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IrinaVladis [17]
3 years ago
14

Question 9

Biology
2 answers:
IRISSAK [1]3 years ago
6 0

Answer:

<u>O floating around one another in a fluid structure</u>

<u />

Explanation:

Cells are made up of varying types of molecules in order to achieve a fluid, stable plasma membrane. The membrane mainly consists of:

  • lipids
  • proteins
  • cholesterol

Lipid membranes help maintain selective membrane permeability. The lipids, formed from glycerol and saturated/unsaturated fatty acids, are made up of polar heads and non-polar tails; they typically only allow the movement of <em>small non-polar molecules</em>. Larger molecules are <em>transported </em>through integral proteins; other types, are peripheral, and may have specialized functions like <em>cell signaling</em>.

Cholesterol molecules keep the lipids in place, and ensure membrane fluidity.  In extreme temperatures, they help the membrane to maintain its shape without becoming too rigid.

pav-90 [236]3 years ago
4 0

Answer:

Floating around one another in a fluid Structure

Explanation:

UvU. The other guys answer was better he deserves a brainliest

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