An ionic bond between two atoms is formed as a result of the ______________
(a) sharing of electrons.
(b) loss of electrons from both atoms.
(c) loss of a proton from one atom.
(d) transfer of electrons from one atom to the other.
(d)
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Sharks and rays deal with the osmotic stress of living in seawater mainly by ____
a. active transport of ions into the body through the gills b. excreting nitrogenous wastes through their kidneys as urea
c. active transport of ions out of the body by chloride cells d. excreting excess salt through the actions of specialized salt glands in their heads e. maintaining high levels of urea and trimethylamine oxide in body fluids
If caloric intake is balanced with energy output, body
a. weight gain will occur. b. weight loss will occur. c. weight will remain stable. d. fat content will increase. e. protein will decrease.
How can you test the following statement using the scientific methodology? "Exam performance improves as the amount of sleep obtained the night before an exam increases."
What will be an ideal response?
The deadliest, most contagious microbes are studied under conditions of (BSL-4/BSL-3/BSL-2/BSL-1 ) containment
What will be an ideal response?