The structure of plasma membrane makes it selectively permeable allowing it to regulate the passage of substances into and out of the cell. Small nonpolar molecules can easily across the phospholipid bilayer of plasma membrane because it is hydrophobic. Polar molecules and ion cannot easily across the hydrophobic portion of plasma membrane because it is hydrophilic. Polar molecules and ions usually across the plasma membrane with the help of transport proteins.
Answer:
Mass and acceleration will remain constant
As a result of advancing biotechnology, disease may become a thing of the past.
<span>Michael Porter defined the primaty activities in his value chain.
</span>Advertising is a primary activity. Supply of replacement parts is a primary activity. support; primary primary; primary support; secondary primary; support. These activities <span>are used to provide a company with a </span>competitive advantage in any one of the five activities so it has an advantage in the industry in which it operates and include<span> logistics, operations, outbound logistics, marketing and sales, and service.</span>
