Which American scientist focused on the coloration of animals that he collected from surface waters and dredged depths?
a. Alexander Agassiz
b. Victor Hensen
c. Sir Alistair Hardy
d. Charles Wyville Thomson
a
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A woman with blood type B and a man with blood type A could have children with which of the following phenotypes?
A. AB or O B. A, B, or O C. A, B, AB, or O D. AB only
When a neuron is at rest
a. there is a voltage difference across the membrane of about 70 millivolts. b. the interior is negatively charged. c. it is not responding to a stimulus. d. the fluid outside the membrane has more sodium and less potassium than the cytoplasm. e. all of these occur.
During receptor-mediated endocytosis, ____.
A. plasma membrane receptors bind molecules to be expelled B. a small channel forms beneath the receptors C. a pit opens inside a cell D. a vesicle forms E. a vesicle is destroyed
Air and water pollution result mainly from
A. improper waste disposal. B. agricultural chemicals. C. increased industrialization. D. All of these are correct.