Distinguish between active and passive transport. Make sure to provide examples of each. Why are the functions of active and passive transport instrumental to the cell?

Question

asked Feb 23, 2021 137k views

1 Answer

Raja Vikram · Answer 1 · 2021-03-02T06:07:37+0000

Step-by-step explanation:

Active transport is where a chemical reaction using ATP moves things in/out of the cell through transport proteins within the cell wall. It uses a concentration gradient to trigger the reaction (it goes against the concentration gradient in active transport)
Molecules move against a concentration gradient ( low concentration ―→ high concentration)
Cellular energy (ATP) is required
Passive transport also uses a concentration gradient by diffusion (hydrophobic or very small polar molecules) and facilitated diffusion via carrier proteins and channels
Molecules move along the concentration gradient (high concentration ―→ low concentration)
No cellular energy is required