Flipped Notes			Class 9 Biology
Chapter 5 The Fundamental Unit of Life
1.	Who coined the word ‘cell’?               _________________________
2.	How did the cells appear under the microscope?              _________________________
3.	Who developed the classical cell theory and when?           _________________________
4.	Give 3 examples of unicellular organisms?                       __________________________
5.	What are multi-cellular organisms? ___________________________________________________________________________________
6.	Give an example each, of cells which can change their shape and the ones which have a peculiar shape. ___________________________________________________________________________________
7.	Name the cell organelles present in almost every cell? ___________________________________________________________________________________
8.	What is a selectively permeable membrane? ___________________________________________________________________________________
9.	Name the gases which can be exchanged by the process of diffusion? ___________________________________________________________________________________
10.	In Diffusion,______________ moves out of the cell, from a region of ____________ concentration, to a region of _______________ concentration.
11.	Osmosis is the passage of _______________ from a region of ____________ concentration to a region of _______________ concentration through a semi-permeable membrane.
12.	If the cell is kept in a solution which has higher concentration of water than the cell, the cell will __________ water by __________ . Such a solution is known as a ___________ solution. Hence, the cell will _____________.
13.	If the cell is kept in a solution which has lower water concentration than the cell, the cell will ________________ water by ________________. Such a solution is known as a _____________ solution. Hence the cell will
14.	The flexibility of the cell membrane enables the cell to engulf in food and other materials from its external environment by a process known as
15.	Cell organelles Structure/ Characteristics Occurrence Function Plasma membrane Regulates entry and exit of substance in and out of the cell Made up of cellulose Nucleus Plant and animal cells Fluid content inside the plasma membrane Interconnected network of membrane vesicles Ribosomes Protein synthesis Storage, modification and packaging of products in vesicles Membrane-bound sacs filled with digestive enzymes Mitochondria Plant cells only Vacuoles