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Water-soluble hormones ______________ pass through the cell membrane.

Question

Water-soluble hormones ______________ pass through the cell membrane.

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Solution

Water-soluble hormones cannot pass through the cell membrane.

Here's why:

  1. The cell membrane is made up of a phospholipid bilayer, which is hydrophobic (water-repelling) in nature.

  2. Water-soluble hormones, as the name suggests, are soluble in water and are typically hydrophilic (water-attracting).

  3. Due to the hydrophobic nature of the cell membrane, water-soluble hormones cannot pass directly through it.

  4. Instead, these hormones must use specific protein receptors located on the surface of the cell membrane to transmit their message into the cell.

  5. When a water-soluble hormone binds to its receptor on the cell surface, it triggers a series of events inside the cell that leads to the hormone's intended effects.

So, in summary, water-soluble hormones cannot pass through the cell membrane due to the membrane's hydrophobic nature. They must instead use protein receptors on the cell surface to transmit their signals.

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