Search Results for: compartments
Body fluid
Body Fluids Definition What is body fluid? Literally, body fluid is the fluid of the body. The adult human body is ~50-60%... 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
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
Human Reproduction
Terminology and Concepts Primary reproductive organs are called gonads - testes in the male and ovaries in the female.... Read More
Golgi apparatus
Golgi Apparatus Definition The Golgi apparatus is a membrane-bound organelle in eukaryotic cells. It plays a crucial role... 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
Mitochondrion
Mitochondrion Definition What are mitochondria? The term “mitochondrion” comes from the two words of the Greek... Read More
Alimentary canal
Definition of Alimentary canal What is the alimentary canal? The alimentary canal is a muscular hollow continuous tubular... 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
Pinocytosis
Pinocytosis Definition What is pinocytosis? Pinocytosis is the ingestion of extracellular fluids, i.e. the fluid... Read More
Chlorosome
Chlorosome is a photosynthetic micro-compartment that serves as a light-harvesting complex in sulfur bacteria and other... Read More
Plant Metabolism
Introduction Plants are responsible for incredible feats of molecular transformation. The processes are always being... Read More
Tight junction
What are tight junctions? Tight junctions are the intercellular barrier between two neighboring endothelial and epithelial... 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
Diffusion equilibrium
Definition noun The state in which the concentrations of the diffusing substance in the two compartments are the same or... Read More
Muscular system
Muscular System Definition What is the muscular system? The muscular system is a system that includes muscle cells and... 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
Cell division
Cell division is a biological process by which a parent cell duplicates its cell contents and divides to give rise to two or... 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
Rough endoplasmic reticulum
Rough Endoplasmic Reticulum Definition The rough endoplasmic reticulum (rough ER or rER) is a membrane-bound organelle... Read More
Protoplasm
Protoplasm Definition The protoplasm is regarded as "the living material or the living content of a cell". It is fluid... 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
Cyanobacteria
Cyanobacteria Definition Cyanobacteria is a group of photosynthetic bacteria widely distributed in various aquatic habitats... 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
Metamerism
Metamerism Definition Metamerism is the repetition of homologous body segments. This type of development can be seen in the... Read More
Fluid mosaic model
Fluid Mosaic Model Definition What is the fluid mosaic model? The fluid mosaic model is a three-dimensional representation... Read More
Generation of resting membrane potential
Stephen H. Wright Department of Physiology, College of Medicine, University of Arizona, Tucson, Arizona 85724... Read More
Hyperosmotic
Hyperosmotic Definition What is hyperosmotic? The word hyperosmotic is derived from two Greek words: 'hyper', meaning... Read More
Sarcolemma
Sarcolemma Definition What is the sarcolemma? It is the thin, transparent, extensible plasma membrane of the muscle cell.... Read More