Two ribosomal subunits have sedimentation coefficients of 60S and 40S.

Two ribosomal subunits have sedimentation coefficients of 60S and 40S. Assuming that both subunits have spherical shapes and their densities are equal, calculate the ratio of their molecular weights ( not with the actual molecular weight values).

Expert Solution

The sedimentation coefficients are 60 S & 40 S

both subunits have spherical shapes & their densities are equal

1 Swedberg unit= 10^-13

Two ribosomal subunits have Sedimentation coefficient =

Large subunit= 60 S

= 60 X 10^-13

small subunit = 40S

= 40 X 10^-13

molecular mass of 60 S subunit is = 3 million gram /mole

& 40S subunit = 1.5 million gm /mole

ratio of their molecular weight = large subunit / small subunit

= 3 /1.5

= 1.5 million gram /mole

gladiator answered 2 years ago

Ribosomal subunits are believed to be manufactured in

Ribosomal subunits are believed to be manufactured in rough endoplasmic reticulum smooth endoplasmic reticulum nucleus nucleolus endosome

Erythromycin is best against bacteria because it targets bacterial ribosomal subunits and not eukaryotic ribosomal subunits....

Erythromycin is best against bacteria because it targets bacterial ribosomal subunits and not eukaryotic ribosomal subunits. What does this mean??

The ribosomal subunits are not covalently bound and are freely dissociated in the cytoplasm. Explain how...

The ribosomal subunits are not covalently bound and are freely dissociated in the cytoplasm. Explain how the two subunits come together to successfully initiate translation

Diagram the pathway for assembly in the nucleolus, maturation, and nuclear export of ribosomal subunits in...

Diagram the pathway for assembly in the nucleolus, maturation, and nuclear export of ribosomal subunits in yeast.

Which location in the cell is unlikely to contain ribosomes or ribosomal subunits? A. endoplasmic reticulum...

Which location in the cell is unlikely to contain ribosomes or ribosomal subunits? A. endoplasmic reticulum B plasma membrane C. Cytoplasm

What is translation, where does it occur? How many ribosomal subunits are there, and where are...

What is translation, where does it occur? How many ribosomal subunits are there, and where are they constructed? What are the P and A sites? What occurs during initiation, elongation, and termination and what are the three steps of elongation. What is the function of the stop codon?

Match the site on the ribosomal subunits (select A, P, or E) to each of the following reaction.

Match the site on the ribosomal subunits (select A, P, or E) to each of the following reaction. The docking site for N-formylmethionine (fMet) tRNA Binding site for the uncharged tRNA before it leaves the ribosome Peptidyl transferase center Decoding center Binding site for IF-3 Binding site for IF-1 Binding sites for incoming charged tRNA Binding site for the deacylated tRNA Binding of the EF-G occurs at this site Binding site for the tRNA attached to the growing peptide...

A reticulate lysate is a system that contains all the components required for translation (ribosomal subunits,...

A reticulate lysate is a system that contains all the components required for translation (ribosomal subunits, tRNA, amino acids, etc) and allows the reaction to be carried out in a test tube. The polypeptide that is synthesized from the system depends on the sequence of the RNA. For example adding the RNA 5’AUGUUUUUUUUUUUU to the lysate directs the synthesis of Met-Phe-Phe-Phe-Phe. 10a. If you add an antibiotic stops translation by specifically blocking the translocation of tRNA from the A site...

a. Outline the steps of the ribosome cycle. At what stage do the ribosomal subunits bind...

a. Outline the steps of the ribosome cycle. At what stage do the ribosomal subunits bind to each other? To mRNA? What causes them to dissociate when protein synthesis is complete? In detail. b. Outline the steps by which aminoacyl tRNA synthetases charge tRNAs. How can some organisms get away with having fewer than 20 synthetases, yet still charge tRNAs with all 20 amino acids? In detail.

Briefly describe how the rRNA molecules are made and processed and assembled into ribosomal subunits

Question