The ________ mechanism explains the movement of water and minerals through xylem
A) cohesion-tension
B) pressure-flow
C) bulk-flow
D) assisted diffusion
E) translocation
A
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Which bones make up the sole of the foot?
a. scapula b. sternum c. patella d. metacarpals e. metatarsals
If someone who is severely allergic to bee stings gets stung, the person may experience anaphylactic shock, which can cause a fatal drop in blood pressure
The drop in blood pressure is due to an inappropriate release of histamine in response to the sting. Histamine causes massive vasodilation, so how does this affect blood pressure?
_________ and __________suggested that RNA may have been the first molecule to encode genetic information.
Fill in the blank(s) with the appropriate word(s).
In 1822, the Canadian fur trader Alexis St. Martin was accidentally shot with a musket. The shot entered his left chest, fractured a rib, damaged the lungs, lacerated the diaphragm, perforated the stomach, and finally exited his body. Amazingly he survived, but the hole in his belly never completely healed. This allowed Dr. William Beaumont direct access to his stomach for experiments, and led to his discovery of the importance of stomach acid in digestion. Which body cavities did the musket shot pass through?
A. The shot entered the dorsal cavity and exited through the ventral cavity. B. The shot entered the pericardial cavity and exited through the pleural cavity. C. The shot entered the thoracic cavity and exited through the pleural cavity. D. The shot entered the thoracic cavity and exited through the abdominopelvic cavity.