What are the two types of bone cells and what does each do? Cell Types in Bones The osteoblast, the bone cell responsible for forming new bone, is found in the growing portions of bone, including the periosteum and endosteum. Osteoblasts, which do not divide, synthesize and secrete the collagen matrix and calcium salts. What […]

What type of intermolecular forces are involved in maintaining protein secondary structure? Hydrogen bonds between sections of the protein chain are responsible for the secondary structure of the protein. Which of the following maintains the 3 dimensional structure of a protein? Hydrogen bonds in a protein molecule. Large numbers of hydrogen bonds form between adjacent […]

Which of the following happens when water evaporates? Water at the Earth’s surface evaporates into water vapor which rises up into the sky to become part of a cloud which will float off with the winds, eventually releasing water back to Earth as precipitation. What happens to the temperature of water as it evaporates? Since […]

Does BeF2 violate the octet rule? In AlBr3 , Al octet is not completed that Al has only 6 electrons. In BeF2, Be octet is not completed that Be has only 4 electrons. Which atoms can exceed the octet rule? Sulfur, phosphorus, silicon, and chlorine are common examples of elements that form an expanded octet. […]

What happens when the concentration of a product is reduced in a chemical reaction that was in equilibrium? Decreasing a concentration The position of equilibrium moves to the left. This is essentially what happens if one of the products is removed as soon as it is formed. If, for example, C is removed in this […]

What is often an outcome of selective breeding? Selective breeding can result in better quality products and higher yields in plants and animals that have been bred for specific characteristics. Many domestic animals and plants are the result of centuries of selective breeding. How does selective breeding affect biodiversity? Because of selective breeding , future […]

How do you determine if products or reactants are favored? The answer that they are looking for is either K tells you that the products are favored or the reactants are favored. If the products are favored then K will be a number larger than 1….Chem – Reactants or Products Favored. K = 0.4 Reactants […]

How do you measure environmental impact? The calculation of carbon footprint is the standard way of measuring and reporting the environmental impact that a building, land, a structure, or a retail location has on the environment. How does human activities impact the environment? Humans impact the physical environment in many ways: overpopulation, pollution, burning fossil […]

How do you interpret the prefix Milli? For example, the prefix “milli” means “one thousandth of”. So a millimetre is one thousandth of a metre. Put another way, there are one thousand millimetres in a metre. What is the prefix for the multiplier 1/10 15? smaller prefix name symbol multiplier micro- µ × 10-6 nano- […]

Why are most cells so small why arent cells larger? The important point is that the surface area to the volume ratio gets smaller as the cell gets larger. Thus, if the cell grows beyond a certain limit, not enough material will be able to cross the membrane fast enough to accommodate the increased cellular […]