A meal fit for a human heterotroph!
Living Things Get Energy from Different Sources
We all know that living organisms need food to survive. Life forms, however, do not all eat the same things. Autotrophs, known as *self-feeders* are organisms which create "food" using energy from the sun, thermal energy from the Earth, or other such means to feed themselves. All members of the kingdom plantae are autotrophs. Heterotrophs, known as *other-feeders* are beings which feed themselves by eating other creatures, plants, or foods which exist outside of themselves. All members of the kingdoms animalia and fungi are heterotrophs. On Earth, nature provides the following three mechanisms for living creatures to be supplied with energy.
Last modified January 11, 2005 by Lisa Gardiner.
Shop Windows to the Universe Science Store!
"Science, Evolution, and Creationism
", by the National Academies, provides fascinating background on these topics for all, and is particularly useful for the Earth and space science classroom. Check our other books
in our online store
You might also be interested in:
Autotrophs are organisms that can "make their own food" from an inorganic source of carbon (carbon dioxide) given a source of energy. Most autotrophs use sunlight in the process of photosynthesis to make...more
Kingdom Plantae contains almost 300,000 different species of plants. It is not the largest kingdom, but it is a very important one! In the process known as "photosynthesis", plants use the energy of the...more
Photosynthesis is the name of the process by which autotrophs (self-feeders) convert water, carbon dioxide, and solar energy into sugars and oxygen. It is a complex chemical process by which plants and...more
Respiration is the name of the general process where organisms convert sugars and oxygen into biochemical energy. The process happens in all organisms, including animals, plants, fungi, and bacteria....more
Jupiter's atmospheric environment is one of strong gravity, high pressure, strong winds, from 225 miles per hour to 1000 miles per hour, and cold temperatures of -270 degrees to +32 degrees (freezing temperature)....more
In July, 1996, it was announced that Dr. David McKay, along with a team of scientists at Johnson Space Center (a division of NASA), had discovered possible fossils of bacteria in a meteorite named ALH84...more
Saturn's atmospheric environment is one of strong gravity, high pressure, strong winds, from 225 miles per hour to 1000 miles per hour, and cold temperatures of -270 degrees to +80 degrees. With winds...more