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Medical Biology Lecture 3: Lysosome, Cytoskeleton, and Nucleus

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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?

Lysosomes have a single lipid bilayer Signup and view all the answers

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

Cytoskeleton Signup and view all the answers

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

Genetic information storage and regulation Signup and view all the answers

What is the primary function of lysosomes?

Breaking down cellular waste and recycling cellular components Signup and view all the answers

What role do lysosomes play in autophagy?

Fusing with phagosomes to digest engulfed materials Signup and view all the answers

What maintains the acidic pH inside lysosomes?

Active transport of protons (H+) by the lysosomal membrane Signup and view all the answers

What characterizes Lysosomal Storage Disorders (LSDs)?

Accumulation of undigested substances within lysosomes Signup and view all the answers

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

Affecting the nervous system, bones, and organs Signup and view all the answers

What is the definition of the cytoskeleton?

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

What are microtubules composed of?

Tubulin proteins Signup and view all the answers

What function does the cytoskeleton serve in maintaining cell shape?

Preventing collapse and determining cell shape Signup and view all the answers

What is the role of microtubules in intracellular transport?

Acting as tracks for motor proteins Signup and view all the answers

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

Varying effects on the nervous system, bones, and other organs Signup and view all the answers