Question

What are unicellular organisms? Give examples.
What is diffusion?
SECTION B
Why are lysosomes known as 'suicidal bags' of a cell ?
PP - 12
Draw the diagram that shows the interconversion of states of matter.​

Answer 1

Answers :

1) The organisms who have only one cell structure or those who complete their life cycle in one cell are called unicellular . Uni means one and cellular means cell . For example : Amoeba , etc .

2) The movement of a substance from region of higher concentration to region of lower concentration is called diffusion . Diffusion depends upon the concentration gradients and stop once the concentration becomes same .

3) Lysosomes are called the suicidal bags of the cells because these have enzymes that helps in digestion of foreign harmful material in the cell . When the cell gets damaged , these laysosomes burst and release the enzyme into the cell that digest the cell itself causing its death . Therefore , because of their self destructive nature , lysosomes are called suicidal bags of the cell .

4) Refer to attachment .

Answer 2

Explanation:

${\red{\underline{\underline{\bold{Question:-}}}}}$

1. What are unicellular organisms ?
2. What is diffusion ?
3. Why are lysosomes called suicidal bags of a cell?
4. Draw the diagram that shows the inter conversion of states of matter.

${\green{\underline{\underline{\bold{Answer:-}}}}}$

1) Unicellular organisms:-

The organisms which have a single ( only one ) cell.

Uni - one ; cellular - cell

In unicellular organisms only one cell carries out all the different functions of a body.

Examples :- Ameoba, Paramecium , Bacteria, Yeast etc;

2) Diffusion :-

Diffusion is the movement of solvent particles( water molecules) from a region of higher concentration to a region of lower concentration without the involvement of a semi-permiable membrane.

It is the process by which water enters the root hairs.

3) Why are lysosomes called suicidal bags ?

Lysosomes contains a large number of enzymes to digest the foriegn particles that enter the cell. That enzyme is called hydrolytic enzyme. The released enzyme digest the own cell and ultimately the cell dies. Since , the lysosome kills it's own cell it is called suicidal bags.

4) Interconvertion of states of matter:-

In the attachment given above