Why Do Mammals Adapted to Dry Climates Tend to Have

question 5

Multiple Choice

Why do mammals adapted to dry climates tend to have considerably more long -looped nephrons than those adapted to wet climates?

• A) So that a lower concentration of salt can be produced in the interstitial fluid of the kidney medulla, causing less water to be reabsorbed into the capillaries
• B) So that their blood pressure does not drop to dangerously low levels during periods of drought
• C) So that a higher concentration of salt can be produced in the interstitial fluid of the kidney medulla, causing more water to be reabsorbed into the capillaries
• D) So that the wastes can be excreted as uric acid instead of urine
• E) So that the excess urea they produce as a result of dehydration can be properly filtered by the nephrons and excreted

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Definitions:

Conjugate Base

The resulting species after a proton has been given up by an acid in a chemical reaction.

Phenol

An aromatic organic compound with the molecular formula C6H5OH, featuring a phenyl group bonded to a hydroxyl group.

Trifluoromethanesulfonic Acid

A strong acid often used in organic chemistry syntheses, recognized for its powerful protonating ability.

Methanesulfonic Acid

A strong organic acid featuring a sulfonic acid group attached directly to a methane molecule, known for its good water solubility and use in organic reactions.