what mineral deficiency can lead to irregular heart beat, paralysis, death
What will be an ideal response?
potassium
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How big are most cells?
a. 10-20 nanometers b. 10-20 micrometers c. 10-20 millimeters d. 10-20 centimeters e. 10-20 meters
The first step in urine formation is ____________________, which takes places across glomerular capillaries. Fill in the blank(s) with the appropriate word(s)
Several years ago, I was crossing the border from Canada to the United States and I had a bag of Washington State apples with me
The customs officer at the border would not let me take the apples with me into the United States (and I really hated the idea of getting rid of a bag of perfectly good apples). Why did the customs officer refuse to allow me to cross the border with my apples? A) Washington State apples are considered an endangered fruit. B) Apples grown in the United States for export may be contaminated with DDT. C) There may have been a species that was not native to the United States hitching a ride on my apples. D) Economics: If I couldn't bring the apples in with me, I would have to buy my apples from a store in the United States.
How many distinct aminoacyl-tRNA synthetases does each cell make?
A. ~180 B. ~60 C. ~20 D. ~1 E. ~120