25 results found

Search Results for: swim

Flagellum

Flagellum Definition Flagellum is a slender, hair-like structure composed of a complex arrangement of multiple proteins,... Read More

Plankton

Plankton is a diverse group of typically microscopic, aquatic organisms suspended in the water column and rely on water... Read More

Aves

Aves Definition What are birds classified as? Birds constitute the class Aves of the kingdom Animalia. How to define Aves?... Read More

Siphonophore

Definition noun, plural: siphonophores Any of the various marine invertebrate of the order Siphonohorae of the class... Read More

Protist

Protist Definition What is a protist? All protists are eukaryotes, i.e. organisms with a nucleus. However, they are... Read More

Kingdom Animalia

Kingdom Animalia Definition Each person can say that they know of or can name at least one animal. However, do people know... Read More

Chromosomes X and Y and Sex Determination

Reviewed by: Mary Anne Clark, Ph.D. In humans, the normal chromosome complement is 46, consisting of 22 pairs of... Read More

Human Reproduction and Fertilization

For the human species to continue surviving, it is essential that mature adults are capable of producing fertile offspring... Read More

Animal Water Regulation

Homeostatic control, a set environment, and how evolution and natural selection drives a species to adapt to its environment... Read More

Coccidia

Coccidia (singular: coccidium) are sporozoans that live as parasites of the digestive tracts of certain animals. The... Read More

Thalassophobia

Among many psychological and psychiatric disorders, one is the fear of the ocean and the fear of deep water, which in... Read More

Cilium

Cilia Definition Cilia are hair-like structures found on the surface of many types of cells, including some mammalian... Read More

Physical characteristics of Sharks

Physical Characteristics of Sharks Sharks (superorder Selachimorpha) are a type of fish with a full cartilaginous... Read More

Convergent evolution

Convergent evolution definition What is convergent evolution? Convergent evolution is a concept in evolutionary biology... Read More

Sporophyte

Sporophyte Definition What is a sporophyte? Accordingly, the sporophyte is the plant generation that produces spores. To... Read More

Ejaculation

Definition noun (biology) The act of ejecting or expulsion, as of the expulsion of semen from the male genital tract in... Read More

Semen

Definition noun The slimy whitish fluid comprised of sperm cells and secretions from the sexual glands released at orgasm... 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

Infusoria

Infusoria (Science: zoology) One of the classes of protozoa, including a large number of species, all of minute size. They... Read More

Frog

Frog 1. (Science: zoology) An amphibious animal of the genus rana and related genera, of many species. Frogs swim rapidly,... Read More

Gene

A gene is the fundamental, physical, and functional unit of heredity. The genes make up the sequences of DNA (genotypes).... 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

Embryology

Embryology Definition Embryology is a branch of biology that deals with the topics concerning gamete formation... Read More

Bladder

Definition noun, plural: bladders (1) (anatomy) A distensible membranous sac or organ that can hold liquid or gas (2)... Read More

Mitochondrial DNA not just from moms but also from dads?

If one wants to trace down lineage, that person could turn to the cell's powerhouse, the mitochondrion. This organelle... Read More