Astrain of bacteria possesses a temperature-sensitive mutation in the gene that encodes the sigma factor. the mutant bacteria produce a sigma factor that is unable to bind to rna polymerase at elevated temperatures. what effect will this mutation have on the process of transcription when the bacteria are raised at elevated temperatu

Which statement describes john tuzo wilson’s contribution to the theory of plate tectonics?

High blood pressure occurs when there is too much blood flowing through the blood vessels at one time. by changing the amount of water in the blood, blood pressure can change. the excretory system can to lower blood pressure.which would most likely occur in the kidney? a)more water would be transferred from the nephron.b)less water would be absorbed into the nephron.c)the amount of water in the bladder would decrease.d)the amount of water in the blood would increase.

Molecules like glucose and amino acids are not lipid soluble, so cannot cross the cell membrane by simple diffusion. instead, they are shuttled across by carrier proteins in the membrane from high to low concentration. does this process require energy from the cell? this is an example of what type of molecular movement?