What are autophagosomes?
Correct answer: D. Vesicles that sequester cellular components for degradation by lysosomes
- A. Structures that degrade parts of their own cells to recycle cellular components
- B. Organelles that help in the removal of old and damaged cellular components
- C. Lysosomes that aid in extracellular digestion
- D. Vesicles that sequester cellular components for degradation by lysosomes
Explanation
The correct answer is that autophagosomes are vesicles that sequester cellular components for degradation by lysosomes. They play a crucial role in cellular homeostasis by capturing and transporting damaged organelles and proteins to lysosomes, where they are broken down and recycled. Option A and B incorrectly describe autophagosomes as lysosomes, while Option C describes a function not directly related to autophagosomes' primary role.
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About Cell Structure and Function
Animal, plant, prokaryotic and eukaryotic cells are compared through their membranes, cell walls, nuclei and cytoplasmic organelles. The work includes the structures and functions of mitochondria, chloroplasts, ribosomes, endoplasmic reticulum, Golgi apparatus and lysosomes, as well as chromosome organization and the distinction between chromatin and chromosomes.
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