Carbonate

exposure. It was known that eggshell thinning could be induced following embryonic exposure to the synthetic estrogen ethynylestradiol (EE2) (Holm et. al 2005). The avian eggshell consists mainly of calcium carbonate and the enzyme carbonic anhydrase, which catalyzes the first step of carbonate ion formation. DDT was shown to have estrogenic activity in male birds and embryonic exposure to DDT resulted in malformations of the embryonic oviducts (Holm et. al. 2005). To investigate whether…

There were many tests performed on my unknown, which led me to conclude that the unknown microorganism is Pseudomonas fluorescens. When determining the gram reaction of the unknown, a Gram stain was done. This process differentiates between a Gram-positive and Gram-negative microorganism. This is done in four steps. The microorganism was stained with iodine, crystal violet, alcohol and acetone, and safranin. Iodine was used first as it acts as a mordant. It forms an insoluble complex by binding…

Almost everybody has been told soda is bad for your teeth. To test this, chalk sticks of equal weight were put in six different types of soda. They were then compared to the chalk stick in the water. The results were that the Diet Mt. Dew is worse for teeth. After six days, the chalk still looked the same, but weighed one gram less. The chalk in the Coke was speckled with brown spots. In conclusion, the Diet Mt. Dew is concluded to be the worst soda for teeth, but the chalk didn’t change enough…

PHYSIOLOGICAL DIMENSION IMMUNE/DEFENSE MECHANISMS Age specific variations of growth and development From the Nursing care of infants and Children, specifies different immunizations that are recommended for adolescents. Adolescents that are 11 to 18 years of age should be administered the tetanus, diphtheria, acellular, and pertussis vaccine. The meningococcal vaccine should be administered to adolescents between the ages of 11 to 12 years old, as well get a booster before the age of 16.…

Introduction For the most part, the periodic table groups atoms together which are similar in structure and property. Groups or columns share similar electronic configurations, on which a variety of properties are based1. In the lab, the tested elements include those from Group 1, Group 2, Period 3, Period 4, Period 5, Period 6, and a series of metals (Calcium, Copper, Iron, Magnesium, Tin, Zinc). Group 1 elements have one valence electron and are extremely reactive. Most of the time, compounds…

Introduction: According to Drugs.com, “Ibuprofen is a nonsteroidal anti-inflammatory drug (NSAID). It works by reducing hormones that cause inflammation and pain in the body.” This includes conditions such as headaches, painful menstrual periods, toothaches, back pain, dental pain, migraines, arthritis and any minor injuries. Ibuprofen is also used to treat and reduce fever as well and is typically administered to individuals, both adults and children ages 6 months and older. Ibuprofen has been…

INTRODUCTION Lovastatin is a statin drug that decreases the total cholesterol level in patients diagnosed with hypercholesterolemia. The drug aims to prevent serious cardiovascular diseases such as heart attack due to blockage of arteries. Lovastatin acts as a competitive inhibitor for the HMG-CoA reductase enzyme in catalyzing the conversion of HMG-CoA to mevalonate, (Alberts, 1998). The drug is also hydrolyzes in vivo to active form β-hydroxyl acid, (Katz, 2005) and was recently researched on…

tion Questions Alannah Dodd Period 2 1. Explain the title of the book The Sixth Extinction is a book all about the fact that the earth as we know it has proceeded through 5 “waves” of mass extinctions, and is currently in the middle of yet another wave of mass extinction (the sixth). These “unnatural” occurrences have displayed shocking changes to the variety of species on the globe, hence the title: “The Sixth Extinction, An Unnatural History.” 2. What gave people the idea…

Good day ladies and gentlemen. My name is Crystal. I would like to inform you about some of the threats to our beautiful coral reefs. Imagine that you were doing some deep sea diving and you happen to swim along this beautiful, interesting and colorful wave of wonder made of stony corals and consist of plants, fish, clear waters, and many other creatures. Coral reefs have often been referred to as the rainforests of the ocean and they are one of the greatest wonders of the ocean. Coral reefs…

Its structural function is critical for locomotion, respiration, and protection of internal organs. While metabolic function acts largely as a storehouse for calcium, phosphorus, and carbonate, it can contribute to buffering changes in hydrogen ion concentration. There are two major types of bone: the cortical bone and the trabecular (cancellous bone). The cortical bone composes 80 percent of the skeletal weight. Although its major function…