The correct answer is a. cilia
C. controls what materials will move into and out of the cell
Answer:
Four great mass extinctions.
Explanation:
Phanerozoic era is a period of time that occured in over 542 millon years. It is an era in geological history that can be divided into 3 eras.
a. Paleozic era: This era occured between 542 to 251 million years ago
b. Mesozoic era: This era occured between 251 to 65 million years ago
c. Cenozoic era:This era pictures between 65 millon years ago till this present day.
There has been been four great mass extinctions over the past 500 million years that claimed 40 percent or more of these genera during the Phanerozoic era and they are:
a. Ordovician Mass Extinction
b. Devonian Mass Extinction
c. Permian Mass Extinction.
d. Cretaceous-Tertiary (or the K-T) Mass Extinction.
Answer:
The correct answer to your question: What step in protein synthesis is most likely inhibited by the antibiotic? Would be: Ribosomal translocation.
Explanation:
During the process of translation of mRNA into a protein chain, a series of other molecules, like tRNA, which are present in the ribosomal subunits, must attach to it and begin the process of translating the codes. Once a starting codon (like in this case AUG) which when translated into tRNA will code for the amino acid fMet, is recognized by the ribosome, the full process of protein formation begins properly. However, in order for it to continue and be completed, there is a process known as ribosomal translocation which is essentially the way that a ribosome, given certain signals from the mRNA, will start sliding down the strand to continue the process of coding for the complementary tRNA sequence and the amino acids that can be coded for by that tRNA sequence. With the use of this antibiotic, the process of translocation was stopped at the point in which the synthesis of protein reached two polypetides fMet-Phe.