The kidneys help to maintain blood pressure by monitoring the pH of the blood.
Answer the following statement true (T) or false (F)
False
The kidneys help to maintain blood pressure by monitoring the water-salt balance of the blood.
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Some regions of chromosomes remain highly condensed, tightly coiled, and untranscribed throughout the cell cycle. These regions are referred to as
A. transposable elements. B. single sequence repeats. C. non-coding DNA. D. short interspersed elements. E. constitutive heterchromatin.
You have performed the following mating experiment using Hfr and F- strains of Escherichia coli: Hfr (thr+ leu+ gal+ strs) à— F- (thr- leu- gal- strr). Which of the following selective media would you use to score recombinant colonies?
A) minimal medium B) minimal medium + streptomycin C) minimal medium + threonine D) minimal medium + streptomycin + threonine
The largest waterborne epidemic ever to occur in the United States occurred in which of the following cities?
A) Chicago B) Los Angeles C) Milwaukee
In which of the following is there a counterflow of filtrate?
a. distal convoluted tubule b. loop of Henle c. proximal convoluted tubule d. collecting duct e. glomerulus