59 results found

Search Results for: pump

Sodium-potassium pump

Definition noun A transmembrane ATPase enzyme located in the plasma membrane of animal cells, and functions by pumping... Read More

Pump

pump An hydraulic machine, variously constructed, for raising or transferring fluids, consisting essentially of a moving... Read More

Jet ejector pump

Jet ejector pump a suction pump in which fluid under high pressure is forced through a nozzle into an abruptly larger tube... Read More

Protein pump

Protein pump - a kind of protein that is capable of pumping out compounds that could pose a threat to the cell. An example... 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

Ion Pump

A vacuum pump that removes gas by ionizing the atoms or molecules and adsorbing them on a metal surface.A protein... Read More

Active transport

Active transport is a type of cellular transport in which substances (e.g. ions, glucose, and amino acids) are transported... Read More

Circulation

Blood Blood is composed of a liquid, plasma, and blood cells such as erythrocytes (red blood cells,) leukocytes (white... 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

Energy coupling

What is Energy Coupling? Work, whether it be physical or biological, requires energy to be expended. In biological... Read More

Transport

In biology, transport refers to the act or the means by which a molecule or ion is moved across the cell membrane or via the... Read More

Depolarization

Depolarization is the removal of polarity by a process or action. It might also be used to describe how such activity leads... Read More

Sarcoplasmic reticulum

Definition noun plural: sarcoplasmic reticula (cell biology) The special type of smooth endoplasmic reticulum found in... Read More

Sucker

sucker 1. One who, or that which, sucks; especially, one of the organs by which certain animals, as the octopus and remora,... Read More

Suckers

sucker 1. One who, or that which, sucks; especially, one of the organs by which certain animals, as the octopus and remora,... Read More

Garden

Garden 1. A piece of ground appropriates to the cultivation of herbs, fruits, flowers, or vegetables. 2. A rich,... Read More

Myocardium

Myocardium Definition What is the myocardium of the heart?  It is the muscular middle layer of the heart that is... Read More

Resting potential

Resting Potential Definition The resting potential of a cell is defined as the difference in electrical potential across... Read More

Fangs

Fang 1. (Science: zoology) The tusk of an animal, by which the prey is seized and held or torn; a long pointed tooth;... Read More

Smooth endoplasmic reticulum

Smooth Endoplasmic Reticulum Definition Smooth endoplasmic reticulum (sER) is (a part of) endoplasmic reticulum that is... Read More

Perfusion

Definition noun, plural: perfusions (physiology) The act of perfusing, such as the pouring over or through of a fluid by way... Read More

Filtration

Filtration Definition What is filtration? Filtration is separating a solid from a fluid through a porous material that... Read More

Book lungs

Book Lungs Definition Lungs are known as the organs that help organisms breathe. When we think of lungs, we think of the... Read More

Siphon

siphon 1. A device, consisting of a pipe or tube bent so as to form two branches or legs of unequal length, by which a... Read More

Hot

Hot 1. Having much sensible heat; exciting the feeling of warmth in a great degree; very warm; opposed to cold, and... Read More

Silent mutation

A mutation is a change in the nucleotide sequence of a gene or a chromosome. When there is only one nucleotide involved, it... Read More

Independent variable

Independent Variable Definition To define an independent variable, let us first understand what a variable is. The word... Read More

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

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

Muscular system

Muscular System Definition What is the muscular system? The muscular system is a system that includes muscle cells and... Read More

Cellular respiration

Cellular Respiration Definition The main function of cellular respiration is to break down glucose to form energy. What is... 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

Light-dependent reaction

Many organisms, such as green plants, convert light energy into chemical energy through the mechanism of photosynthesis. In... Read More

Trabeculae carneae

Definition noun Muscular ridges that crisscross and project from the inner walls of the heart ventricles. Supplement Their... Read More

Single cycle circulation

Definition noun A type of blood circulation in which the system has only one circuit, with the blood being pumped through... Read More

ATP synthase

Definition noun, plural: ATP synthases An enzyme that catalyzes the formation of ATP from the phosphorylation of ADP with... Read More

Generation of resting membrane potential

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

Rhizophora

Definition noun (botany) A genus of the family Rhizophoraceae which includes the true mangroves Supplement Rhizophora is a... Read More

Hemisphere

Hemisphere 1. A half sphere; one half of a sphere or globe, when divided by a plane passing through its center. 2. Half of... Read More

Well

well 1. Good in condition or circumstances; desirable, either in a natural or moral sense; fortunate; convenient;... Read More