Why do they call it the Arctic Circle? “Arctic” comes from the work “arktikos”, the Greek word for bear. The reason is that Ursa Major, the Great Bear constellation is viewed in the northern sky. The Arctic Circle marks the region above which, for at least 1 day a year, there is all day sunshine […]
Can a penny dropped from a plane kill you?
Can gene expression be reversed?
Can gene expression be reversed? Unlike genetic changes, epigenetic changes are reversible and do not change your DNA sequence, but they can change how your body reads a DNA sequence. Gene expression refers to how often or when proteins are created from the instructions within your genes. Is gene expression inherited? Summary: We are more […]
Is iron the most abundant metal in the human body?
Is iron the most abundant metal in the human body? Iron is the most abundant metal in the human body and mainly works as a cofactor for proteins such as hemoglobin and various enzymes. No independent life forms on earth can survive without iron. Can you get poisoning from gold? In its metallic form, gold […]
What are the 4 types of interstellar gas?
What are the 4 types of interstellar gas? In astronomy, the interstellar medium (ISM) is the matter and radiation that exist in the space between the star systems in a galaxy. This matter includes gas in ionic, atomic, and molecular form, as well as dust and cosmic rays. Is a large cloud of dust? A […]
What causes air masses?
What causes air masses? An air mass forms whenever the atmosphere remains in contact with a large, relatively uniform land or sea surface for a time sufficiently long to acquire the temperature and moisture properties of that surface. The Earth’s major air masses originate in polar or subtropical latitudes. What is the air mass classification […]
What social changes contributed to the rise of Florence Machiavelli wrote a scathing critique of church leadership?
What social changes contributed to the rise of Florence Machiavelli wrote a scathing critique of church leadership? Artists began to explore new subjects and areas including engineering. Machiavelli wrote a scathing critique of Church leadership. Artists began to explore new subjects and areas including engineering contributed to the rise of Florence. This answer has been […]
Does the strong nuclear force exist?
Does the strong nuclear force exist? The strong nuclear force is one of the four fundamental forces in nature; the other three are gravity, electromagnetism and the weak force. As its name implies, the strong force is the strongest force of the four. It is responsible for binding together the fundamental particles of matter to […]
Why does solute dissolve faster in hot water?
Why does solute dissolve faster in hot water? When water is heated, the molecules gain energy and, thus, move faster. As they move faster, they come into contact with the sugar more often, causing it to dissolve faster. What helps stuff dissolve faster? A given quantity of solute dissolves faster when it is ground into […]
What type of enzyme is PFK?
What type of enzyme is PFK? Phosphofructokinase-1 (PFK-1) is a glycolytic enzyme that catalyzes the transfer of a phosphoryl group from ATP to fructose-6-phosphate (F6P) to yield ADP and fructose-1,6-bisphosphate (FBP). What is the purpose of the enzyme Phosphofructokinase? Phosphofructokinase, enzyme that is important in regulating the process of fermentation, by which one molecule of […]