup and view all the answers

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