An accident victim lost a lot of blood and was rushed to the emergency room. In the emergency room, the first thing the doctors did was replace lost fluids by giving an IV of pure water. But this caused the patient to die. Propose a reason why the
patient died.
What will be an ideal response?
Pure water is hypotonic to the cells in the blood. This would cause blood cells to swell and burst, which could lead to the death of the patient.
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Why does the process of making biofuels from weeds and other plant matter require additional steps?
a. They contain a higher proportion of cellulose than corn, soy or sugarcane. b. They contain a lower proportion of cellulose than corn, soy or sugarcane. c. They contain a higher proportion of starch than corn, soy or sugarcane. d. They contain a higher proportion of ethanol than corn, soy or sugarcane. e. They contain a lower proportion of ethanol than corn, soy or sugarcane.
Which of the following enzymes catalyzes the formation of a new 5' -3' strand of
A) helicase B) ligase C) single-stranded binding protein D) DNA polymerase
Which muscle contraction is involuntary?
A. cardiac only B. smooth only C. skeletal only D. cardiac and smooth E. cardiac, smooth, and skeletal
Which situation represents an example of territorial behavior?
A) Digger wasps are able to recognize the pattern of landmarks around their nests. B) Sow bugs become more active and move around randomly if they find themselves in a dry area. C) Gannets breed in dense colonies. Each gannet defends the area within the beak's reach of its nest, but gannets feeding at sea are indifferent to each other. D) Troops of monkey species use well-defined, widely overlapping ranges. Troops avoid encountering each other and are aggressive if they meet.