CHAPTR-5
Name: Surbhi Kumawat
LIFE
PROCESS Subje Biology notes
ct:
Class: 10th
BIOLOGY
INTRODUCTION
Viruses do not show any molecular movement.
Oxidizing and reducing reaction are common
chemical means for break-down of food.
The process of acquiring oxygen from outside
the body, the body and to use it in the process
of breaking food sources for cellular needs is
respiration.
We need material from outside in order to
grow develop, synthesize protein and other
substances
ENERGY SOURCES: FOOD
Some organisms use simple food material
obtained from inorganic sources in carbon
dioxide and water form.
Ex: green plants
Cyno bacteria
, Others break complex substance into simpler
ones.
To do this ~ Enzymes
Ex: Animal
Fungi
ENZYMES: It is a substance that acts as a
catalyst in living
organisms, regulating the rate at which chemical
reactions proceed without itself being attired in
process.
PHOTOSYNTHESIS: is a process by which
autotrophs take in substances from outside and
convert them into stored form of carbon dioxide
and water .
Excess of energy is stored in the form of starch
in plants(internal energy reserve).
Energy from food we eat is stored as GLYCOGEN
in human beings.
Cells in a leaf = Mesophyll cells.
SUNLIGHT
6CO2 +12H2O C6H12O6 + 6O2 + 6H2O
CHLOROPHYLL
EVENTS DURING PHOTOSYNTHESIS:
Absorption of light energy.
Conversion of light energy to chemical energy
and splitting water into hydrogen and oxygen.
Reduction of carbon dioxide into glucose.
Ex: Xerophytes take carbon dioxide at night
and make Malic acid which is acted upon by
chlorophyll during day.
Name: Surbhi Kumawat
LIFE
PROCESS Subje Biology notes
ct:
Class: 10th
BIOLOGY
INTRODUCTION
Viruses do not show any molecular movement.
Oxidizing and reducing reaction are common
chemical means for break-down of food.
The process of acquiring oxygen from outside
the body, the body and to use it in the process
of breaking food sources for cellular needs is
respiration.
We need material from outside in order to
grow develop, synthesize protein and other
substances
ENERGY SOURCES: FOOD
Some organisms use simple food material
obtained from inorganic sources in carbon
dioxide and water form.
Ex: green plants
Cyno bacteria
, Others break complex substance into simpler
ones.
To do this ~ Enzymes
Ex: Animal
Fungi
ENZYMES: It is a substance that acts as a
catalyst in living
organisms, regulating the rate at which chemical
reactions proceed without itself being attired in
process.
PHOTOSYNTHESIS: is a process by which
autotrophs take in substances from outside and
convert them into stored form of carbon dioxide
and water .
Excess of energy is stored in the form of starch
in plants(internal energy reserve).
Energy from food we eat is stored as GLYCOGEN
in human beings.
Cells in a leaf = Mesophyll cells.
SUNLIGHT
6CO2 +12H2O C6H12O6 + 6O2 + 6H2O
CHLOROPHYLL
EVENTS DURING PHOTOSYNTHESIS:
Absorption of light energy.
Conversion of light energy to chemical energy
and splitting water into hydrogen and oxygen.
Reduction of carbon dioxide into glucose.
Ex: Xerophytes take carbon dioxide at night
and make Malic acid which is acted upon by
chlorophyll during day.
