The ammocoete is the larva of
(a) lampreys.
(b) sharks.
(c) bony fishes.
(d) amphibians.
(b) sharks.
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Why is one side of a single water molecule partially negative while the other side is partially positive?
A. Electron pairs are unevenly shared between the oxygen atom and the two hydrogen atoms. B. Electron pairs are unevenly shared between the two hydrogen atoms. C. Hydrogen donates its electrons to oxygen. D. Oxygen donates its electrons to hydrogen.
Within the stem of a vascular plant, where would you expect to find the cells that are the most mature?
A. within the shoot apical meristem at the tip of the stem B. within the zone of elongation directly beneath the shoot apical meristem C. at the base of the stem near the soil
Biosafety Level 4 agents:
a. include those that are the common agents of infectious disease. b. require only standard good laboratory technique. c. include M. tuberculosis, M. gordonae, and Brucella. d. require the use of maximum containment facilities.
Select the statement that is true when comparing solutions with a pH of 6 and a pH of 8.
A. The solution with a pH of 8 has a 100 times higher concentration of hydrogen ions than a solution with a pH of 6. B. The solution with a pH of 6 has a 100 times lower concentration of hydrogen ions than a solution with a pH of 8. C. The solution with a pH of 6 has a 100 times higher concentration of hydrogen ions than a solution with a pH of 8. D. The solution with a pH of 6 has a 2 times higher concentration of hydrogen ions than a solution with a pH of 8. E. Solutions with a pH of 8 has a 2 times lower concentration of hydrogen ions than a solution with a pH of 6.