22 results found

Search Results for: primordial

Primordial

primordial 1. First in order; primary; original; of earliest origin; as, primordial condition. The primordial facts of our... Read More

Living things

Living Things Definition A living thing pertains to any organism or a life form that possesses or shows the characteristics... Read More

Organism

An organism refers to a living thing that has an organized structure, can react to stimuli, reproduce, grow, adapt, and... Read More

Abiogenesis

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

Gamete

Definition of Gamete What is a gamete? A gamete is the mature reproductive or sex cell that contains a haploid number of... Read More

First time! Human blood cell turned into a young sex cell

In essence, our body consists of two major types of cells – one group involved directly in reproducing sexually (called... Read More

Last universal ancestor

Definition noun The hypothetical primordial organism from which all other species of organisms on Earth... 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

Human Reproduction

Terminology and Concepts Primary reproductive organs are called gonads - testes in the male and ovaries in the female.... Read More

Leaves

Leaves are highly efficient solar energy converters. They capture light energy and through the process of photosynthesis.... Read More

Stems

External Form of a Woody Twig A woody twig, or stem, is an axis with leaves attached. The leaves are arranged in various... Read More

Fetal membrane

Definition noun, plural: fetal membranes A membrane surrounding the embryo or fetus and is involved in nutrition,... Read More

Spermiogenesis

Spermiogenesis Definition Spermiogenesis is the stage of spermatogenesis wherein the spermatids differentiate into mature... Read More

Blastocoel

Definition noun The primordial, fluid-filled cavity inside the early forms of embryo, e.g. of blastula. Supplement The... Read More

Oogonium

Definition noun, plural: oogonia (zoology) The diploid female gametogonium that gives rise to primary oocyte through... Read More

Principle

Principle 1. Beginning; commencement. Doubting sad end of principle unsound. (Spenser) 2. A source, or origin; that from... Read More

Head kidney

Head kidney --> pronephros 1. The definitive excretory organ of primitive fishes. Synonym: head kidney. 2. In the embryos of... Read More

Intermaxillary segment

Intermaxillary segment The primordial mass of tissue formed by the merging of the medial nasal prominences of the embryo; it... Read More

Sexual reproduction

Sexual reproduction is a mode of reproduction involving the fusion of haploid female gamete (egg cell) and haploid male... Read More

Kidney

Definition noun, plural: kidneys (anatomy) Either of a pair of two bean-shaped organs located at the back of the abdominal... Read More

Cardiac muscle

Definition noun, plural: cardiac muscles (1) The heart muscle of the vertebrates (2) myocardium Supplement The muscles of... Read More

RNA-DNA World Hypothesis?

How did life start as we know it? In the scientific community, the "RNA World Hypothesis" has many adherents. Many believed... Read More