Multiple choice

The protein molecule, permanently attached to the biological membrane, is

  1. transmembrane protein

  2. peripheral membrane proteins

  3. integral membrane protein

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

An integral membrane protein (IMP) is a protein molecule that is permanently attached to the biological membrane. Proteins that cross the membrane are surrounded by annular lipids, which are defined as lipids that are in direct contact with a membrane protein.

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