Search Results for: transport
Active transport
Active transport is a type of cellular transport in which substances (e.g. ions, glucose, and amino acids) are transported... Read More
Passive transport
Passive transport is a type of cellular transport in which substances such as ions and molecules move down their respective... 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
Facilitated diffusion
Facilitated diffusion is the transport of substances across a biological membrane from an area of higher concentration to an... 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
Electron transport chain
Definition noun A group of compounds that pass electron from one to another via redox reactions coupled with the transfer... Read More
Concentration gradient
What is a concentration gradient? A gradient is a measure of how steep a slope is. Thus, a concentration gradient would be... Read More
Endoplasmic reticulum
Endoplasmic Reticulum Definition The endoplasmic reticulum is a membrane-bound organelle in cells of eukaryotic cells... Read More
Cotransport
Cotransport (Science: cell biology, physiology) The linked, simultaneous transport one substance across a membrane, coupled... Read More
Cellular respiration
Cellular Respiration Definition What is cellular respiration in simple terms? Cellular respiration can be defined simply as... Read More
Simple diffusion
Diffusion is essential in the anatomy and physiology of a living thing, especially with regard to homeostasis. It is one of... Read More
Erythrocyte
Erythrocyte Definition Erythrocytes (red blood cells or RBCs) are the myeloid series of specialized cells that play an... Read More
Transportase
transportase --> transport protein (Science: protein) A class of transmembrane protein that allows substances to cross... 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
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
Selectively-permeable membrane
Selectively Permeable Membrane Definition We can define selectively permeable membranes as those that are selectively... Read More
Mitochondrion
Mitochondrion Definition What are mitochondria? The term “mitochondrion” comes from the two words of the Greek... Read More
Absorption
Absorption can be defined as the process of assimilating substances across the intestinal epithelial cells or the tissues... Read More
Cell membrane
Cell Membrane Definition Just like any non-living body possesses a plastic or paper packaging material that keeps the... Read More
Fermentation
Fermentation Definition What is fermentation? Fermentation is the breaking down of sugar molecules into simpler compounds... Read More
Group translocation
Group Translocation Definition Just like your “home” is a private place where you and your comfort are maintained due... Read More
Chemiosmosis
Chemiosmosis Definition What is chemiosmosis? In biology, chemiosmosis refers to the process of moving ions (e.g. protons)... Read More
Facultative anaerobe
Facultative Anaerobe Definition What does facultative anaerobe mean? Facultative organisms are the most adaptable... Read More
Light-dependent reaction
Many organisms, such as green plants, convert light energy into chemical energy through the mechanism of photosynthesis. In... 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
Plant Metabolism
Introduction Plants are responsible for incredible feats of molecular transformation. The processes are always being... Read More
Krebs cycle
Krebs cycle, also known as the citric acid cycle or tricarboxylic acid (TCA) cycle, is a fundamental metabolic pathway that... Read More
Alimentary canal
Definition of Alimentary canal What is the alimentary canal? The alimentary canal is a muscular hollow continuous tubular... Read More
Chlorophyll
Why are most plants green? Have you ever had the same question? Perhaps, you’ve been told that the plants are green... Read More
Anaerobic respiration
Anaerobic Respiration Definition What is anaerobic respiration? Anaerobic (cellular) respiration is a respiratory process... Read More
Biological Cell Introduction
It only takes one biological cell to create an organism. In fact, there are countless species of single-celled organisms,... Read More
Water in Plants
The movement of molecules, specifically water and any solutes, is vital to understand in light of plant processes. This will... Read More
Circulatory system
Circulatory System Definition noun The organ system responsible for the circulation and transport of oxygen, carbon... Read More
Tight junction
What are tight junctions? Tight junctions are the intercellular barrier between two neighboring endothelial and epithelial... Read More
Equilibrium
Equilibrium Definition In Biology Equilibrium refers to the state of balance and stability. In biology, equilibrium is... Read More