Select the hormone that is NOT involved in crustacean molting
a. molt-inhibiting hormone
b. juvenile hormone
c. brain hormone
d. ecdysone
e. molt-stimulating hormone
E
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The relevance of the pseudocoelom to phylogeny has been questioned. Rotifera and Nematoda both have a pseudocoelom. The molecular evidence suggests which of the following conclusions?
A. Molecular evidence confirms that rotifers and nematodes are closely related and that both participate in the same monophyletic clade. B. Rotifers are more closely related to Lophotrochozoa than to nematodes. C. Rotifers are more closely related to echinoderms than to nematodes. D. Rotifers are more closely related to chordates than to nematodes. E. Rotifers are more closely related to nematodes than to mollusks.
When measuring membrane potential, the tip of a microelectrode is inserted into a(n)
a. axon. b. node of Ranvier. c. Schwann cell. d. dendrite. e. glial cell.
Cells must efficiently transfer energy from their energy-trapping systems to the systems actually carrying out work and also use various metabolic processes to replace the energy used in doing work. This is called the ________.
Fill in the blank(s) with the appropriate word(s).
Which of the following organisms causes Yaws?
A. Treponema pallidum endemicum B. Treponema pallidum pallidum C. Treponema pallidum carateum D. Treponema pallidum pertenue