Biology: Placenta, Pollination, and Progesterone
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Questions and Answers

What is the main function of ribosomes?

  • Metabolism regulation
  • DNA replication
  • Cell division
  • Protein synthesis (correct)

    • What is the role of tRNA in protein synthesis?

  • DNA replication
  • Transcription
  • mRNA synthesis
  • Translation (correct)

    • How does RNA differ from DNA?

  • RNA is double-stranded, DNA is single-stranded
  • RNA contains deoxyribose sugar, DNA contains ribose sugar
  • RNA has uracil instead of thymine, DNA has thymine (correct)
  • RNA is found only in prokaryotic cells, DNA is found only in eukaryotic cells

    • Which chromosomes determine the sex of an individual in humans?

    <p>Sex chromosomes</p> Signup and view all the answers

    What is sexual reproduction?

    <p>Reproduction involving the fusion of gametes</p> Signup and view all the answers

    Where does transcription occur during protein synthesis?

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

    What is the role of mRNA in protein synthesis?

    <p>Provides the template for protein synthesis</p> Signup and view all the answers

    How do secondary sexual characteristics differ from primary sexual characteristics?

    <p>Secondary sexual characteristics develop during puberty and are not directly involved in reproduction</p> Signup and view all the answers

    What contributes to genetic variation among individuals?

    <p>Genes, environment, or a combination of both</p> Signup and view all the answers

    What is the function of the placenta during pregnancy?

    <p>Exchange of nutrients and waste between mother and fetus</p> Signup and view all the answers

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