Spontaneous generation is the belief that life can be formed from nonliving things, whereas biogenesis is the creation of life from other living things. Several experiments have proved that spontaneous generation is an illogical body of thought.
Developed in the 17th century, the concept of spontaneous generation became popular during the 19th century. Experiments by Francesco Redi, Lazzaro Spallanzani and Louis Pasteur helped prove that spontaneous generation was impossible. A non-living thing cannot create a living thing even in a life-sustaining environment such as an incubator. Life forms, either in air or liquid, need to be present for life to thrive.
Biogenesis is a body of thought derived from the experiments conducted by the scientists that studied spontaneous generation. The term was coined by Henry Charlton Bastian in response to Pasteur's findings, which made evident that organic life cannot come from a non-living source. Biogeneis is also used as a term to describe the chemical reactions that take place in living organisms. Also known as biosynthesis, it is the process by which different compounds combine to form complex molecules such as amino acids, proteins and DNA molecules. Unlike spontaneous generation, biogenesis is widely accepted as valid in the scientific community.Learn More
All living things require a source of energy, nutrients, water, space to grow and reproduce, and a relatively stable environment that allows homeostasis. Many organisms also require oxygen, but this is not a universal requirement, and oxygen is actually deadly to certain organisms. Indeed, beyond these basic categories of needs, the requirements of organisms vary vastly from species to species.Full Answer >
The characteristics that all living things share are cells, growth, reproduction, adaptation, homeostasis, use of energy and response to the environment. Using these characteristics, it is easy to determine if something is living, dead or non-living.Full Answer >
Respiration is one of the requirements for living things because it is the process where organisms exchange oxygen and carbon dioxide. This is related yet different from cellular respiration, which is the process where individual cells convert oxygen into carbon dioxide while converting food to energy.Full Answer >
Examples of living things are elephants, zebras, cows, sheep, fir trees, oak trees, sharks, whales, otters, rubber trees, monkeys and humans. All living things are broadly classified into plants and animals.Full Answer >