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variation of organisms. Neuroscientists study the nervous system. Developmental biologists study the process of development and growth of organisms Biochemists...

viruses, despite that fact that they evolve like organisms. Other problematic cases include colonial organisms; a colony of eusocial insects is organised adaptively...

with other larger organisms; some of which are mutually beneficial (mutualism), while others can be damaging to the host organism (parasitism). If microorganisms...

200 mi), but contains many organisms of many types of species. When considering singular entities, the largest organisms are clonal colonies which can...

Michael Levin is an American developmental and synthetic biologist at Tufts University, where he is the Vannevar Bush Distinguished Professor. Levin is...

it allows organisms to move, grow, and reproduce. Finally, all organisms are able to regulate their own internal environments. Biologists are able to...

biology was largely split between organismal biology—the fields that deal with whole organisms and groups of organisms—and the fields related to cellular...

includes long-lived organisms that are currently still alive as well as those that are dead. Determining the length of an organism's natural lifespan is...

of evolution. The study of digital organisms is closely related to the area of artificial life. Digital organisms can be traced back to the game Darwin...

The smallest organisms found on Earth can be determined according to various aspects of organism size, including volume, mass, height, length, or genome...

is a major puzzle for biologists. The two-fold cost of sexual reproduction is that only 50% of organisms reproduce and organisms only pass on 50% of their...

(circumscribing) and classifying groups of biological organisms based on shared characteristics. Organisms are grouped into taxa (singular: taxon) and these...

phenotypes (physical characteristics) of an organism. These changes in the phenotypes will be an advantage to some organisms, which will then be passed on to their...

aquatic organisms that can actively and persistently propel themselves (i.e. swim) through a water column. The term was proposed by German biologist Ernst...

of a close and long-term biological interaction between two biological organisms of different species, termed symbionts, be it mutualistic, commensalistic...

oxygen for respiration. Aerotolerant organisms must continue fermentation in the presence of oxygen. Facultative organisms grow in both oxygen rich media and...

"compilospecies". Biologists and conservationists need to categorise and identify organisms in the course of their work. Difficulty assigning organisms reliably...

Multicellular organisms arise in various ways, for example by cell division or by aggregation of many single cells. Colonial organisms are the result...

mid-nineteenth century, that living organisms are made up of cells, that they are the basic structural/organizational unit of all organisms, and that all cells come...

A geneticist is a biologist or physician who studies genetics, the science of genes, heredity, and variation of organisms. A geneticist can be employed...