What is a food chain in an ecosystem? A food chain describes how energy and nutrients move through an ecosystem. In the food chain, energy is transferred from one living organism through another in the form of food. There are primary producers, primary consumers, secondary consumers and decomposers- all part of the food chain. How […]
What is the coating on the inside of a light bulb?
What is the coating on the inside of a light bulb? The white powder coating inside the glass tubing of a CFL contains a fluorescent coating. When electricity enters a CFL, mercury and argon fumes inside the bulb produce invisible ultraviolet (UV) light. This UV light reacts with the fluorescent coating to produce the white, […]
What two things started Earth?
What two things started Earth? When the solar system settled into its current layout about 4.5 billion years ago, Earth formed when gravity pulled swirling gas and dust in to become the third planet from the Sun. Like its fellow terrestrial planets, Earth has a central core, a rocky mantle and a solid crust. Why […]
How many coordinate systems are there?
How many coordinate systems are there? In this article we mainly discuss two types of coordinate systems. What is the difference between phi and theta? Theta is the same as the angle used in polar coordinates. Phi is the angle between the z-axis and the line connecting the origin and the point. How do you […]
What enzymes do lysosomes contain?
What enzymes do lysosomes contain? Lysosomes are membrane-bound vesicles that contain digestive enzymes, such as glycosidases, proteases and sulfatases. Lysosomal enzymes are synthesized in the endoplasmic reticulum (ER), are transported to the Golgi apparatus, and are tagged for lysosomes by the addition of mannose-6-phosphate label. What organelle is responsible for respiration? The “powerhouses” of the […]
Is K or Br bigger?
Where in your body do mechanical and chemical digestion occur?
Where in your body do mechanical and chemical digestion occur? Digestion is a process that converts nutrients in ingested food into forms that can be absorbed by the gastrointestinal tract. Proper digestion requires both mechanical and chemical digestion and occurs in the oral cavity, stomach, and small intestine. What mechanical and chemical digestion occurs in […]
How far did Amelia Earhart fly?
How far did Amelia Earhart fly? 2,000 miles Who piloted the first non-stop flight across the Atlantic? The First Nonstop Flight Across the Atlantic Lasted 16 Harrowing Hours. John Alcock and Arthur Whitten Brown flew across the Atlantic with the help of a sextant, whisky and coffee in 1919—eight years before Charles Lindbergh’s flight. Who […]
What happen when you perform a cardiovascular activity?
What happen when you perform a cardiovascular activity? Cardiovascular exercise is any vigorous activity that increases heart rate and respiration and raises oxygen and blood flow throughout the body while using large muscle groups of the body repetitively and rhythmically. What is the relationship between physical activity and cardiovascular fitness? What is the connection between […]
Why force is directly proportional to pressure?
Why force is directly proportional to pressure? From equation (1) it is evident that as force increases, pressure also increases and as force decreases pressure also decreases since force is in the numerator. Or pressure is directly proportional to the applied force. Whereas as the area increases, the pressure decreases. i.e. it increases with the […]