103 results found

Search Results for: arise

Arise

Arise 1. To come up from a lower to a higher position; to come above the horizon; to come up from one's bed or place of... Read More

Biogenesis

Definition noun plural: biogeneses (1) The process in which life forms arise from similar life forms (2) A theory that... Read More

Spontaneous generation

Definition noun plural: spontaneous generations The previously popular notion that living organisms arise or develop from... Read More

The FIFTH MIRACLE: The Search for the Origin and Meaning of Life

 The FIFTH MIRACLE: The Search for the Origin and Meaning of Life    ... Read More

Areole

Definition noun, plural: areoles (botany) A spot, which may be raised or depressed, on the cactus body where spines, hair,... Read More

Diploid

Diploid Definition Let's first understand the meaning of the word - diploid. From the words ‘di’, meaning "two", and... Read More

Pleiotropy

Pleiotropy Definition When one single gene starts affecting multiple traits of living organisms, this phenomenon is known... Read More

Origins of Life : On Earth and in the Cosmos (2nd Ed)

 Origins of Life : On Earth and in the Cosmos   ... Read More

Etioplast

Definition noun, plural: etioplasts (botany) A plastid that developed in darkness or under low light conditions Supplement A... Read More

Vascular Plants: Ferns and Relatives

These plants are seedless plants, but unlike the bryophytes, they do have vascular tissue (xylem and phloem). Because of the... Read More

At Home in the Universe: The Search for the Laws of Self-Organization and Complexity

At Home in the Universe: The Search for the Laws of Self-Organization and Complexity  ... Read More

Abiogenesis

Definition noun plural: abiogeneses a·bi·o·gen·e·sis, eɪbaɪəʊˈdʒɛnəsɪs (1) The theory postulating that... Read More

Natural mutation

natural mutation --> spontaneous mutation A mutation which occurs by itself without first being affected by a mutagen, for... Read More

Cell theory

Definition noun The scientific theory describing cells, e.g. the cell as the basic unit of living organisms, and that all... Read More

Generation of resting membrane potential

Stephen H. Wright Department of Physiology, College of Medicine, University of Arizona, Tucson, Arizona 85724... Read More

Population Regulation in an Ecosystem

Darwin focused some of this work in regards to the population size of a species, and what factors may affect them. He... Read More

Truncus sympathicus

Definition noun Latin for sympathetic trunk: the paired strands of nerve fibers that run from the base of the skull to the... Read More

Chelicera

Definition noun, plural: chelicerae Either of the first set of appendages of the chelicerates (e.g. arachnids, horseshoe... Read More

Rete testis

Definition noun, plural: rete testes A network of tubules in the hilum of the testicle, and serves as passageway for sperm... Read More

Autoimmune disease

Definition noun, plural: autoimmune diseases A type of disease as a result of an immune response of the body against own... Read More

Mitochondrial inheritance

Definition noun An inheritance pattern that results from the expression of mitochondrial DNA. Supplement This form of... Read More

Metaphloem

Definition noun, plural: metaphloems A component of the primary phloem that develops often following the differentiation of... Read More

Pedipalp

Definition noun, plural: pedipalps Either of the second pair of appendages located laterally to the chelicerae and... Read More

Ecological succession

Definition noun (ecology) The progressive succession of a community or group of species in an ecosystem over... Read More

Polymorphism

Polymorphism Definition The occurrence of two or more different forms or morphs in the population of a species is referred... Read More

Granulopoiesis

Definition noun The hematopoiesis of granulocytes Supplement Hematopoiesis is the process of forming new blood cellular... Read More

Multiple alleles

Alleles are the pairs of genes occupying a specific spot called locus on a chromosome. Typically, there are only two alleles... Read More

Arcus vertebrae

Arcus vertebrae --> vertebral arch The posterior projection from the body of a vertebra that encloses the vertebral foramen;... Read More

Hyaline cartilage

Hyaline Cartilage Definition Before we define hyaline cartilage, let us understand what cartilage is. What is cartilage? Is... Read More

Archeocerebellum

Archeocerebellum --> vestibulocerebellum Those regions of the cerebellar cortex whose predominant afferent fibres arise... Read More

Homogenetic

Homogenetic (Science: biology) Homogenous; applied to that class of homologies which arise from similarity of structure, and... Read More

Isoenzyme

Isozymes (also known as isoenzymes) are enzymes that differ in amino acid sequence but catalyze the same chemical reaction.... Read More

Adaptive evolution

Definition noun A kind of evolution that involves evolutionary changes that are adaptive to a particular... Read More

Glochid

Definition noun, plural: glochids Any of the hair-like spine or bristle often with a barbed tip on... Read More

Neutral theory of molecular evolution

Definition noun A theory stating that evolutionary changes particularly at the molecular level arise from genetic drift of... Read More

Blood cell

Definition noun, plural: blood cells Any of the cells in blood, i.e. a red blood cell (erythrocyte) or a white blood cell... Read More

Genetic Information and Protein Synthesis

Genetic Code Genes are sequences of DNA nucleotides that carry and transmit the information specifying amino acid sequences... Read More

Pollution in Freshwater Ecosystems

As with all ecosystems, the existence and operations of human society inevitably have an effect on the way of life in a... Read More

Roots

Upon seed germination, the embryo root, called the radicle, grows and develops into the first root. The radicle may thicken... Read More

Polyploidy

Reviewed by: Mary Anne Clark, Ph.D. Polyploidy Polyploidy is defined as the state of being polyploid, which... Read More