PLEASE ANSWER THE FOLLOWING MUTIPLE CHOICE QUESTIONS! THANK YOU! The 30S and 50S

Question

PLEASE ANSWER THE FOLLOWING MUTIPLE CHOICE QUESTIONS! THANK YOU!

The 30S and 50S ribosomal subunits are so designated to indicate. Select one: a. the number of proteins in each subunit. b. the molecular weight in kDa for each subunit. c. their sedimentation rate in a centrifuge. d. the years the subunits were first isolated, 1930 and 1950. The prokaryotic ribosome consists of Select one: a. two proteins and two RNAs. b. two RNAs and three proteins. c three subunits and two RNAs. d. three RNAs and many proteins.

Explanation / Answer

1.Answer:c -Their sedimentation rate in a centrifuge

explanation:Each subunit of ribosme are large protein molecules and are designated numbers such as 80,70,60,....in svedberg units,'S' which denotes their sedimentation coefficients.

2.Answer:d

explanation:Ribosomesa are RNA+Proteins.Prokaryotic cells usually contain 65% RNA and 35% Proteins. Prokaryotes have a 70S ribosome that includes

Therefore 3 RNA'S and many proteins is the correc answer

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