How Does Ion Composition of Pre- Urine Differ from Hemolymph

question 19

Multiple Choice

How does ion composition of pre- urine differ from hemolymph?

• A) Hemolymph is higher in osmolarity, conserving its Cl^- .
• B) Pre- urine is significantly higher in osmolarity especially with respect to Na⁺ and K⁺).
• C) The protein pumps and channels of the Malpighian tubules concentrate Cl^- in the pre- urine.
• D) Pre- urine is similar to hemolymph in ion composition.

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