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Test 2 (Set 2)

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Terms in this set (12)

  • What do lysosomes contain to break down unwanted materials?
    Lysosomes contain enzymes that allow them to break down unwanted materials and cellular wastes.
  • Which statement about introns is incorrect?
    Introns are not ligated during splicing; they are removed, not joined together.
  • What is the important checkpoint in the middle of mitosis?
    The Metaphase checkpoint ensures the cell is ready to divide.
  • What is the role of the contractile ring during cytokinesis in animal cells?
    It pinches the cell membrane inward to divide the cell into two daughter cells.
  • Which enzyme is responsible for proofreading newly synthesized DNA?
    DNA polymerase proofreads the newly synthesized DNA strand.
  • What does each group of three nucleotides encode in protein synthesis?
    Each group of three nucleotides, called a codon, encodes one amino acid.
  • Which adipocytes are primarily used for thermoregulation?
    Brown adipocytes are primarily utilized for thermoregulation.
  • What are osteocytes and their function?
    Osteocytes are mature bone cells residing in lacunae; they maintain the bone matrix and communicate with other bone cells.
  • What is the primary function of muscle tissue?
    The primary function of muscle tissue is to facilitate movement.
  • Which statement about fibroblasts is incorrect?
    None are incorrect; fibroblasts produce extracellular components, synthesize collagen, and contribute to wound healing.
  • What genetic condition is characterized by excessive hair growth on the face and body?
    Hypertrichosis is characterized by excessive hair growth on the face and body.
  • What condition causes spoon-shaped nails (koilonychia)?
    Koilonychia causes concave nails with raised edges, often linked to iron deficiency or other systemic conditions.