CELL STRUCTURES AND FUNCTION
CELL STRUCTURE
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
chromosomes migrating during cell division
|
|
|
water diffusing throughout the cytoplasm of a cell
|
|
|
cilia moving rapidly to propel a single-celled organism through water
|
|
|
proteins moving ions from low to high concentration across a cell membrane
|
Detailed explanation-1: -The most famous example of a primary active transport protein is the sodium-potassium pump. It is this pump that creates the ion gradient that allows neurons to fire. The sodium-potassium pump begins with its sodium binding sites facing the inside of the cell. These sites attract sodium ions and hold onto them.
Detailed explanation-2: -The sodium-potassium pump is the most prevalent and well-known example of active transportation. On the cell membrane, a sodium-potassium pump moves 3 sodium ions outside the cell and 2 potassium ions inside the cell per ATP.
Detailed explanation-3: -During active transport, a protein pump uses energy, in the form of ATP, to move molecules from an area of low concentration to an area of high concentration. An example of active transport is the sodium-potassium pump, which moves sodium ions to the outside of the cell and potassium ions to the inside of the cell.
Detailed explanation-4: -Sodium-potassium pump, the most important pump in the animal cell is considered as an example of primary active transport. In this process of transportation, the sodium ions are moved to the outside of the cell and potassium ions are moved to the inside of the cell.