_____ can keep people with kidney failure alive, but it cannot cure them
Fill in the blank(s) with correct word
Dialysis
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Neurotransmitters
a. are stored in synaptic vesicles. b. are chemical signals released by neurons. c. are released from the axon via exocytosis. d. bind to receptors on target cells. e. have all of these characteristics
A more or less circular ring of mushrooms appears in your yard, apparently overnight. The circle is several yards in diameter. The most likely explanation for this circle of mushrooms is that:
A) the mushrooms are all part of the same organism, with mycelia radiating out from the location of a germinated spore. B) a circle is nature's most perfect shape for asexual reproduction structures. C) the fungus produces a toxin in the center to prevent too many mushrooms from being produced. D) one mushroom in the circle reproduced sexually to make all the other mushrooms in the circle.
_____is the ability of an organism to produce toxins
Fill in the blank(s) with the appropriate word(s).
Two hydrogen atoms (atomic number 1 ) form a covalent bond. Which of the following is true?
A) Both hydrogen atoms now have two protons in their outer shell. B) One hydrogen atom now has zero electrons in its outer shell, and the other has two. C) Both hydrogen atoms now have two electrons in their outer shell. D) Each hydrogen atom still has one electron in its outer shell. E) One hydrogen atom now has zero protons in its outer shell, and the other has two.