Transcript Ribosome - Loyola Blakefield

Ribosome
BY: Clifian Dixon & Ravi Bhatt
Location in the cell
• Ribosomes are mainly found bound to the
endoplasmic reticulum and the nuclear envelope, as
well as freely scattered throughout the cytoplasm,
depending upon whether the cell is plant, animal, or
bacteria.
• How this is related to a factory is…
Structure
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Ribosomes are tiny particles
It is composed of both proteins and RNA
Ribosomes have a tertiary structure.
complex structure
Rough surface
Functions of Ribosome
• Ribosome's are the location of amino-acid
assembly within the cell ;Therefore, Ribosome's
plays a very important role in protein synthesis,
that is they receive and translate genetic
instructions for the formation of specific proteins
• Without the ribosome's the message would not
be read, thus proteins could not be produced.
• The more Ribosomes within a given cell, the
more protein production there is within the cell
Functions Cont.
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Eukaryote ribosome's are produced
and assembled in the nucleolus.
Ribosomal proteins enter the
nucleolus and combine with the four
rRNA strands to create the two
ribosomal subunits that will make up
the completed ribosome
Eukaryote ribosome's are produced
and assembled in the nucleolus.
Ribosomal proteins enter the
nucleolus and combine with the four
rRNA strands to create the two
ribosomal subunits (one small and
one large) that will make up the
completed ribosome.
Ribosome's Function in P.S.
Cells that have Ribosomes
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cytoplasm
endoplasmic reticulum.
eukaryotic cells:60-S/ 40-S subunits
Prokaryotic:50-S and 30-S subunits
Bacteria cells
Animal cells
Plant cells
Work’s Cited
• Brachet, Jean. Ribosome. Blackwell Scientific
Publications. Web. 21 December 2011
• Biology4kids. AndrewRaderStudios, January,
17,2010. 2011, Web. 21 December 2011
http://www.biology4kids.com/files/cell_rib
os.html