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most cell membranes are composed principally of

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Answer:

DNA and ATP 2. proteins and lipids 3. chitin and starch ... Singer proposed the fluid mosaic model of the cell membrane in which the cell membrane consists of a double lipid layer with proteins embedded in it to act as name tags or to aid in movement of larger molecules across the membrane.

Explanation:

Shivanshmsoni1207idn

Answer:

Cell membranes are composed primarily of fatty-acid-based lipids and proteins. Membrane lipids are principally of two types, phospholipids and sterols (generally cholesterol). Plasma membrane is a living thing, delicate, elastic and selectively permeable membrane. It is made up of phospholipid bilayer and protein molecules embedded within.

Explanation:

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