The most effective molecule for nitrogenous waste disposal in desert animals would be __________
a. ammonia because it uses less energy to make than uric acid or urea
b. urea because it is less toxic than uric acid
c. uric acid because it takes less energy to make than urea
d. uric acid because it requires very little water for excretion
e. ammonia because it is the most soluble of all the nitrogen-containing metabolic waste products
Ans: d. uric acid because it requires very little water for excretion
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Among eukaryotes, only animals undergo meiosis
a. True, animals are the only group that sexually reproduces. b. False, meiosis is associated with all eukaryotes regardless of whether they reproduce sexually or asexually. c. False, meiosis occurs in all sexually reproducing eukaryotes. d. True, plants and fungi reproduce via asexual reproduction
The process of binary fission leads to the production of how many cells?
a. 1 b. 2 c. 3 d.4
About a day after fertilization, the zygote undergoes ________, which is a rapid series of cell divisions
Fill in the blank(s) with correct word
Which receptor in plant cells is activated by red light?
a. rhodopsin b. diacylglycerol c. acetylcholine d. phytochrome e. cryptochrome