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Cell structure and function-protein synthesis

Cell structure and function-protein synthesis. What is protein synthesis?. Messenger RNA from the cell nucleus is moved systemically along the ribosome where transfer RNA adds individual amino acid molecules to the lengthening protein chain. Ribosomes. Structure

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Cell structure and function-protein synthesis

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  1. Cell structure and function-protein synthesis

  2. What is protein synthesis? • Messenger RNA from the cell nucleus is moved systemically along the ribosome where transfer RNA adds individual amino acid molecules to the lengthening protein chain

  3. Ribosomes Structure • They are packets of RNA and protein • They are the site of protein synthesis • Each ribosome comprises of two parts, a large subunit and a small subunit Function • Help make proteins

  4. Rough endoplasmic reticulum Structure • It appears "pebbled“ (rough) by electron microscopy due to the presence of numerous ribosomes on its surface Function • It transports proteins made by ribosomes to Golgi apparatus for secretion out of the cell

  5. Golgi apparatus(body and vesicles) Structure It is a membrane-bound structure with a single membrane Function • (Golgi body) Stores and modifies substances made by smooth and rough ER • Packages these substances in vesicles for secretion out of cell • (Golgi vesicles) Cell secretions-eg: hormones, neurotransmitters(the brain chemicals that communicate information throughout our brain and body) are packaged in secretory vesicles by the Golgi body • The secretory vesicles are then transported to the cell surface for release

  6. QUIZ TIME!!!!!

  7. QUESTION 1!

  8. What is a Golgi apparatus?

  9. Hmm…who wants answer?ehh…answer got prize okay!

  10. Okay answer is…. The golgi apparatus is a mebrane-bound structure with a single membrane

  11. QUESTION 2!

  12. What are neurotransmitters?

  13. Raise your hand…. Don’t shout this is not a market!! And I just covered that just now. I can’t believe you forgot..:(

  14. Okay answer… Neurotransmitters are the brain chemicals that communicate information throughout our brain and body

  15. Question 3!

  16. What does each ribosome comprise of?

  17. Don’t know ah?? HINT: Subunits!

  18. Okay answer… Each ribosome comprises of two parts,a large subunit and a small subunit

  19. QUESTION 4!

  20. What is the process of protein synthesis?

  21. Okay answer… Messenger RNA from the cell nucleus is moved systemically along the ribosome where transfer RNA adds individual amino acid molecules to the lengthening protein chain

  22. QUESTION 5!

  23. Why does the rough endoplasmic reticulum appear “pebbled”?

  24. Okay answer… It appears "pebbled" by electron microscopy due to the presence of numerous ribosomes on its surface

  25. Okay that’s all! Thank you! Done by: Teflyn Phua(31) Tiffany Ng(32) Val Low(33) Wang Jia Yi(34) Emerlynn Wee(35) 1 Unity

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