Which of the following is NOT an example of a homeostatic mechanism?
a. sweating when you get hot
b. the maintenance of blood glucose concentrations
c. body water regulation
d. heart rate increase during exercise
e. childbirth
E
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Birds differ from earlier vertebrates by
a. their lack of scales. b. producing land eggs. c. the ability to maintain a constant body temperature through metabolic activities. d. the ability to fertilize eggs internally. e. their possession of a dorsal nerve cord.
Gregor Mendel ____
a. discovered the structure of DNA b. claimed that each individual carries a pair of "factors" for a given trait c. demonstrated that traits carried by parents are “blended” in their offspring d. cross-bred thirty different species of pea plants over a span of fifty years e. reasoned that each parent carries one gene for a specific trait
Eosinophils are filled with hemoglobin
____________________ Indicate whether the statement is true or false.
Which disease is an autoimmune disease characterized by weakness that especially affects the muscles of the eyelids, face, neck, and extremities?
A. muscular dystrophy B. myalgia C. tendinitis D. bursitis E. myasthenia gravis