36 results found

Search Results for: flagellum

Flagellum

Definition noun, plural: flagella (1) (biology) Long, slender, threadlike, whiplike extension of certain cells or... Read More

Opisthomastigote

Definition noun, plural: opisthomastigotes (protistology) The developmental stage or the morphological form in the lifecycle... Read More

Epimastigote

Definition noun, plural: epimastigotes (protistology) The developmental stage or the morphological form in the lifecycle of... Read More

Dinoflagellate

A dinoflagellate is a flagellate algae characterized by their two flagella of unequal length. One of the flagella is lying... Read More

Archaellum

Definition noun, plural: archaella A whip-like structure of filaments that extends outside the cell of many... Read More

Choanoflagellate

Definition noun, plural: choanoflagellates A flagellate protozoan of the genera Monosiga and Proterospongia of the class... Read More

Choanomastigote

Definition noun, plural: choanomastigotes (protistology) The developmental stage or the morphological form in the lifecycle... Read More

Flagellate

Definition noun, plural: flagellates A cell or an organism that has flagella adjective (1) Of, pertaining to, characterized... Read More

Trypomastigote

Definition noun, plural: trypomastigotes (protistology) The developmental stage or the morphological form in the lifecycle... Read More

Spermiogenesis

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

Prokaryote

Prokaryote refers to any of the group of living organisms primarily characterized by the lack of a true nucleus and other... Read More

Spermatogenesis

Spermatogenesis Definition Spermatogenesis is the biological process of producing sperm cells. It occurs in the male gonad... Read More

Bacteria

Bacteria Definition What are bacteria? What is the definition of bacteria in biology? Bacteria are defined as organisms... Read More

Promastigote

Definition noun, plural: promastigotes (protistology) The developmental stage or the morphological form in the lifecycle of... Read More

Golden algae

In phycology, the golden algae are algal species that are found mostly in freshwater. They are also called the chrysophytes.... Read More

Mitochondrial DNA

Mitochondrial DNA Definition noun plural: mitochondrial DNAs The genetic material in the mitochondrion that carries code... Read More

Spermatid

Spermatid Definition What are spermatids? Let us define spermatid and understand its role in reproduction. A spermatid... Read More

Vibrio cholerae

Definition Noun A gram-negative single polar flagellum bacterium associated with cholera infection in... Read More

Exflagellation

Exflagellation The extrusion of rapidly waving flagellum-like microgametes from microgametocytes; in the case of human... Read More

Red algae

Red Algae Definition The red algae belong to the phylum Rhodophyta, which literally was derived from the Greek word... Read More

Deoxyribonucleic acid

Deoxyribonucleic Acid (DNA) Definition A nucleic acid refers to any of the group of complex compounds made up of linear... Read More

Sulcus

Definition noun, plural: sulci (biology) A furrow or groove Supplement The term is widely used in medicine, zoology, and... Read More

Lysosome

Lysosome Definition noun plural: lysosomes ly·so·some, ˈlaɪsəˌsoʊm (cell biology) Organelle containing a large... Read More

Meiosis

What is Meiosis? A simple definition of meiosis would be is this: meiosis is the process of cell division that results in... Read More

Ribosome

A biological cell is composed of many components called organelles. These organelles serve their specific purposes to make... Read More

Cilium

Definition noun, plural: cilia (biology) Microscopic, hair-like projection on the surfaces of some cells and of certain... Read More

Amastigote

Definition noun, plural: amastigotes (protistology) A cell (or the unicellular organism) that does not have flagella (or... Read More

Golgi apparatus

Definition noun Gol·gi ap·pa·rat·us, ˈgɔl dʒi ˌæpəˈreɪtəs (cell biology) An organelle that is comprised of... Read More

Zoospore

Definition noun, plural: zoospores An asexual spore with a flagellum used for locomotion but lacking a true cell... Read More

Organelle

The cell is regarded as the structural, functional, and biological unit of all organisms. It is a membrane-bound structure... Read More

Undulating membrane

Definition noun A sinuous extension of the cytoplasmic membrane performing a vigorous, wavelike, and reversible... Read More

Endoplasmic reticulum

Definition noun plural: endoplasmic reticula (cell biology) A membrane-bound organelle that occurs as labyrinthine,... Read More

Nexin

Definition noun The protein in the interdoublet link that connects the adjacent microtubule doublets of the ciliary... 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

Eubacteria

Eubacteria are prokaryotic microorganisms consisting of a single cell lacking a nucleus and containing DNA is a single... Read More

Human Reproduction

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