In transcription: select one:
a. several amino acids are assembled by the messenger rna molecules at one time.
b. a special sequence called a promoter is necessary for transcription to begin.
c. certain polypeptide sequences are governed by one ribosome, while other sequences are produced by other ribosomes.
d. the transfer rna molecules arrange the messenger rna codons into the appropriate sequence.
e. none of these.

What is the value of keq for the reaction expressed in scientific notation?

Answer asap need by wednesday morning explain how a buffer works, using an ethanoic acid/sodium ethanoate system including how the system resists changes in ph upon addition of a small amount of base and upon addition of a small amount of acid respectively. include the following calculations in your i. calculate the ph of a solution made by mixing 25cm3 0.1m ch3cooh and 40cm3 0.1m ch3coo-na+. [ka = 1.74 x 10-5 m] ii. calculate the ph following the addition of a 10cm3 portion of 0.08 m naoh to 500cm3 of this buffer solution. iii. calculate the ph following the addition of a 10cm3 portion of 0.08 m hcl to 200cm3 of the original buffer solution.

Ab c or d ? i’m not sure what the answer is