Class 9 bio chapter 5 ( fundamental unit of life) important notes .
Answers
these are some important topic
1 cell ..... cell is the basic structure and functional units of life.
cell is termed as the structural unit of life as it provides structure to our body.
cell- tissue-organ- organ system-body.
cell is considered as the functional units of life as all the functions of the body take place at the cell level .
example: respiration, exereation , nutrition etc.
cell is first discovered by Robert Hooke in 1665. the main topics of this chapter was:
cell theory
unicellular organisms
multicellular organisms
structure of cell
cell wall
nucleus
cytoplasm
cell membrane or plasma membrane
cell organelles
Golgi body
endoplasmic reticulum
rough endoplasmic reticulum
smooth endoplasmic reticulum
ribosome
mitochondria
plastids
chloroplast
chromoplasts
leucoplast
lysosomes
vacuole
peroxisome
centrosome
next topic is:
types of cell
there are two types of cell
prokaryotic and eukaryotic
prokaryotic cells: prokaryotic cells are cell in which the nucleus or membrane bound organelles are absent
organisms that have prokaryotic cells are unicellular and are called prokaryotic cells. example:: Bacteria
eukaryotic cells: eukaryotic cells are that contains a true nucleus and membrane bound organelles, ( Golgi body, mitochondria, plastids, etc ) example::: plans cell and animal cell..
main topics is:
cell shape
cell size
cell number
protoplasm
cytoplasm
nucleaplasm
animal cell or plants cell
diffusion
osmosis
hypothesis solutions
isotonic solutions
hypothesis solutions
endocytosis
phagocytosis
pinocytosis
exacytosis
plasmolysis
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