The fact that one can find fish in both tropical and polar waters implies that _______________.
a. a single fish can swim in just about any body of water on Earth.
b. tropical and polar waters provide similar selective environments.
c. different species of fish have adapted to different environmental conditions.
d. most fish migrate between tropical and polar waters.
e. I don't know the answer
Answer: c. different species of fish have adapted to different environmental conditions.
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Osmoregulation is the control of ____
a. the internal environment b. temperature c. metabolic wastes d. water and ion balance e. hyperthermia
What is one function of the structure labeled A in the accompanying figure?
a. attachment b. locomotion c. protein-making d. breathing e. communication
In lab, Tom was given a mixed culture. His objective is to isolate single colonies. What should be used to accomplish this goal?
A. loop dilution, TSA, hockey stick, 37 degree Celsius incubator B. hockey stick, spread plate technique, and 4 degree Celsius incubation temperature C. sterile swab, loop dilution, TSB D. sterile swab, streak plate method, 37 degree Celsius incubator E. inoculating loop, incinerator, streak plate method, 37 degree Celsius incubator
Jim needs to prepare one liter of a 4% NaCl solution. How much NaCl should he weigh out?
A. 40 grams B. 400 grams C. 4.0 grams D. 0.4 grams