Which of the following controls the temperature in endothermic animals?

A) Reflexive skeletal muscles
B) Autonomic nervous system
C) Cerebral cortex
D) Positive feedback systems
E) Hypothalamus


E

Biology & Microbiology

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Answer the following statements true (T) or false (F)

1. Humans exert top-down pressures on white-tail deer. 2. Using insects from the original homeland to control invasive weeds is a form of biological control. 3. Resource partitioning enables similar species to coexist in a community. 4. Secondary metabolites can become essential feeding stimulants for some herbivores.

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An example of a ?-hemolytic gram-positive organism is:

a. Staphylococcus aureus. b. S. pneumoniae. c. Escherichia coli. d. Enterococcus.

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In most male animals, the penis or other copulatory organ achieves erection by

A. artery dilation or hemolymph pressure. B. bones or exoskeleton interlocking. C. muscle contraction. D. testicular pressure.

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Eukaryotic cilia and flagella:

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Biology & Microbiology