Which hormone has potent, direct effects on appetite?
A. leptin
B. insulin
C. glucagon
D. thyroxine
E. vasopressin
A. leptin
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Which of the following is a way in which bacteria help the environment?
A. They are used to clean water in sewage treatment facilities. B. They remove pollutants from the environment. C. They break down dead organisms in the soil and recycle nutrients. D. All of the above are ways in which bacteria help the environment.
In the axoneme, sidearms
A) are 10 protofilament incomplete microtubules attached to 13 protofilament microtubules. B) generate force to slide microtubules past one another. C) project toward the central pair from each outer doublet. D) link adjacent doublet microtubules to limit sliding. E) are complete 13 protofilament microtubules.
The use of cloning to produce special embryonic stem cells is called
A) regeneration. B) reproductive cloning. C) therapeutic cloning.
Which of these is a cellular characteristic of all eukaryotes?
A) a cell wall B) a nuclear membrane C) a nucleoid D) few to no proteins associated with the DNA E) few to no organelles in the cytoplasm