__________ are jawless fishes with a backbone.
Fill in the blank(s) with the appropriate word(s).
Hagfishes
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Assuming that each heavy and light chain has an equal chance to be expressed in each cell, approximately how many possible antibodies can be expressed?
A) 192 B) 1,920 C) 19,200 D) 1,920,000
DNA polymerase and RNA polymerase are similar in that
a) both produce a double-stranded molecule. b) both use deoxyribonucleotides as substrates. c) both require energy to break hydrogen bonds. d) the products of both are usually polyadenylated. e) None of the above.
The three types of muscle tissue are cardiac, skeletal, and ___________
Fill in the blank(s) with the appropriate word(s)
When a limiting factor becomes more important as the size of the population increases, it is known as a(n)
A. biotic potential. B. density-independent limiting factor. C. density-dependent limiting factor. D. intrinsic factor.