Arteries and veins transport blood in two distinct circuits: the systemic circuit and the pulmonary circuit. Systemic arteries provide blood rich in oxygen to the body’s tissue. The blood returned to the heart through systemic veins has less oxygen since much of the oxygen carried by the arteries has been delivered to the cells. In … Read more
What Is Evaporation? Evaporation is a natural process and it is similar to boiling, but the liquid form changes into gaseous form when there is an increase in either temperature or pressure or both. When the molecules of liquid collide, they transfer energy to each other based on how they collide with each other. When … Read more
What Is Action Potential (AP)? An action potential (AP) occurs when the membrane potential of a specific cell location rapidly rises and falls. This depolarization then causes adjacent locations to similarly depolarize. Action potentials occur in several types of animal cells referred to as excitable cells, which include neurons, muscle cells, endocrine cells, glomus cells … Read more
Daniell Cell The Daniell cell is a type of electrochemical cell invented in 1836 by John Frederic Daniell, a British chemist and meteorologist and consists of a copper pot filled with a copper (II) sulphate solution, in which is immersed in unglazed earthware container filled with sulphuric acid and a zinc electrode. The Daniell cell … Read more
What A Machine? A machine is a mechanical structure that uses power to apply forces and control movement to perform an intended action. Machine can be simple like a lever or pulley or they can be more complex like computers and sensors that monitor performance and plan movement, often referred to as mechanical system. Machines … Read more
What Is A Series Circuit? A series circuit is a circuit in which resistors are arranged in a chain, so that current has only one path to take. The current is the same through each resistor but voltage is dropped (lost) across each of the resistances. In a series circuit, the sum of the voltages … Read more
What Is Two-Tier Database Architecture? Two-tier architecture is a software architecture in which a presentation layer (application interface) runs on a client (PC, Mobile, Tablet etc) and a data layer or data structure gets stored on a server. Separating these two components represents two-tier architecture rather than single-tier architecture. There is direct communication takes place … Read more
What Is Hydrostatic Pressure? Hydrostatic pressure is the pressure that is exerted by a fluid at equilibrium at a given point within the fluid, due to the force of gravity. Hydrostatic pressure increase in proportion to depth measured from the surface because of the increasing weight of fluid exerting downward force from above. What You … Read more
A filter is a circuit that removes or filter-out a specified range of frequency components. In other words, it separates the signal’s spectrum into frequency components that will be passed and frequency components that will be blocked. Filters can be classified in accordance with the general characteristics of the filter’s frequency response. If a filter … Read more
The terms, dominant and recessive describe the inheritance patterns of certain traits. The terms are useful concepts when it comes to predicting the probability of an individual inheriting certain phenotypes, especially genetic disorders. However, the terms can be confusing when it comes to understanding how a gene specifies a trait. In genetics, dominance can be … Read more