rather than high energy covalent and ionic bonds. One of the most important products of chemistry in living organisms is the phospholipid bilayer. This forms the structure of the plasma membrane that encloses all cells. The plasma membrane regulates the passage of molecules into the cell making it one of the most important organelles. The main property of the phospholipid bilayer is the relationship between the hydrophobic fatty acid chains and the hydrophilic, polar heads of the phospholipids. The
consumed, our bodies converts carbohydrates into sugars in the form of glucose, which is then used as an energy source by cells in the Human body. Carbohydrates make up roughly 1/10 of
out of calcium carbonate, and vinegar is made out of acetic acid, water and other trace chemicals. First, to understand how each material affect the shell, one must comprehend what the material means or is. Calcium carbonate is a white crystalline commonly found in chalk, limestone, marble, and… shells. Now, acetic acid, is acidic. It is a clear colorless sour acidic liquid. Calcium carbonate will not dissolve in water or alcohol. The calcium carbonate will dissolve with effervescence in acetic acid
on humans cannot be over-emphasized as they are known to affect most vital organs in the body. Heavy metals are some of the component that contribute to the contamination of the environment (air, water, soil, plants etc.). These heavy metals for example lead and zinc have been known to cause a lot of health problems ranging from hematological to neurological problems. Lead can be hazardous to the body in trace quantity because it can affect virtually all the organ in the body. It induces both microcytic
delay some types of cell damage. Vitamins occurs naturally in commonly eaten foods. There are different kind of vitamins such as: vitamin A, D, E, and K that are fat soluble vitamins which can be stored in the body for long period of time. Other kind of vitamins such as: vitamin C and B are water soluble vitamins that dissolve in water and not stored by the body. The fat soluble vitamins has more risk in toxicity than
(barium carbonate, BaCO3), both insoluble in water. Barium is a naturally occurring component of minerals that are found in small but widely distributed amounts in the earth's crust, especially in igneous rocks, sandstone, shale, and coal (Kunesh 1978; Miner 1969a).
and have a wide range of shapes ranging from spheres to rods. Bacteria are the most diverse and abundant group of organisms on earth and in favourable conditions bacteria reproduce very rapidly by binary fission, an asexual process whereby a single cell divides into two with identical DNA. Under ideal conditions some bacterial species may divide every 10 to 15 minutes. Within in 24 hours a doubling of the population, at these time intervals, produces billions of bacteria with identical DNA. Most bacteria
measure. Caffeine intake can affect blood glucose level, because of its effect that impairs glucose homeostasis which increases insulin resistance, increase in insulin resistance will lead to cellular failure to respond to normal insulin function. (Lane, 2011).
appropriate water bath and start recording the start time. Allow fermentation to occur until three quarters of the closed end of the tube is filled with CO2. If the reaction is slow, allow the fermentation to take place as long as possible. Once the three quarter mark is reached and is filled with gas, make the level and record the end time while still checking the other fermentation tubes in the water baths and noting their times. Pour the solution out and fill the closed end of the tube with water to the
Factors That Affect Enzyme Activity October 30, 2014 Carson Rea……………..Director Jack Felice……………...Materials Manager Luke Distefano………....Time Manager Joseph Stein…………….Data Manager Introduction: Purpose (Parts 1-5): To describe how enzymes work using molecular models. To experimentally test the enzyme catalase in liver cells with hydrogen peroxide and identify the type of reaction occurring. To determine which types of tissue respond and react with catalase. To discover how the change