Question

Q-9 What is the function of:
(a) Cellulose in cell wall?
(b) Presence of deeply folded membrane in mitochondria?
(c) SER in cell?​

Answer 1

Answer:

Explanation:

a)A major role of the cell wall is to form a framework for the cell to prevent over expansion. Cellulose fibers, structural proteins, and other polysaccharides help to maintain the shape and form of the cell. Additional functions of the cell wall include: Support: The cell wall provides mechanical strength and support.

b)The Powerhouse of our cell known as Mitochondria(S.Mitochondrion) has outer membrane and inner membrane. The inner membrane known as the Cristae is folded.

The folds of the inner membrane or the Cristae provide an increase in the Surface Area which gives the Mitochondrion more locations for ATP( the energy currency) production to occur. In fact, without them the mitochondrion would not be able to keep up with the cell’s ATP needs.

c)The role of digestive enzymes in lysosomes:

The digestive lysosomes is to clean the debris that is present in the cell, they also play a major role in the immune system activity of the cell in which they help to digest the pathogens that enter the cell.  

The lysosomes also play a vital role in apoptosis, programmed cell death to recycle the apoptotic bodies that are formed in a cell. The lysosomes contain digestive enzymes and has an acidic pH to help in all these act

Answer 2

Answer:

a) Cellulose is a water insoluble polysaccharide made up of thousands of glucose molecules and has a great tensile strength. It is present in the cell wall of a plant cell. It helps the cell maintains the shape of a plant and tolerate turgor pressure, which is the pressure exerted from the fluid contained in the cell.

basically what you have to keep in mind is that

1. it helps to maintain the shape of a plant.

b) The inner membrane known as the Cristae is folded. The folds of the inner membrane or the Cristae provide an increase in the Surface Area which gives the Mitochondrion* more locations for ATP( the energy currency) production to occur.

according to ncert it is the power house of a cell...

c)sER is a membrane-bound network of tubules without surface ribosomes. sER is not involved in protein synthesis. Its main function is the synthesis of lipids, steroids, and carbohydrates, as well as the metabolism of exogenous substances, such as drugs or toxins.

Explanation: I think it's of class 9th or 10th... I highlighted the point which is required by all boards at you age.....

in the second point no need to write mitochondrion.... for you mitochondria is enough.... it will be like ATP IS PRODUCED IN MITOCHONDRIA