The dodder is a land plant that parasitizes other plants. It grows in long thin strands that penetrate the host plant and absorb water, minerals and carbohydrates. Unlike other land plants, the mature dodder does not require
A. nutrients
B. water
C. air
D. sunlight
Ans: D. sunlight
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What is a simple way for determining if an annelid is a member of Errantia (a polychaete) or Sedentaria (a clitellate)?
A. Possession of a closed circulatory system B. The layout of the digestive system C. The amount of chaetae (setae) D. The number of segments
What limits the frequency of the action potentials?
A. Refractory period B. Spike amplitude C. Chloride ions D. Nodes of Ranvier
Cytokines are being investigated for a possible treatment of which disease?
A. tuberculosis B. malaria C. pneumonia D. AIDS E. hepatitis
A private in the U.S. Army is stationed at Ft. Bragg, North Carolina. He has been admitted to the infirmary with complaints of a severe headache and high fever. Upon questioning, he revealed that he had received a tick bite several days earlier. Two days after admission, he starts to develop a rash, beginning on his hands and feet and spreading towards his torso. Which of the following should be considered first in the diagnosis?
A) Epidemic typhus B) Lyme disease C) Rocky Mountain spotted fever D) Tularemia E) Anthrax