Which of the following is NOT a recessive inherited disorder?
A. Phenylketonuria
B. Muscular dystrophy
C. Cystic fibrosis
D. Sickle-cell disease
Answer: B
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Which of the following nerves is part of the cervical plexus?
A. Median nerve B. Musculocutaneous nerve C. Phrenic nerve D. Pudendal nerve E. Femoral nerve
Inflammation of the lining of the brain and spinal cord is called _____.?
A) ?encephalitis B) ?meningitis C) ?poliomyelitis D) ?laryngitis
Nongated ion channels
A) open in response to small voltage changes. B) open when a ligand binds to its receptor. C) are responsible for the ion permeabilities of the resting plasma membrane. D) allow substances to move into the cell but not out. E) all of the above.
What must happen before a body cell can begin mitotic cell division?
A)Its DNA must be replicated exactly so that identical copies of the cell's genes can be passed on to each of its offspring. B)The DNA undergoes mutation in order to increase variation in the cell population. C)Its DNA must be divided in half so that half can go to one daughter cell and half can go to the other daughter cell. D)The DNA is expelled from the cell so that it will not be affected by the division process.