Many intracellular signaling proteins act as switches that toggle from an inactive to an active state. Once activated, these signaling proteins can stimulate—or in some cases inhibit—other proteins in the signaling pathway. An interaction that results in stimulation is often depicted by an arrowhead (→), whereas inhibition is indicated by a crossbar (—I). In which of the hypothetical signaling pathways outlined below would activation of the receptor lead to an increase in gene expression?
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Biology, 22.06.2019 04:00
Select the true statements about eubacteria. most live as decomposers and heterotrophs. most only thrive in a narrow range of environments. certain eubacteria are responsible for food poisoning. eubacteria thrive in extreme environments.
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Biology, 22.06.2019 17:00
Some species of wasps are social. the queen starts a colony from scratch each spring. she builds a small nest, and lays and raises a group of female workers. the workers enlarge the nest while the queen continues to lay eggs. unfertilized eggs become males that mate with newly hatched females. all of the wasps except the newly fertilized females die by the summer. which best describes this behavior? a)it is beneficial only to the males that do not fertilize eggs. b)it is beneficial only to the female workers that are not fertilized. c)it is beneficial to each one of the individual colony members. d)it is beneficial to the whole species, but not to all of the individual members.
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Many intracellular signaling proteins act as switches that toggle from an inactive to an active stat...
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