Multiple Choice
How does ion composition of pre-urine differ from hemolymph?
A) Pre-urine is significantly higher in osmolarity (especially with respect to Na⁺ and K⁺) .
B) Hemolymph is higher in osmolarity,conserving its Cl⁻.
C) Pre-urine is similar to hemolymph in ion composition.
D) The protein pumps and channels of the Malpighian tubules concentrate Cl⁻ in the pre-urine.
Correct Answer:

Verified
Correct Answer:
Verified
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