Transposons are frequently used as cloning vectors.
Answer the following statement true (T) or false (F)
False
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When a neuron is at rest
a. there is a voltage difference across the membrane of about 70 millivolts. b. the interior is negatively charged. c. it is not responding to a stimulus. d. the fluid outside the membrane has more sodium and less potassium than the cytoplasm. e. all of these occur.
The greater the number of links in a food chain, the higher the
A) species diversity. B) number of top predators. C) connectance. D) mean chain length.
All male honeybees develop from unfertilized eggs. This is an example of
A) parthenogenesis. B) sexual reproduction. C) budding. D) hermaphrodism. E) external fertilization.
The Ames test demonstrates that a chemical is
A. carcinogenic. B. carcinogenic in Salmonella. C. mutagenic in Salmonella. D. carcinogenic in humans. E. mutagenic in humans.