svedbergs

Answer: 70 s ribosomes are usually present in prokaryotes and eukaryotes have 80 s ribosomes with some exceptions like mitochondria and chloroplast. Mitochondria and Chloroplasts both have 70s Ribosome, since they are evolved from prokaryotic bacteria and developed a symbiotic relationship with the cell.

Answer. Explanation: Mitochondria and chloroplast are considered as semi-autonomous organelles so they have their own nucleic acids( DNA and RNA) and 70S ribosomes. Thus, they are also known as bacterial endosymbionts.

In eukaryotic cells the ribosomes present are of 80S type, whereas in prokaryotic cells and in chloroplasts and mitochondria they are of 70S type.

Ribosomes are composed of two subunits, one large and one small, that only bind together during protein synthesis. All prokaryotes have 70S (where S=Svedberg units) ribosomes while eukaryotes contain larger 80S ribosomes in their cytosol. The 70S ribosome is made up of a 50S and 30S subunits.

Ribosomes are composed of two subunits, they are: A. The small ribosomal subunits- these subunits read the mRNA….Difference Between 70S and 80S Ribosomes.

The letter ′S means Svedberg’s Unit and it stands for sedimentation coefficient; in ribosome.

Eukaryotic cells contain 80S ribosomes in the rough endoplasmic reticulum (membrane bound-ribosomes) and cytoplasm (free ribosomes). They contain 70s ribosomes in mitochondria and chloroplasts.

The small subunit is responsible for the binding and the reading of the mRNA during translation. The small subunit, both the rRNA and its proteins, complexes with the large 50S subunit to form the 70S prokaryotic ribosome in prokaryotic cells. This 70S ribosome is then used to translate mRNA into proteins.

no,protists have 70s ribosomes as well as they are eukaryotes with mitochondria as well as chloroplasts. and we know both these organelles have 70s ribosomes.

Section 29.3A Ribosome Is a Ribonucleoprotein Particle (70S) Made of a Small (30S) and a Large (50S) Subunit. We turn now to ribosomes, the molecular machines that coordinate the interplay of charged tRNAs, mRNA, and proteins that leads to protein synthesis.

So, the correct answer is ‘Yeast’

Bacteria and archaebacteria possess smaller ribosomes, termed 70S ribosomes. The ribosomes in our cells, and in other animals, plants and fungi, are larger, termed 80S ribosomes, composed of a 40S small subunit and a 60S large subunit.

Ribosomes in RER are of the form 70 S ( sevdberg unit or sedimentary coefficient) . It has two subunits-50S+30S.

The E. coli 70S ribosome consists of two subunits, which are designated as the 30S subunit, comprising 16S rRNA (1542 nucleotides) and 21 proteins, and the 50S subunit, comprising 23S rRNA (2904 nucleotides), 5S rRNA (120 nucleotides), and 36 proteins. The models of E.

210-Å

Each ribosome is a complex of proteins and special RNA called ribosomal RNA (rRNA). In both prokayotes and eukaryotes active ribosomes are composed of two subunits called the large and small subunit. Bacterial ribosomes (prokaryotic) are smaller than eukaryotic ribosomes.