BIOLOGY II

• autotrophic - are organisms that can produce their own food, using materials from inorganic sources.
• Heterotroph - an organism that cannot manufacture its own food by carbon fixation and therefore derives its intake of nutrition from other sources of organic carbon, mainly plant or animal matter.
• organic compounds - any of a large class of chemical compounds in which one or more atoms of carbon are covalently linked to atoms of other elements, most commonly hydrogen, oxygen, or nitrogen.
• inorganic compounds - is typically chemical compounds that lacks carbon-hydrogen bonds, that is a compound that is not an organic compound.
• Consumer - are living creatures that eat organisms from a different population.
• producer - are organism that make their own food they are also known as autotrophs.
• Nutrition is the study of nutrients in food, how the body uses them, and the relationship between diet, health and disease.
• Nutrition - is the biochemical and physiological process by which an organism uses food to support its life
• Autotrophic Nutrition - type of nutrition in which organisms that obtain energy from inorganic molecules.
• Photoautotrophic nutrition - this is a type of autotrophic nutrition in which the organism uses light energy to convert simple substances to complex organic compounds.
• Chemoautotrophic nutrition - is a type of autotrophic nutrition in which the oxidation of inorganic compounds is used as an energy source for the conversion of simple inorganic compounds to complex organic compounds.
• Heterotrophic nutrition - type of nutrition in which organisms obtain energy from other organisms.
• Parasitic Organisms or Parasites - This is a type of heterotrophic nutrition, in which they live on or inside other living organisms called hosts and obtain their food from them.
• Saprophytic Organisms or Saprophytes - is a type of heterotrophic nutrition in which organism that feed on dead matter.
• Holozoic Organisms - this is a type of heterotrophic nutrition in which it is the process of ingestion of complex organic matter. ex. Human eat animal.
• Digestion - is the holozoic nutrition in humans. It is the breaking down of food into parts that can be utilized by the body.
• Mechanical Digestion - this is a type of human digestion in which food is broken down by physical means. For example is chewing.
• Chemical Digestion - this is the kind of human digestion in which the food is broken down into smaller pieces by chemical reactions.