Which of the following includes the structures responsible for regulating emotions?
a. somatic system
b. sympathetic system
c. limbic system
d. autonomic system
c. limbic system
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Molting in arthropods involves primarily a change in:
a. sex b. body size c. eating habits d. sensory structures e. larval to adult stages
Four of the five plant activities listed below are
affected by phytochrome. Select the exception. a. phototropism b. stem elongation c. seed germination d. leaf movement e. formation of flowers, fruits, and seeds
Epigenetic changes in gene expression that can lead to cancer by silencing tumor suppressor genes are mediated by
A) hereditary mutations in gene base sequence. B) spontaneous mutations in gene base sequence. C) DNA methylation. D) DNA double-strand breaks. E) pyrimidine dimer formation.
Gregor Mendel performed his famous experiments on:
a) pigeons. b) hawkweed. c) humans. d) punnett squares. e) garden peas.