Answer:
(a) Centromere It is
required for proper chromosome segregation. The centromere consists of two. sisterchromatids.
It is also necessary at the point chromosome attaches to the spindle apparatus
during mitosis and meiosis.
(b) Cell wall It
gives a definite shape to the ceil and protects the cell from mechanical injury
and infections. It also helps incell to cell interaction and act as a barrier
for undesirablemacromolecules.
(c) Smooth
ER It helps in synthesis of lipids, metabolism of carbohydrates, regulation of
calcium concentration, drug detoxification and attachment of receptor on cell
membrane proteins.
The smooth
ER also contain enzymes-glucose 6 phosphatase, which converts glucose6
phosphate to glycogen, essential in glucose metabolism.
(d) Golgi
apparatus It is the important site for the formation of glycoprotein and
glycolipids.
It is also
involved in the synthesis of cell wall materials and also play an important
role in formation of cell plate during cell division.
(e)
Centrioles They form the base body of cilia and flagella and spindle fibres
that gives rise to spindle apparatus during cell division in animal cells.
They help in formation ofmicrotubules and sperm tail. They also help in cell
division by forming asters, which actsasspindle pole.
You need to login to perform this action.
You will be redirected in
3 sec
