The actinoplanetes can be found in ________ habitats.
A. freshwater
B. soil
C. marine
D. All of the choices are correct.
Answer: D
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Four of the five hormones listed below directly affect
another endocrine gland. Select the exception. a. somatotropin b. corticotropin c. luteinizing hormone d. follicle-stimulating hormone e. angiotensin
The breast muscle of turkeys and chickens is usually referred to as light meat, whereas that of wild ducks and geese is described as dark meat. How might this be explained?
A. The muscles of ducks and geese do not contain myosins. B. Turkeys and chickens do not fly for sustained periods, whereas wild ducks and geese do. C. The darker body color of ducks and geese provides protective camouflage against predators. D. Turkeys and chickens are not closely related to ducks and geese.
A newly described unicellular organism was isolated from a salt mine. This organism has no membranous organelles and its cell wall lacks peptidoglycan. Attempts to culture it in a medium with less than 25% salt were unsuccessful, but it was able to grow well on 25% salt supplemented agar. This organism would best be described as a ________ and is most likely in the domain ________.
A. halophile; Archaea. B. thermophile; Bacteria. C. halophile; Bacteria. D. thermophile; Archaea. E. thermophile; Eukarya.
The actual gap between the axon terminal and the muscle cell is called a
a Motor Unit b. Synaptic Cleft c. Acetylcholine d. Action Potential