Parkinson’s disease is caused by a shortage of
the neurotransmitter
a. acetylcholine.
b. serotonin.
c. dopamine.
d. norepinephrine.
e. an endorphin.
C
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You breed a black, long-haired rabbit with a white, short-haired rabbit. All of the offspring have long, black hair. If the genes for hair color and length are linked, what would be a possible ratio for the F2 population?
A. 5 long-haired black, 4 short-haired white, 1 short-haired black, 2 long-haired white B. 3 long-haired black, 1 short-haired white, 1 short-haired black, 3 long-haired white C. 5 long-haired black, 4 short-haired white, 5 short-haired black, 4 long-haired white D. 1 long-haired black, 1 short-haired white, 1 short-haired black, 1 long-haired white E. 1 long-haired black, 2 short-haired white, 5 short-haired black, 4 long-haired white
Patients with McArdle's Disease lack an enzyme in their livers that catabolizes glycogen. Compared to an unaffected individual, what would you predict about the blood glucose levels of a patient with McArdle's disease?
A. Blood glucose levels would be lower because they cannot break down glycogen. B. Blood glucose levels would be lower because they cannot make glycogen. C. Blood glucose levels would be normal, because glycogen is made up of amino acids. D. Blood glucose levels would be higher because they cannot make glycogen. E. Blood glucose levels would be higher because they cannot break down glycogen.
Which of the following is incorrectly paired?
a. veins—typically carry deoxygenated blood b. capillaries—blood vessels with smallest diameter c. lymph vessels—contain mainly water and some blood cells d. alveolus—increases surface area for exchange
Answer the following questions true (T) or false (F)
1. Damage to the medulla oblongata in the brain could interfere with breathing. 2. The human body has more sensory input to the CNS than the traditional "five senses." 3. If the left side of the body is paralyzed by a stroke or other brain injury, the damage occurred on the left side of the brain.