Adult stem cells are usually
A. differentiated.
B. totipotent.
C. pluripotent.
D. multipotent.
D. multipotent.
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The Lac repressor protein binds to the:
A. operator in the presence of allolactose. B. lacZ gene in the presence of allolactose. C. operator in the absence of allolactose. D. operator regardless of the presence or absence of allolactose.
For evolution to become the theory that underpins all of the biological sciences, which of the following
had to occur?
a. Darwin had to write The Origin. b. Lamarck's theory of biological evolution had to be disproved. c. Darwin had to prove that finches in the Galápagos were descended from a common ancestor. d. Mendel had to discover genes. e. Research in many fields had to provide evidence for evolution.
Species of Bacillus produce bacitracin and the polymyxin drugs.
Answer the following statement true (T) or false (F)
Briefly describe the differences in the digestive tracts of animals with an incomplete and a complete gut.
What will be an ideal response?