THE CELL
TRANSPORT INTO AND OUT OF THE CELL
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
It requires energy
|
|
|
it does not require energy
|
|
|
It moves substances down the concentration gradient
|
|
|
it moves material from high to low concentration
|
Detailed explanation-1: -Active transport requires energy for the process by transporting molecules against a concentration or electrochemical gradient.
Detailed explanation-2: -Active transport occurs across the plasma membrane against the concentration gradient from their lower to higher concentration. It requires ATP. So it is an energy dependent process. Faciliated transport is a type of active transport.
Detailed explanation-3: -Primary active transport directly uses a source of chemical energy (e.g., ATP) to move molecules across a membrane against their gradient.
Detailed explanation-4: -In cellular biology, active transport is the movement of molecules or ions across a cell membrane from a region of lower concentration to a region of higher concentration-against the concentration gradient. Active transport requires cellular energy to achieve this movement.