How do you calculate the S-P wave interval? A . Determine the difference in the arrival of the P wave and the ending of the S wave

B. Determine the difference in the arrival of the P wave and the ending of the S wave

C. Determine the addition in the arrival of the P and S waves

D. Determine the difference between the ending of the P wave and the beginning of the S wave

The reactions that occur in the ribosome, where amino acids are combined to form proteins are anabolic or catabolic?

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?

In a cross between individuals of a species of tropical fish, all of the male offspring have long tail fins, and none of the females possess the trait. mating two of the f1 fish fails to produce females with the trait. explain the inheritance pattern of the trait.