Science


Refine Search

What are the advantages of using 12 volt electrical systems?

With a 12V electrical system installed, starting the vehicle becomes easier as the system offers greater cranking power, according to Restore an Old Car. Since the 12V system offers higher cranking power, it has the capacity to provide the additional compression required to start a vehicle even in the situation where the engine is hot.\nAdditionally, using newer power accessories such as horns, better batteries, CB and aftermarket radios and amplifier is possible only if a 12V electrical system is installed in the vehicle. Special lighting such as halogen headlights and LED tail lights work o..

Which continent has the largest landmass?

Asia is the largest continent, in regards to area, by more than 5 million square miles. The continent is vast and it is located in both the Eastern and Northern Hemispheres. There are currently no boundaries that separate Asia from Europe. The boundaries for the two continents are determined culturally with no obvious geographical separation.

What is the scientific definition of time?

Other definitions or descriptions of time include the "arrow of time" in which individuals remember the past but not the future, as well as Einstein's theory of relativity, which measures time as a function of the speed of light. Time has also been described as a subjective measurement that is also a social construction, which means that individuals do not sense time passing unless they measure it using an external device.

How hot is the surface of the sun?

Nuclear fission occurs in the sun's core, where the compression of hydrogen atoms produces helium. Large amounts of energy are created during this process, which radiates outwards towards the surface and beyond.The sun's heat generates from the solar surface outwards towards a section of the solar atmosphere called the corona. The temperature in the corona can reach as high as 3.5 million degrees Fahrenheit. The corona is the topmost layer of the solar atmosphere, which is visible as a halo during a total solar eclipse.

What does "GLC" stand for in chemistry?

During the process, the components of a sample are dissolved in a suitable solvent and then vaporized in order to separate the analytes. The separation is achieved by distributing the sample between the stationary and the mobile phases. The mobile phase is an inert gas that serves to carry the molecules of the analyte through the heated column. The stationary phase is a microscopic layer of liquid on an inert solid support.

What is a quaternary structure?

Keratins are fibrous proteins that are held together by coiled amino acid chains. Keratins are contained in hair, skin, wool, fur, wool, nails, beaks and feathers. They are also found in muscle tissue and are needed for blood to clot. Globular proteins consist of clusters of different types of structures that form round bundles. Globular proteins are present in insulin, most enzymes and hemoglobin, a substance found in red blood cells.

What would happen without mitochondria?

Mitochondria convert oxygen and nutrients into a form of energy called adenosine triphosphate, or ATP. Cells need ATP to perform all of their metabolic functions. Researchers from The Florida State University say cells are able to produce approximately 15 times more energy with mitochondria than they would without it.\nIf cells did not have any mitochondria, they would have to use anaerobic glycolysis to produce ATP, according to the fourth edition of "Molecular Biology of the Cell." This process converts glucose into a substance called pyruvate, but it is less efficient than aerobic respirati..

What are the names of the five fingers of the hand?

Most people have five fingers on each hand and five toes on each foot. Some people, however, are born with more or fewer digits on each hand or foot. Polydactyly is a condition where people are born with one or more extra toes or fingers, while ectrodactyly is a condition where people have fewer than five digits. A finger can be divided into three main sections: the proximal, middle and distal phalanx. These are the sections of the finger between each joint.

Who was the father of zoology?

Zoology, originally primarily concerned with discovering and documenting new species, was subdivided between vertebrate and invertebrate zoology. Further subdivision occurred because invertebrates comprise 97 percent of animals.\nZoology in the 21st century is more concerned with studying the environmental factors impacting the survival of animals. This branch of zoology is called comparative animal physiology, since it studies how animals obtain energy, cope with changing temperatures and any other problems associated with species survival.

What are the three stages of cell signaling?

The cells of the human body are also receiving signals from other cells in the body. These signals are important to keep cells alive and well to ensure that events such as cell division and differentiation occur. The signals are mostly chemicals found in the extracellular fluids around the cells, also called ligand. These fluids can come from distant locations in the body or from nearby cells and can even come from the same cell.\nIn the reception stage, membrane receptors bind with a signal molecule or ligand, causing the production of a second signal, which causes a cellular response. These ..

Showing 2821 to 2830 of 10000 (1000 Pages)