Question 1 (of 20) Consider your knowledge about the cell membrane and check all

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Question 1 (of 20) Consider your knowledge about the cell membrane and check all of the true statements below Cell membranes are present in only two of the three domains of life. Phospholipids can self-assemble into a sphere without the help of proteins. If the fatty acid tails of phospholipids were hydrophilic, and the phosphate heads were hydrophoblc you'd expect the bilayer to look like this ad Sterols in cell membranes allow the membrane to be more fund. Phospholipid bilayers surround all eukaryotic cells. Membrane proteins offer structural support to the membrane but have no other function Both plant and animal cell mernbranes are considered rud mosaics O Type here to search

Explanation / Answer

Phospholipids can self-assemble into a sphere without the help of proteins - when phospholipids are in an aqueous solution they assemble into a ball. Their hydrophobic ends will face inward and hydrophilic ends outward. Sterols in cell membranes allow the membrane to be more fluid - Cholesterol in the lipid bilayer makes the membrane fluidic. Phospholipid bilayers surround all eukaryotic cells - prokaryotes such as gram negative bacteria has two plasma membrane and a periplasm between the two. Both plant and animal cell membranes are considered fluid mosaics - Due to the fluidic nature of both plant and animal cell membrane, they both are called fluid mosaics.

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