Which of the following statements is true?

a
Each amino acid in a protein is coded for by three bases in the DNA.
b
Each gene codes for three proteins.
c
Each triplet has many different meanings.
d
It takes three genes to code for one protein.
e
Each DNA base codes for three amino acids.

In attempt to solve the working problems created by the industrial revolution, the united states and many countries in europe considered and/or adopted

Keeping in mind the life cycle of bacteriophages, consider the following problem: during the reproductive cycle of a temperate bacteriophage, the viral dna inserts into the bacterial chromosome where the resultant prophage behaves much like a trojan horse. it can remain quiescent, or it can become lytic and initiate a burst of progeny viruses. several operons maintain the prophage state by interacting with a repressor that keeps the lytic cycle in check. insults (ultraviolet light, for example) to the bacterial cell lead to a partial breakdown of the repressor, which in turn causes the production of enzymes involved in the lytic cycle. as stated in this simple form, would you consider this system of regulation to be operating under positive or negative control?

The activity of the modern sample is 1.10 bq . how long does that measurement take?