Which parts belong to the central nervous system?
A) sensory neurons
B) interneurons
C) motor neurons
D) effectors
B
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Shiga toxin is dangerous to humans because it is an _____
a. endotoxin that kills cells b. endotoxin that illicit an immune response c. exotoxin that interferes with protein synthesis by intestinal cells d. exotoxin that disrupts nerve cell function e. exotoxin that can overwhelm the immune response and decrease blood pressure
What process in the kidney makes drug testing of urine possible?
What will be an ideal response?
What are male secondary sex characteristics in humans? Check all that apply.
A. increase in muscle mass B. decrease in testosterone levels C. deepening of voice D. decrease in body hair E. increase in facial hair
Which of the following statements correctly describes one of Chargaff's rules regarding DNA?
A. The percentages of adenine and thymine are roughly equal, as are the percentages of guanine and cytosine in the DNA of a given species. B. DNA base composition does not vary between species. C. The percentages of adenine and cytosine are roughly equal, as are the percentages of guanine and thymine in the DNA of a given species. D. DNA has a double helical structure.