Protein X is a protein that is composed of four subunits of equal size--alpha, beta, delta, and gamma--that are bound by either noncovalent interactions or disulfide bridges. Only the beta and delta subunits are bound to each other by disulfide bridges. How many bands would you expect to see in an SDS PAGE experiment in which beta-mercaptoethanol, a reducing agent, is used?

Analogy- 1 is to arete as 5 is to cirque horn glacial valley hanging valley

Graphs you see question 5 options: the change in data over time the relationship between different dependent variables the relationship between the independent variable and the dependent variable/s the relationship between different independent variables

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?