Positive Feedback Mechanisms in the Body

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Questions and Answers

What organelle is responsible for breaking down fragments of organelles and large molecules inside the cell?

  • Golgi apparatus (correct)
  • Endoplasmic reticulum
  • Mitochondria
  • Nucleus

Which type of cells contain lysosomes with enzymes that digest foreign material like microbes?

  • Skin cells
  • White blood cells (correct)
  • Nerve cells
  • Muscle cells

Which type of protein fibers provide structural support, maintain cell shape, and allow contraction in muscle cells?

  • Endosomes
  • Centrosomes
  • Microfilaments (correct)
  • Microtubules

What is the function of microtubules in the cell?

<p>Cell movement (C)</p> Signup and view all the answers

What directs the organization of microtubules within the cell?

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

What do cell extensions mainly consist of?

<p>Microtubules (C)</p> Signup and view all the answers

Which organelle consists of tiny protein fibers forming an extensive network in the cell?

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

What is the function of fibroblasts within cells?

<p>Structural support &amp; contraction (D)</p> Signup and view all the answers

What is the role of centrioles within a centrosome?

<p>Organizing microtubules (B)</p> Signup and view all the answers

What do microvilli mainly cover on certain types of cells?

<p>Cell surface (B)</p> Signup and view all the answers

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