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s stands for sedimentation coefficient defined as how fast a cell organelle sediment in ultra centrifuge . As sedimentation coefficient are not additive so that 50s plus30s is not equal to 80s but it is 70s[prokaryotic]

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Q: Why prokaryotic ribosome 50s plus 30s equal 70s not 80s?
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what is the cell found in ribosomes?

ribosomes are not cells, they are organelles that produce and synthesize proteins. get it straight!


What two things make up ribosomes and are are ribosomes surrounded by membrane like other organelles?

Ribosomes are not membrane bound, they are free cytoplasmic organelles responsible for the translation of cytoplasmic mRNA's. When a ribosome begins to synthesize proteins that are needed in some organelles, the ribosome making this protein can become "membrane-bound". In eukaryotic cells this happens in a region of the endoplasmic reticulum (ER) called the "rough ER". The newly produced polypeptide chains are inserted directly into the ER by the ribosome and are then transported to their destinations. Ribosome in eukaryotes are called 80S ribosomes and consist of a small 40S subunit and a larger 60S subunit. Prokaryotes have 70S ribosomes consisting of a 30S and 50S subunits. Hope this helps.


What is the 30S and 50S?

The 30S and 50S are two subunits that form a ribosome in prokaryotes. The 30 and 50 denote the individual size of each part, and the 'S' stands for Svedberg unit.


What is the meaning of 70S ribosomes in prokaryotes?

70S refers to the rate of sedimentation of the ribosome in a centrifuge. You can almost think of it as a unit of size. The "S" is a unit of measurement called the Svedberg unit. Ribosomes contain two subunits. In prokaryotes, these subunits are 50S (large) and 30S (small). The total ribosome with both subunits is 70S in prokaryotes. (Notice that 30 + 50 = 80 and not 70. Remember this is not size and the rate of sedimentation is less when the subunits are bound then when they are separated.) Eukaryotic cells have 80S ribosomes: 60S (large) and 40S (small) subunits.


What is 70s ribosomes?

70s ribosomes are prokaryotic ribosomes found in bacteria and some organelles like mitochondria and chloroplasts. They consist of a small 30s subunit and a large 50s subunit, which together form a functional ribosome for protein synthesis.


What does kanamycin target?

Kanamycin targets bacterial ribosomes by inhibiting protein synthesis, leading to the disruption of bacterial growth and ultimately cell death.


The sites A P and E are occupied by amino acids being assembled into a chain of polypeptide what are they part of?

The sites A, P, and E are part of the ribosome, the cellular machinery responsible for protein synthesis. The A site binds incoming aminoacyl-tRNA, the P site holds the growing polypeptide chain, and the E site exits the empty tRNA after its amino acid is transferred to the growing chain.


What correctly identifies the ribsomes within the prokaryotic cell?

Ribosomes in prokaryotic cells are identified as small and numerous granules present in the cytoplasm. They are responsible for protein synthesis by translating messenger RNA into proteins. Prokaryotic ribosomes are comprised of a small 30S subunit and a large 50S subunit, with a total size of 70S.


What type of ribosome is found in prokaryotic and eukaryotic cell?

Both prokaryotic and eukaryotic cells have ribosomes, but prokaryotic ribosomes are smaller and consist of a 30S and 50S subunit (70S total), while eukaryotic ribosomes are larger and consist of a 40S and 60S subunit (80S total).


Why ribosomes are of 70s in mitochondria of eukaryotic cell?

Prokaryotes have 70S ribosomes, each consisting of a small (30S) and a large (50S) subunit.


How does streptomycin kill bacterial cells?

Streptomycin kills bacterial cells by binding to the bacterial ribosome and causing misreading of the genetic code during protein synthesis. This leads to the production of faulty proteins, disrupting essential cellular processes and ultimately killing the bacteria.


Which one have the larger ribosomes prokaryotes or eukaryote?

Eukaryotes have larger ribosomes compared to prokaryotes. Prokaryotic ribosomes are smaller and composed of a 30S and 50S subunit, while eukaryotic ribosomes are larger and made of a 40S and 60S subunit.