The genes encoding the enzymes for arginine biosynthesis are located at several positions around the genome of E. coli. The ArgR transcription regulator coordinates their expression. The activity of ArgR is modulated by arginine. Upon binding arginine, ArgR dramatically changes its affinity for the regulatory sequences in the promoters of the genes for the arginine biosynthetic enzymes. a. Given that ArgR is a transcriptional repressor, would you expect ArgR would bind more tightly, or less tightly, to the regulatory sequences when arginine is abundant.
b. If ArgR functioned instead as a transcription activator, would you expect the binding of arginine to increase, or decrease, its affinity for its regulatory sequences

What are the steps of how energy is transformed in plant cells?

Turtle hatchling survivorship rate is low in many turtle species due to predation. amanda researched the predatory rate on a species of turtle eggs in the red river. the eggs were harvested from trapped turtles and the egg's cloaca film (reproductive discharge) was either washed off or left on once gathered. research suggests that predators use the female's cloaca scent to locate the eggs. the eggs were only handled when wearing gloves and then reburied along islands where the turtles were trapped. the nests were monitored by cameras and manually on foot and data on nest predation were recorded. a. based on the experimental design, what is the dependent variable? b. based on the experimental design, what is the independent variable? c. based on the experimental design, what is the control?

How does this experiment explain why it is often milder in areas such as coastal maryland while areas such as kansas or iowa have more extremes in temperature