Given these blood vessels in the kidney:
1) afferent arteriole
2) arcuate artery
3) interlobar artery
4) interlobular artery
Which of these sequences represents the correct pathway a red blood cell would follow as it moved from the renal artery to the glomerulus?
A. 1,2,3,4
B. 2,3,4,1
C. 2,1,4,3
D. 3,2,4,1
E. 4,3,2,1
Answer: D. 3,2,4,1
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What are the specific environmental consequences of a phytoplankton bloom?
a. An increase in phytoplankton acidifies ocean water. b. Phytoplankton are decomposed by aerobic bacteria, which depletes the surrounding water of oxygen. c. Phytoplankton fix nitrogen in the water causing nitrification. d. Phytoplankton are decomposed by anaerobic bacteria which enriches the surrounding water with oxygen. e. Phytoplankton use up hydrogen ions, which decreases the acidity of the surrounding water.
after anaerobic exercise, lactic acid is converted to pyruvic acid, which enters the _________ pathway and can be used for energy
Fill in the blank(s) with the appropriate word(s).
Which glands secrete pheromones?
a. exocrine b. ductless c. mammary d. endocrine e. digestive
The oceans represent an important sink for anthropogenic CO2. In what form is the excess carbon stored?
A) as calcium carbonate sediments B) as solid methane C) as CO2 dissolved in water D) as atomic carbon coatings on inorganic particulates E) none of the above