31 results found

Search Results for: compartments

Movement of Molecules Across Cell Membranes

Diffusion Diffusion is essentially the movement of molecules from a region of higher concentration to a region of lower... Read More

Prokaryote

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

Organelle

An organelle refers to any of the various cellular structures that perform a distinctive function inside a cell. The cell is... Read More

Human Reproduction

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

Compartments

Compartment syndrome (Science: syndrome) a group of symptoms which indicate a nerve, blood vessel or tendon is being... Read More

Plasma membrane

Do all cells have a plasma (or cell) membrane? Yes, all cells have a biological membrane that separates the protoplasm from... Read More

Alimentary canal

Definition of Alimentary canal What is the alimentary canal? The alimentary canal is a muscular hollow continuous tubular... Read More

Quartering

quartering 1. A station. 2. Assignment of quarters for soldiers; quarters. 3. The division of a shield containing different... Read More

Diffusion equilibrium

Definition noun The state in which the concentrations of the diffusing substance in the two compartments are the same or... Read More

Neural Control Mechanisms

Nerve cells called neurons generate electric signals that pass from one end of the cell to another and release chemical... Read More

Hydrogen

Hydrogen is one of the chemical elements found in nature. A chemical element refers to the pure substance of one type of... Read More

Plant Metabolism

Introduction Plants are responsible for incredible feats of molecular transformation. The processes are always being... Read More

Chlorosome

Chlorosome is a photosynthetic micro-compartment that serves as a light-harvesting complex in sulfur bacteria and other... Read More

Nucleoplasm

Definition noun plural: nucleoplasm nu·cle·o·plasm, ˈnjuːklɪəˌplæzəm (cell biology) The protoplasm of the... Read More

Nuclear body

Definition noun plural: nuclear bodies nu·cle·ar bod‧y, ˈnjuː.kli.ər ˈbɒdi Any of the prominent non-membraned,... Read More

Septin

Definition noun plural: septins sep·tin, sĕp′tĭn A protein involved in cytokinesis and also functions in maintaining... Read More

Endomembrane system

Ever wondered how biomolecules are made within the cell and then they are released outside the cell for use by the body?... Read More

Pinocytosis

Pinocytosis Definition What is pinocytosis?  Pinocytosis is the ingestion of extracellular fluids, i.e. the fluid... Read More

Chromatin

Chromatin Definition What is chromatin in a cell? Chromatin is a complex of nucleic acids (e.g. DNA or RNA) and proteins... Read More

Dithecous

Dithecous (Science: botany) Having two thecae, cells, or compartments. Origin: Pref. Di- -... Read More

Hyperosmotic

Hyperosmotic Definition The word Hyperosmotic is derived from two Greek words: 'hyper', meaning “excess” and 'osmos',... Read More

Generation of resting membrane potential

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

Metamerism

Metamerism Definition Metamerism is the repetition of homologous body segments. This type of development can be seen in the... Read More

Digestive system

Definition noun A system of organs in which the major function is to convert food into simpler, absorbable nutriments to... Read More

Carrier protein

Carrier protein is a type of cell membrane protein involved in facilitated diffusion and active transport of substances out... Read More

Cyanobacteria

Cyanobacteria is a phylum comprised of photosynthetic bacteria that live in aquatic habitats and moist soils. Others are... Read More

Procaryote

Definition noun, plural: procaryotes Any of the group of organisms primarily characterized by the lack of true nucleus and... Read More

Obligate parasite

Parasitism is a form of symbiosis that occurs between a parasite and its host. The parasite is the organism that generally... Read More

Cellular

Definition adjective (1) Of, pertaining to, or resembling a cell. (2) Derived from, or consisting of cell(s). (3) Having... Read More

Kelp

The swaying and winding of kelp in the ocean currents has an entrancing, hypnotic quality that would be the envy of the... Read More

Sarcolemma

Sarcolemma Definition What is the sarcolemma? It is the thin, transparent, extensible plasma membrane of the muscle cell.... Read More