Which of the following statements about myoglobin is false?
A. When fully saturated, myoglobin carries
more O2 molecules than hemoglobin.
B. Myoglobin is found within vertebrate
muscle cells.
C. Myoglobin has a greater affinity for O2
than hemoglobin.
D. Myoglobin binds O2 more tightly than
hemoglobin.
E. None of the answer options is false.
A
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Which of the following may result from improper activation of B cells by self antigens?
A. Production of autoantibodies B. Allergic reactions C. Anergy D. Peripheral tolerance E. Production of self-reactive T cells
Which of the following are primate characteristics? Check all that apply.
_____ grasping hand _____ large brain _____ claws on each digit _____ forward-facing eyes _____ complex social behavior
The wide variation in skin color in humans is best explained by
a. environmental changes like improvements in diet. b. genetic drift. c. skin color is a polygenic trait. d. crossing over. e. artificial selection.
The symptoms of tetanus are due to
A) endospore formation. B) systemic infection. C) sustained relaxation of muscles. D) tetanospasmin. E) inflammation.