.... by the enzyme Isomerase. The end of the glycolysis process yields two pyruvic acid (3-C) molecules, and a net gain of 2 ATP and two NADH per glucose. Anaerobic Pathways Under anaerobic conditions, the absence of oxygen, pyruvic acid can be routed by the organism into one of three pathways: lactic acid fermentation, alcohol fermentation, or cellular (anaerobic) respiration. Humans cannot ferment alcohol in their own bodies, we lack the genetic information to do so. These biochemical pathways, with their myriad reactions catalyzed by reaction-specific enzymes all under genetic control, are extremely complex. We will only skim the surface at this time and in this course. ....

.... the form of gases, solids or liquids. When fuels combine with oxygen from the air, they release their stored energy as heat. We recognize this process as burning. The individual relies on food for fuel which contains energy©giving substances that our bodies can store until we need this energy to use our muscles. When we do use our muscles within us, we may not always be sure that heat is given off. Our bodies do not burst into flames but the perspiration on our skin is a clue to what is happening. The movement of the windsurfer has a different explanation. The windsurfer is propelled along by a sail which collects mechanical energy from the winds that sweep alon ....

.... of cognitive motor and social/ behavioral deficiencies. Cognitive deficiencies are those that deal with an individual’s thinking and reasoning process. These abilities are seen in the beginning school years, not at birth, but are the subtle characteristics that only through the school environment can be recognized. In a class environment, the deficiencies of a cocaine child are often confused with those of a disruptive child. The underlying truth is: teachers are not able to cope with them on an individual basis and give them more attention. An initial sign that some children demonstrate is a lack of concentration on virtually every task. Excessive disorganization bey ....

.... paper pulp and other organic materials, preparing bromine, (a poisonous element that at room temperature is a dark, reddish-brown), tetraethyl lead, and killing germs in water, particularly in swimming pools and hot tubs. Like every member of the halogen group, chlorine has a tendency to gain one electron and become a chloride ion. Chlorine strongly reacts with metals to form mostly water-soluble chlorides. Chlorine also strongly reacts with nonmetals such as sulfur, phosphorus, and other halogens. If you were to mix hydrogen and chlorine gases and keep them in a cool dark place, the mixture would be stable, but if it were exposed to sunlight, it would cause a strong expl ....

.... The public needs to be aware and understand it is not for inhaling. Some teenagers think inhaling helium at parties is fun. But what they don't know it is also fatel. An aspect of inhaling is a person may lose consciousness due to asphyxia (oxygen deprivation). During the exchange of gases in the normal breathing process, the blood stream absorbs oxygen from air in the lungs, while carbon dioxide passes from the blood to the air. When you hold your breath, the exchange of gases slows, as "stale" air in the lungs is no longer replaced by "fresh" air. Oxygen is actually removed from the blood stream during the exchange of gases. depending on how completely oxygen is re ....

.... the power of plutonium and the devastating properties it possesses. After WWII, Americans started to think about what the atomic bomb could do to the United States and it's people. When ever plutonium was mentioned the first thing that came to people's minds were the bombings of Hiroshima or Nagasaki. No one ever considered the fact that plutonium could be used for more constructive purposes such as: sources of energy or to keep a person's heart beating. We did begin to produce more plutonium but the majority of the substance was used towards our nuclear weapons programs. Along with reactors, sometimes comes a meltdown which can cause harmful effects if it isn't contr ....

.... are knocked out of the atoms. The result is an ionized gas consisting of free negative electrons and positive nuclei. This gas constitutes a plasma. Plasma, in physics, is an electrically conducting medium in which there are roughly equal numbers of positively and negatively charged particles, produced when the atoms in a gas become ionized. It is sometimes referred to as the fourth state of matter, distinct from the solid, liquid, and gaseous states. When energy is continuously applied to a solid, it first melts, then it vaporizes, and finally electrons are removed from some of the neutral gas atoms and molecules to yield a mixture of positively charged ions and nega ....

.... then at any time in human history. In the last decades the problems of atmospheric change have been gravely advanced by pollution resulting from human activities. These environmental changes pose a real threat to the lives of people and wild life.It is vital to all of us that we fully understand the complex relationship between the atmosphere and the earth. The earth is getting warmer. the changes are small, so far, but they are expected to grow and speed up. Within the next 50 to 100 years, the earth will continue to heat up hotter than it has been in the past million years. As oceans warm and glaciers melt, land and cities along coasts may be flooded. Heat and drough ....