Medical Biology Lecture 3: Lysosome, Cytoskeleton, and Nucleus
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Questions and Answers

What is the main function of lysosomes?

  • Intracellular transport
  • Genetic information storage and regulation
  • Cellular waste disposal (correct)
  • Maintaining cell shape and structure

How is the membrane composition of lysosomes defined?

  • It is responsible for maintaining cell shape
  • It stores genetic information
  • It regulates intracellular transport
  • It separates the acidic interior from the cytoplasm (correct)

What type of enzymes are found in lysosomes?

  • Enzymes for intracellular transport
  • Enzymes for maintaining cell shape
  • Enzymes for breaking down macromolecules (correct)
  • Enzymes for genetic regulation

How does the membrane of lysosomes differ from the endoplasmic reticulum or the nucleus?

<p>Lysosomes have a single lipid bilayer (C)</p> Signup and view all the answers

Which cellular component is responsible for maintaining cell shape, structure, and intracellular transport?

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

What is the central role of the nucleus in cellular function?

<p>Genetic information storage and regulation (C)</p> Signup and view all the answers

What is the primary function of lysosomes?

<p>Breaking down cellular waste and recycling cellular components (C)</p> Signup and view all the answers

What role do lysosomes play in autophagy?

<p>Fusing with phagosomes to digest engulfed materials (B)</p> Signup and view all the answers

What maintains the acidic pH inside lysosomes?

<p>Active transport of protons (H+) by the lysosomal membrane (D)</p> Signup and view all the answers

What characterizes Lysosomal Storage Disorders (LSDs)?

<p>Accumulation of undigested substances within lysosomes (B)</p> Signup and view all the answers

What is a clinical manifestation of Lysosomal Storage Disorders (LSDs)?

<p>Affecting the nervous system, bones, and organs (A)</p> Signup and view all the answers

What is the definition of the cytoskeleton?

<p>A dynamic network of protein filaments providing structural support and playing crucial roles in cell shape, movement, and division (A)</p> Signup and view all the answers

What are microtubules composed of?

<p>Tubulin proteins (D)</p> Signup and view all the answers

What function does the cytoskeleton serve in maintaining cell shape?

<p>Preventing collapse and determining cell shape (D)</p> Signup and view all the answers

What is the role of microtubules in intracellular transport?

<p>Acting as tracks for motor proteins (B)</p> Signup and view all the answers

What is a common clinical manifestation of Lysosomal Storage Disorders (LSDs)?

<p>Varying effects on the nervous system, bones, and other organs (C)</p> Signup and view all the answers

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