THE CELL
STRUCTURE AND FUNCTION OF THE CELL
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
Supports the cell and gives it a regular shape.
|
|
|
Controls the movement of substances into and out of the cell.
|
|
|
Contains DNA, which is the genetic information of the organism.
|
|
|
Site where chemical reactions take place.
|
Detailed explanation-1: -A cell wall is a structural layer surrounding some types of cells, just outside the cell membrane. It can be tough, flexible, and sometimes rigid. It provides the cell with both structural support and protection, and also acts as a filtering mechanism.
Detailed explanation-2: -The cell wall surrounds the plasma membrane of plant cells and provides tensile strength and protection against mechanical and osmotic stress. It also allows cells to develop turgor pressure, which is the pressure of the cell contents against the cell wall.
Detailed explanation-3: -Plant cells are like small balloons surrounded by a strong cell wall. Their internal pressure can be higher than the pressure in a car tire. It is this pressure that gives non-woody plant tissue its shape.
Detailed explanation-4: -You have learnt earlier that the cell membrane gives shape to the cell. In addition to the cell membrane, there is an outer thick layer in cells of plants called cell wall.
Detailed explanation-5: -Gives the cell a definite shape and structure. Provides structural support. Protection against infection and mechanical stress. Separates interior of the cell from the outer environment.