Metabolism is the sum total of the biochemical reactions involves in release and utilization of energy or energy exchange within the organisms.

Characters of dicotyledons:
i) Seed has two cotyledons
ii) Plants have tap root system, leaves with reticulate venation

Sir Alexander Fleming discovered penicillin

Chemical substance used to alter the speed of the reaction is called a catalyst and the process is called catalysis.

Metals can be drawn into thin wires. This property of metals is called ductility.
Example: Copper wires.

i) The pressure exerted by the mercury column in a barometer is considered as the pressure of magnitude 'one atmosphere'.
ii) 1 atm = pressure due to 76 cm of mercury column in a barometer = 1.01 x 10⁵ Nm^-2.

The SI unit of Luminous Intensity is Candela.

(i) Computer is an electronic device that process the data and information according to our needs.
(ii) It follow instructions, called programs which determine the tasks the computer will perform.

The process of changing less valuable metal into gold is called alchemy.

Pascal's law states that the pressure applied at any point of a liquid at rest, in a closed system will be distributed equally through all directions of the liquid.
Applications of Pascal's law:
i) In an automobile service stations, the vehicles are lifted upward using the hydraulic lift, which works as per Pascal's law.
ii) Automobile brake system works according to Pascal's law.
iii) The hydraulic press is used to make the compressed bundles of cloth or cotton so as to occupy less space.

Mole is defined as The amount of substance which contains 6.023 x 10²³ entities.

Angle of inclination = 90°
Number of images for=\(\frac { { 360 }^{ 0 } }{ \theta } -1=\frac { { 360 }^{ 0 } }{ { 90 }^{ 0 } }\)-1=4-1=3