Page 14 - SCERT Kerala State Syllabus 8th Standard Basic Science Textbooks English Medium Part 1_Neat

You are already familiar with the cell wall,
Protoplasm and
the cell membrane (plasma membrane), the
cytoplasm
cytoplasm, the nucleus etc. What are the
other parts you observed in the figure? List All substances inside the cell membrane
them. constitute the protoplasm. Cytoplasm
$ $ $ is the part of the protoplasm excluding
the nucleus. All factors required for life
$ $ $
activities are present in the cytoplasm.
To get more information, pictures etc., Cell organelles are the specific parts
regarding cell – http://en:wikipedia.org/ seen in the cytoplasm to perform
wiki/cell_biology
physiological functions.
Read the following information to know more
about each cell organelle.

Mitochondrion

Power house of the cell. Helps in the
production and storage of energy.

Abundantly seen in the cells of liver, brain and
muscles where energy requirement is high.

Endoplasmic reticulum

The passage in the cell. Conduction of
materials inside the cell takes place through
this organelle.

Also known as cytoskeleton as it provides
firmness and shape to the cell.

Ribosome

Centre of protein synthesis in the cell.
Seen either attached to the endoplasmic
reticulum or free in the cytoplasm.

Basic Science VIII 13