Kitab Nagri

Vacuole and its Function   Location:   In plant cell a big vacuole is present in the center of the cell. And in animal cell many small vacuoles are present in cytoplasm.   Shape:-   Plant vacuole is in the shape of large structure while animal vacuoles are oval in shape.   Function:   i)…

Ribosomes and its Function   Location:   They are present in cytoplasm on rough endoplasmic reticulum.   Shape:-   They are present in the form of granules.   Structure:   They are non-membranous occur freely on rough endoplasmic reticulum.   Function:   They are involved in protein synthesis.   Exercise in the morning that invigorates…

Centrioles and their Function   Location:   It is present near nucleus in the form of pairs. They are absent in higher plants.   Structure:   They are present in the form of triplicate micro tubules.   Function:   i) They help in formation of spindles and play important role in cell division. ii) They…

Endoplasmic Reticulum and its Function   Location:   They are present between cell membrane and nucleus.   Shape:-   They are tube like structures   Types:-   They are of two types:   i) Smooth Endoplasmic Reticulum:   They do not have ribosomes. They do not involve in protein synthesis.   ii) Rough Endoplasmic Reticulum:…

Note on Golgi Bodies   Location:   It is located inside the cytoplasm and scattered in all directions of the cell.   Structure:   Golgi complex is present in the form of smooth membrane which is called sisternae. These sacs are attached to each other.   Function:   They involve in cell secretions.   What…

Short Note on Mitochondria   Location:   They are located in cytoplasm.   Shape:-   They are round or oval in shape.   Number:   The number of mitochondria depends upon the function of organisms.   Structure:   i) Outer membrane of mitochondria is smooth.   ii) Inner membrane is greatly folded in the mitochondrial…

Definition of Cytoplasm   Location:   It is jelly like substance and present between nucleus and cell membrane.   Composition:   It is composed of two major components:   i) Organic substances like carbohydrates, fats and proteins etc.   ii) Inorganic substances like water and salts.   Function:   i) It provide site for all…

Chromosomes and its 2 Components   Shape:-   Chromosomes are thread like structures.   Centromere:   It is present in the center of chromosomes.   Chromotids:   They are two in numbers and attached on centromere.   Number of chromosomes:   Chromosomes are constant in any organisms and never change through out the life cycle.…

Inter Notes of Biology   We are going to share with you the notes for different classes as mention above just for the help of our students, so that they can perform best in exams and in the near future, they can become good citizen of our society and take part in the development of…

What is Nucleus in Cell   In animals cell it is present in center of the cell. In plants it is present at side due to presence of large vacuole.   Structure:   i) A nuclear membrane is present outside of the nucleus. It give the shape and support to nucleus. ii) Nuclear pores are…