Collectively, the materials eliminated from the nephron are called ____.
a. electrolytes
b. urine
c. renin
d. filtrate.
Ans: urine
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Which of the following reactions is the least likely to occur spontaneously?
A. A + B -> C if ?G° for the reaction equals -2.5 kcal/mol. B. A + B -> C if ?G° for the reaction equals -12.5 kcal/mol. C. A + B -> C if Keq for the reaction equals 0.5. D. A + B -> C if Keq for the reaction equals 1.5. E. A + B -> C if ?G° for the reaction equals +1 kcal/mol.
At what phase of the cell cycle does p53 halt cell division if it senses DNA damage?
A. S B. G2 C. M D. G0 E. G1
Mammals living in cold environments tend to have ____ bodies and ____ appendages than species living in warm
environments.
a. larger; fewer b. larger; longer c. larger; shorter d. smaller; shorter e. smaller; longer
The oldest fossils on Earth
a. show that life began in Africa. b. show that life began in lush regions between large rivers. c. show that life began in the oceans. d. are at least 5 billion years old. e. at most 5 million years old.