Viruses show no molecular movement in them until
they infect a cell, that is why it is not known if they're
alive or not.
Diffusion isn't enough to get oxygen in multi cellular
organisms as cells may not be in direct contact with the
environment, unlike in unicellular.
Nutrition:
Process of obtaining nutrients and transferring it from
outside to inside the body is called nutrition
Nutrients are substances essential for growth &
development of the body.
Enzymes are bio - catalysts which break down food into
simpler substances so that it can be digested.
Autotrophic nutrition is when organisms manufacture
their own food by photosynthesis. For example plants,
blue-green algae.
Events in photosynthesis:
• Absorption of light energy by chlorophyll
• Conversion of light energy to chemical
• Splitting of water molecules Into hydrogen and oxygen.
• Reduction of carbon dioxide to carbohydrates.
they infect a cell, that is why it is not known if they're
alive or not.
Diffusion isn't enough to get oxygen in multi cellular
organisms as cells may not be in direct contact with the
environment, unlike in unicellular.
Nutrition:
Process of obtaining nutrients and transferring it from
outside to inside the body is called nutrition
Nutrients are substances essential for growth &
development of the body.
Enzymes are bio - catalysts which break down food into
simpler substances so that it can be digested.
Autotrophic nutrition is when organisms manufacture
their own food by photosynthesis. For example plants,
blue-green algae.
Events in photosynthesis:
• Absorption of light energy by chlorophyll
• Conversion of light energy to chemical
• Splitting of water molecules Into hydrogen and oxygen.
• Reduction of carbon dioxide to carbohydrates.
