Chemical compounds released during tobacco use can cause ____
a. sickle-cell anemia
b. color blindness
c. cancer
d. cystic fibrosis
e. hemophilia
ANSWER: c
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ADH controls how diluted or concentrated urine is by controlling the:
A. permeability of the collecting ducts to water. B. permeability of the collecting ducts to electrolytes. C. permeability of the collecting ducts to urea. D. permeability of the loops of Henle to water. E. permeability of the loops of Henle to electrolytes.
The flow of information in a cell proceeds in what sequence? View Available Hint(s)
a. from RNA to DNA to protein b. from protein to RNA to DNA c. from DNA to protein to RNA d. from DNA to RNA to protein e. from RNA to protein to DNA
As the [H3O+] of the solution decreases, the [OH-] ________.
A) increases and thus pH increases B) increases and thus pH decreases C) decreases and thus the pH decreases D) decreases and thus the pH increases
In the light microscope, DNA molecules are most visible in which of the following?
a. in the form of euchromatin b. in a cell that is dividing c. when they are in their most extended form d. during interphase e. when they are stripped of histones