Lysosomes are organelles within cells that are responsible for digesting macromolecules. They are membrane-bound and contain hydrolytic enzymes that can break down a wide variety of biomolecules. Lysosomes are often referred to as the 'cell's garbage disposal' because they can break down excess or damaged cellular material. While lysosomes have many important functions, they are also implicated in a number of diseases, including cancer.
So, which accurately labels the lysosome? If we consider the function of lysosomes, then 'garbage disposal' is probably the most accurate label. However, if we take into account the diseases associated with lysosomes, then 'cancer cell' might be a more accurate label. Ultimately, it depends on how you look at it.
Frequently Asked Questions
What is a lysosome?
A lysosome is a membrane-bound cell organelle that contains digestive enzymes. Lysosomes are involved with various cell processes. They break down excess or worn-out cell parts. They may be used to destroy invading viruses and bacteria.
Do vacuoles have enzymes similar to lysosomes in animal cells?
Recent discoveries suggest that the function of vacuoles is quite similar to the functions of a lysosome in animal cells. Furthermore, findings suggest that these vacuoles possess hydrolytic enzymes similar to the ones found in animal cells.
Why is the pH of lysosomes acidic?
The pH of lysosomes is acidic (around pH 5) because their hydrolytic enzymes function best at this pH instead of at the neutral pH of the rest of the cell. Hydrolytic enzymes specifically break down large molecules through hydrolysis. During the process of hydrolysis, a molecule of water is added to a substance, and this molecule splits into H+ ions and an atom or molecule of elemental hydrogen.
What is the function of lysosome?
The lysosome is responsible for the digestion of macromolecules, old cell parts, and microorganisms.
Are lysosomes exclusive to animal cells?
There is no definitive answer to this question, as recent discoveries in plant cells have shown that lysosomes can also be found in these cells. However, the traditional view, based on studies only of animal cells, remains more widespread.
Sources
- https://quizlet.com/484369089/map3-lymphaticimmune-system-flash-cards/
- https://www.sciencedirect.com/science/article/pii/S0092867418313084
- https://www.hindawi.com/journals/dm/2022/8789515/
- https://www.nature.com/articles/s41592-020-01010-5
- https://www.nature.com/articles/s41551-016-0010
- https://jackwestin.com/resources/mcat-content/aamc-mcat-practice-exam-4-bb-solutions/
- https://onlinelibrary.wiley.com/doi/10.1002/smsc.202200012
- https://www.academia.edu/37006818/Junqueiras_Basic_Histology_Text_and_Atlas_14th_Edition
- https://www.academia.edu/33033502/MICROBIOLOGY_and_IMMUNOLOGY_pdf
- https://doku.pub/documents/nelson-biology-12pdf-30j71j2z320w
- https://www.thoughtco.com/hormones-373559
- https://www.thoughtco.com/lysosomes-cell-organelles-373357
- https://sciencetrends.com/many-functions-lysosomes/
- https://pubmed.ncbi.nlm.nih.gov/30465198/
- https://www.alzforum.org/news/research-news/tmem175-maintains-lysosome-ph-pushing-out-protons
- https://en.wikipedia.org/wiki/Cathepsin_G
- https://en.wikipedia.org/wiki/Christian_de_Duve
- https://www.nature.com/articles/s41556-022-00926-8
- https://www.nature.com/articles/s41467-022-28520-4
- https://onlinelibrary.wiley.com/doi/10.1002/adma.202203309
- https://www.genome.gov/genetics-glossary/Lysosome
- https://www.ncbi.nlm.nih.gov/books/NBK9953/
- https://journals.plos.org/plosgenetics/article
- https://www.thoughtco.com/what-is-endocytosis-4163670
- https://www.britannica.com/science/endoplasmic-reticulum
- https://www.ncbi.nlm.nih.gov/gene/3916
- https://biologydictionary.net/liposome/
- https://en.wikipedia.org/wiki/Cytoskeleton
- https://en.wikipedia.org/wiki/Peroxisome
- https://quizlet.com/518747484/bio-111-practice-questions-flash-cards/
- https://pubs.acs.org/doi/10.1021/jacs.2c03832
- https://www.vedantu.com/biology/cell-organelles
- https://www.sciencedirect.com/science/article/pii/S0142961222002976
- https://www.academia.edu/34883849/ESSENTIAL_CELL_BIOLOGY_ESSENTIAL_CELL_BIOLOGY
- https://pubs.rsc.org/en/content/articlelanding/2022/cs/d0cs01414a
- https://www.cellsalive.com/cells/cell_model.htm
- https://fr.wikipedia.org/wiki/Lysosome
- https://sciencing.com/lysosome-definition-structure-function-13717289.html
- https://www.nature.com/articles/s41423-022-00892-z
- https://th.wikipedia.org/wiki/%E0%B9%84%E0%B8%A5%E0%B9%82%E0%B8%8B%E0%B9%82%E0%B8%8B%E0%B8%A1
- https://quizlet.com/486708288/ap-1-chapter-3-quiz-questions-flash-cards/
- https://quizlet.com/475043076/prokaryotic-and-eukaryotic-cells-flash-cards/
- https://en.wikipedia.org/wiki/Vesicle_(biology_and_chemistry)
- https://www.biologyonline.com/dictionary
- https://en.wikipedia.org/wiki/Autolysis_%28biology%29
- https://rwu.pressbooks.pub/bio103/chapter/membrane-transport/
- https://www.shaalaa.com/textbook-solutions/selina-solutions-concise-biology-class-10-icse_30
- https://www.biologyonline.com/
- https://www.vocabulary.com/lists/143915
- http://tismo.cistrome.org/
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