Substances<span> move in and </span>out of cells<span> by diffusion down a concentration gradient, through a partially permeable membrane. The efficiency of </span>movement of substances in and out<span> of a </span>cell<span> is determined by its volume to surface area ratio. ... Osmosis is a type of diffusion but refers only to the </span>movement<span> of water molecules.</span>
Answer:
The majority of the cell membrane is composed of PHOSPHOLIPIDS.
Explanation:
Phospholipids are a type of lipid that is found in the cell membrane of cells. This type of lipid are a good fit for cell membrane because they have the capacity to form bi layers. The lipids are divided into tail and head regions; the head is hydrophilic in nature while the tail is hydrophobic in nature. The hyrophilic head is made up of phosphate group while the hydrophobic tail is made up of fatty acid molecules.
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producers are plants, so they won’t attack anyone
