Answer:
Active Transport
Explanation:
The process by which a carrier protein transfers a solute molecule across the lipid bilayer resembles an enzyme-substrate reaction, and in many ways carriers behave like enzymes. In contrast to ordinary enzyme-substrate reactions, however, the transported solute is not covalently modified by the carrier protein, but instead is delivered unchanged to the other side of the membrane.
Each type of carrier protein has one or more specific binding sites for its solute (substrate). It transfers the solute across the lipid bilayer by undergoing reversible conformational changes that alternately expose the solute-binding site first on one side of the membrane and then on the other.
Easy peasy ^-^
One-celled (single-celled)
organisms, however, tend to be different from those with many cells.Larger celled organisms <span>such
as plants and animals, have a higher degree of specialization where the cells
work together and function to create a living organism.</span>
Just based on common evidence....I think it is because of all the fast food restaurants, we work a lot therefore we resort to eating out, fast food places have dollar menus, and we also use motorized transportation to much as well. Most of the cities are not equipped with things like bicycle lanes.