Which of the following is a reason we should care about the extinction of species and work to conserve biological diversity?
A) moral responsibility
B) economic benefits
C) value of species as indicators of environmental quality
D) value of species in maintaining ecosystem function
E) all of the above
Ans: E) all of the above
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The area around a nucleus where an electron is most likely to be found is the:
A. electrical space. B. energy level. C. polar space. D. orbital.
The energy to form the new bond when a nucleotide is added to a growing DNA strand is provided
primarily by ____.
a. unwinding of the DNA double helix b. hydrolysis of pyrophosphate c. breaking hydrogen bonds between base pairs d. DNA polymerase e. forming hydrogen bonds between base pairs
Which of the following vitamins could be toxic in large amounts?
a. A b. B1 c. B2 d. biotin e. folic acid
Which of the following is most inclusive?
a. family b. phylum c. species d. class e. order