Multiple choice

Cell membrane is an indispensable part of cell that maintains vital functions of a cell besides giving proper shape and rigidity to the cell. The intracellular organelles such as vacuoles, lysosomes and golgi bodies are also made up of a similar membrane.

Which of the following substances does not move across the cell membrane of cells by passive diffusion?

  1. Palmitic acid

  2. Aldosterone

  3. Na+

  4. Testosterone
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

 Na+, a charged molecule, crosses membranes through channelby active transport as it is hydrophilic.

Keep practicing — related questions