Self-reactive T cells are eliminated during the development of tolerance in the immune system
Indicate whether the statement is true or false.
Answer: TRUE
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How might cDNA libraries be used to assign particular genes to the diseased state of a cell?
What will be an ideal response?
Which type of ecosystem has low primary production but nonetheless contributes a large proportion of Earth's total net primary production?
A) tropical rain forest B) coral reef C) open ocean D) desert
The shelled egg of reptiles prevents the egg from dehydrating
Indicate whether the statement is true or false
Lake Victoria is famous for its variety of cichlid fishes. In fact, they offer the most diverse assembly of vertebrates presently known to science. One trait that scientists have focused on as one possible reason for their adaptability is
A. a second set of scales that lie beneath the top outermost scales. B. gill arches that are not covered by an operculum, which prevents hiding places for gill parasites. C. digestive tracts that are able to process most substrates, which has eliminated the need for feeding specialization. D. ability to change color in relationship to their environment. E. a second set of jaws in their throats.