Chapter -1
THE FUNDAMENTAL UNIT OF
LIFE
1 marks questions :
1.Plasma
membrane is made up of which two components ?
2.Give
an example of unicellular organism.
3.What
is the function of mitochondria ?
4.What
does ATP stand for ?
5.Give
the name of colourless plastids.
6.What
is the outermost layer found in animal cells ?
7.Which
organelle helps in photosynthesis ?
8.Which
organelle digests unwanted organic substances ?
9.Which
organelle helps in protein synthesis ?
10.Which
cell organelle is called ‘the kitchen of cell ?
11.Name
two types of plastids.
12.Which
type of plastids help in photosynthesis ?
13.What
do mitochondria contain ?
14.Name
the cell organelle responsible for protein synthesis.
15.Write
any two differences between prokaryotic and eukaryotic cells.
2 marks questions :
1.Differentiate
between Diffusion and osmosis.
2.What
is a cell wall and how is it formed ?
3.What
is the function of the cell wall ?
4.Why
mitochondria are also called ‘The Powerhouse of cell’ ?
5.There would be no plant life if chloroplasts
did not exist. Justify.
6.What are the types of
plastids and their colour ?
7.What
is the functional difference between a plasma membrane and cell wall ?
8.What
is the function of nuclear membrane ?
9.Write
a note on Golgi apparatus and the function it performs.
10.Which
cell organelle controls most of the activities of the cell ?
11.Why
is the cell called the structural and functional unit of life ?
12.Which
organelle is known as the powerhouse of the cell ? Why ?
13.Which cell organelles
are called ‘digestive bags’ and why ?
14.What
is DNA ? Explain its functions.
15.What
are the various functions performed by cell ?
16.What
is the function of Golgi body ?
17.What
are the functions of lysosomes ?
18.What
are chloroplasts ? What is their function ?
19.What
are the various types of plastids ?
20.What
are the functions of centrosome ?
21.What
is the significance of osmosis ?
22.Why
is the cell called “the unit of life” ?
23.Give
the differences between diffusion and osmosis.
24.What
is a gene ? Give its functions.
3 marks questions :
1.What
is the difference between plasma membrane and cell wall ? Give the functions of
each one.
2.Which
organelle is the most prominent and important structure in a cell, and also
acts as the control centre of the cell and why ?
3.What
are the differences between RER and SER ?
4.What are lysosomes,peroxisomes and
centrosomes ? Write their functions.
5.Name the different living
and non-living parts of a cell and
organelles.
6.Give
the differences between cytoplasm and nucleoplasm.
7.Describe
the structure of Mitochondria.
8.Which
type of plastids help in photosynthesis ? Draw its diagram.
9.Describe
the structure of nucleus.
10.Write
down the functions of plastids.
11.Write
about the functions of cytoplasm.
12.Name
the cell organelles which are called ‘suicide bags’ and ‘power house’ of the
cell. Why are they so called ? Give reason.
5 marks questions :
1.Describe
the cell and its structure.
2.Draw
a labeled diagram of prokaryotic and eukaryotic cells and differentiate between
them.
3.Draw
a labeled diagram of mitochondria. Write the functions of mitochondria.
4.Write
notes on each of the main cell organelles.
5.Name
the three major functional regions of calls. Briefly mention the component of
each and explain the function of each. Draw a labelled diagram of a plant cell.
6.Draw & label a plant cell. Write the main
function of:
|
(i)
Mitochondria
|
(ii) Chloroplast
|
|
(iii) Plasma
membrane
|
(iv) Cell
Wall
|
|
(v) Lysosomes
|
(vi) Chromosomes
|
M C Q :
1. To prepare a temporary
mount of onion peel, which of the following stain is used ?
(a)Safranin
(b)Methylene
blue
(c)Iodine
(d)
None of the above.
2. The function of cell membrane
is to :
(a) Bound the protoplasm
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