Neoplasia and Cell Growth in Biology

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Questions and Answers

What is the most frequent type of cancer in children?

  • Leukemia (correct)
  • Wilm's Tumor
  • Brain Tumor
  • Osteogenesis Sarcoma

The overall survival rate for children with cancer is currently 83%.

True (A)

What does the term 'neoplasm' mean?

new growth

What is the 5-year survival rate for acute lymphoblastic leukemia, which is the most common form of childhood cancer?

<p>90% (B)</p> Signup and view all the answers

Match the following types of cancer with their categories:

<p>Leukemia = Blood-forming element cancer Osteogenesis Sarcoma = Bone cancer Wilm's Tumor = Kidney cancer</p> Signup and view all the answers

The rate of a cell cycle is influenced by __________ factors.

<p>outside stimuli</p> Signup and view all the answers

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Study Notes

Neoplasia

  • Uncontrolled, chaotic growth of cells
  • Cancerous cells don't respond to normal growth control mechanisms
  • Neoplasm refers to new, abnormal growth
  • Cancer in children is rarer than injury or infection
  • A leading cause of death in children under 15
  • Overall 5-year survival rate for childhood cancer is 83%
  • 5-year survival rate for acute lymphoblastic leukemia is 90%

Cell Growth

  • Normal cell cycle has an interphase (resting) and mitosis (dividing) phase
  • Interphase has 4 stages: GO, GI, S, and G2
  • Cell lifespan varies based on tissue type
  • Cell cycle speed changes due to factors like hypoxia, genetics, immunity, physical agents, and chemical agents
  • Organs have cells in both resting and active states
  • Cells recognize their own type

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