One advantage of excretion of urea instead of uric acid is that urea
a. reguires less energy then uric acid to produce
b. can be concentratred to a greater extent
c. requires no water to excrete
d. is a larger molecule
Ans: a. reguires less energy then uric acid to produce
You might also like to view...
Of the four types of T cells, only the ____________________ T cells destroy infected body cells
Fill in the blank(s) with correct word
An allele whose expression is completely masked by the expression or effect of its allelic partner is
a. homologous. b. homozygous. c. dominant. d. recessive.
A chemical produced by one animal that is usually only detectable by another animal of the same species is called a
A) releaser. B) subliminal suggestion. C) pheromone. D) hormone. E) neurotransmitter.
In step 2 of the citric acid cycle, the enzyme aconitase generates isocitrate from citrate. Which of the following statements about this reaction is true?
(a) There is a substantial free-energy difference between the reactants and products of this reaction. (b) The unbonded electrons from hydroxide ions provide energy for this reaction. (c) The aconitase enzyme functions as a mutase in this reaction. (d) The reaction sequence first generates one molecule of water and then consumes one molecule of water.