The kidney was one of the first organs to be successfully transplanted because it is so encapsulated and has limited vessels feeding into or out of it. How many major "connections" must be cut in transplant surgery for one kidney?
A. two: the renal artery and vein
B. three: the renal artery and vein and the urethra
C. three: the renal artery and vein and the ureter
D. five: the renal artery and vein, two ureters, and one urethra
E. four: the renal artery and vein, the ureter, and urethra
Answer: C
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An experimental test of the hypothesis to explain the origin of the first organic compounds on Earth might include all of the following sequential steps except
A. assembling an atmosphere with H2, CH4, NH3, and H2S. B. placing this atmosphere over liquid water. C. inoculating with a few bacteria to get the process started. D. increasing the temperature of the gases. E. providing energy with electrical spark discharges.
Endotoxin is an exogenous pyrogen.
Answer the following statement true (T) or false (F)
When electrons are removed from a food molecule, the molecule is
A. reduced. B. in equilibrium. C. oxidized. D. polymerized. E. endergonic .
After one round of division (Meiosis I) are the cells HAPLOID or DIPLOID?
A. They are haploid
B. They are diploid
C. One is haploid and one is diploid
D. They are triploid