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This section explores the concept of nutrition, specifically distinguishing between autotrophic and heterotrophic nutrition. Autotrophs, like plants, utilize simple inorganic materials through processes such as photosynthesis, while heterotrophs, like animals, consume complex substances broken down through digestion. The importance of these processes for sustaining life and energy production is emphasized.
Nutrition is an essential life process through which organisms obtain energy and raw materials necessary for growth and maintenance.
Nutrition facilitates various life processes, replacing damaged cellular components, supporting growth, and maintaining overall body functions. Energy derived from food fuels biological activities and ensures structural integrity within organisms. By examining these two nutritional modes, we gain insight into the broader life processes necessary for survival.
Autotrophic Nutrition: Producing food from inorganic material.
Heterotrophic Nutrition: Consuming organic material for energy.
Photosynthesis: Conversion of light energy to chemical energy in plants.
In leaves so green, the sun does gleam, Autotrophs feed, it's nature's dream.
Once there was a green plant named Leafy who soaked up the sun and turned air and water into food, sharing its energy with all.
Acronym P.A.S. for Photosynthesis: P for Sunlight, A for Air (CO2), S for Soil (water).
Example 1: Green plants use sunlight to convert CO2 and H2O into glucose during photosynthesis.
Example 2: Animals like cows consume grass and digest it using enzymes.
Term: Autotrophs
Definition: Organisms that produce their own food using inorganic substances and energy from the sun.
Organisms that produce their own food using inorganic substances and energy from the sun.
Term: Heterotrophs
Definition: Organisms that obtain food by consuming other organisms, requiring complex organic substrates.
Organisms that obtain food by consuming other organisms, requiring complex organic substrates.
Term: Photosynthesis
Definition: The process by which autotrophs convert light energy into chemical energy stored in glucose.
The process by which autotrophs convert light energy into chemical energy stored in glucose.
Term: Enzymes
Definition: Biological catalysts that speed up the breakdown of complex food into simpler molecules.
Biological catalysts that speed up the breakdown of complex food into simpler molecules.
Term: Starch
Definition: A complex carbohydrate that serves as an energy reserve in plants.
A complex carbohydrate that serves as an energy reserve in plants.