Regardless of type, all levers follow the same basic principle:
effort farther than load from fulcrum = mechanical advantage; effort nearer than load to fulcrum = mechanical disadvantage.
Indicate whether the statement is true or false
TRUE
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The filtration barrier in the renal corpuscle consists of which three layers?
A) filtration slits, foot processes, and slit pores B) fenestrations, matrix, and foot processes C) fenestrated endothelium of glomerulus, basement membrane of glomerulus, and podocyte filtration slits D) basement membrane of glomerulus, foot processes, and capsular outer layer E) podocyte filtration slits, matrix cells in the glomerulus, and extraglomerular mesangial cells
Because oxygen has a low solubility coefficient in water,
A. it is easily dissolved in water and requires only a slight partial pressure gradient to enter the water. B. it is easily dissolved in water and the partial pressure gradient is irrelevant to its solubilty. C. it is not easily dissolved in water and requires a steep partial pressure gradient to enter the water. D. it is impossible to dissolve oxygen into water unless the partial pressure gradient is very minor.
Melatonin is an antioxidant that
a. accelerates metabolism b. defends against free radicals c. lowers the concentration of blood sugar d. serves as a secondary messenger e. stimulates reduction reactions
Unicellular exocrine glands secrete
A) milk. B) sweat. C) mucus. D) sebum. E) insulin.