The loops of Henle create a concentration gradient in the interstitial fluid surrounding the loop, with the concentration highest in the _____ and lowest in the _____ of the kidney
A. inner medulla; cortex
B. outer medulla; inner medulla
C. outer medulla; cortex
D. cortex; inner medulla
E. cortex; outer medulla
A
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Due to its unusual habitat (inside the digestive tracts of other animals), the tapeworm lacks _____
A) a reproductive system B) a mouth C) a digestive tract D) a mouth and a digestive tract E) a reproductive and digestive system
Answer the following statements true (T) or false (F)
1. Pneumocystis pneumonia is a common contributory cause of death in AIDS patients. 2. Tinea versicolor is caused by a yeast named Malassezia furfur. 3. Mycetomas are respiratory infections. 4. When grown at room temperature, Coccidioides immitis produces yeast colonies. 5. Histoplasmosis is the most common systemic fungal infection in AIDS patients.
Which glial cell(s) is/are only found in the peripheral nervous system?
a. Schwann cells b. oligodendrocytes c. astrocytes d. Schwann cells and oligodendrocytes e. Schwann cells and astrocytes
Which of the following ecosystems has a very high net primary productivity?
A. desert B. tropical rain forest C. temperate forest D. boreal forest E. tundra