Question

For the following question, please answer in essay format( a page and half long minimum)( if hand written please print legibly and be clear about which part of the question are answering, in complete sentences, with as much detail as possible. Thanks!

Describe the different types of movements across the cell membrane. Which kinds of substances can move across freely, and which cannot? How do they differ in terms of passive and active transport? What types of gradients control their movement, and how are these gradients established? How can these gradients be used for the transport of other substances? Give examples of each category.

Answer 1

different type of molecule has a different type of transport mechanism across the cell membrane such as diffusion, osmosis, facilitated diffusion, and active transport. a nonpolar substance such as the hydrophobic molecule crosses the cell membrane passively and the hydrophilic molecule is unable to cross the cell membrane freely. passive transport without the involvement of energy molecule transport across the cell.but in case of active transport energy used for the transport of molecule across the cell. electrochemical gradient controls the movement of transport. sodium-potassium transport is a good example which regulated by the electrochemical gradient.