Amyotrophic lateral sclerosis (ALS) is a demyelinating disease that results from nerve damage beginning in the
A) brain.
B) diaphragm.
C) intercostal muscles.
D) spinal cord.
E) sensory nerves.
D
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What are some of the changing things in our current world that the author claims we are not well adapted to yet?
A. Computer screens B. Junk food C. Sterile environments D. 24 hour schedules E. None of the above (A-D) F. Some of the above (A-D)
All of the following have amniotic eggs EXCEPT
a. salamanders. b. snakes. c. sea lions. d. seagulls
A behavior that has a genetic basis is subject to evolution by __________. Fill in the blank(s) with the appropriate word(s)
Which of the following describes how facilitated diffusion is powered?
a. Facilitated diffusion is "free of cost." b. Energy is required to do the work of establishing and maintaining a concentration gradient. c. ATP is required directly. d. The sodium-potassium pump powers facilitated diffusion. e. Facilitated diffusion is powered by endocytosis