In flour beetles and desert locusts,how is water conserved?
A) The pre-urine formed in the Malpighian tubules is hypertonic.
B) Urine that is formed is isotonic to hemolymph,but the muscle cells surrounding spiracles of these organisms are able to significantly limit water loss due to respiration.
C) Water is transported into hindgut cells through endocytosis.
D) Sodium and chloride are actively transported out of pre-urine,and water follows,forming a hypertonic urine.
Correct Answer:
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Q21: Figure 42.1 Q22: Through studies on the Malpighian tubules,researchers found Q23: Water loss from insect surface is minimal Q24: Malpighian tubules form pre-urine,which is further processed Q25: How does ion composition of pre-urine differ Q27: A potassium ion gradient is set up Q29: One of the waste products that accumulates Q30: What is the function of the osmotic Q31: Why are the renal artery and renal Q46: The loop of Henle dips into the
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