Multiple choice

Which of the following statements concerning the renal excretion of drugs is INCORRECT?

  1. Tubular secretion is more important than tubular reabsorption for most of the drugs.

  2. Drug molecules, which are bound to proteins are not filtered.

  3. Lipid soluble drugs require special transporter molecules to cross cell membranes.

  4. The proximal tubule is a site of drug secretion.

  5. A charge on a drug favours water solubility.
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Lipid soluble drugs and other lipid soluble substances are able to diffuse across the lipid plasma membrane of cells without special transporter molecules.

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