Diffusion in agar cubes Introduction: All cells are dependent on a processes called diffusion‚ which is the movement of a substance from an area of higher concentration to an area of lower concentration. Cells need to obtain certain essential substances‚ like oxygen‚ for their survival. The rate of diffusion is said to be dependent upon the various factors: Size of molecules that have to diffuse‚ concentration gradient‚ the distance across which diffusion occurs‚ number of pores/openings‚ surface
Free Molecular diffusion Diffusion
Summary of Various Art Mediums If you’re like me‚ you like to have your hand in as many “pots” as possible. As I learn more and more about scrapbooking and different art forms‚ I’m discovering the vast world of art mediums. I never knew how much could be done within the realm of paper arts. In this article‚ I’ll give you the run-down of a few of the heavy hitters in the art mediums world and tell you a little about how each is used. Hopefully this will allow you to break away from your normal
Premium Art
Slavery as a Necessary Evil It is inevitable that with the mention of slavery emotions will be aroused within whoever is present. Today most people look at slavery as one of the biggest mistakes our country has ever made. However‚ some will say they can see positives within the topic. It is the obvious nature and cycle of life that everything is not perfect and mistakes must be made to learn valuable lessons. Appalled by any notion of slavery as being necessary‚ most people do not see the evidence
Premium Slavery Slavery in the United States American Civil War
The Effect of Common Bactericidal Agents on Staphylococcus Epidermidis Introduction Staphylococcus epidermidis is a facultative anaerobic bacterium. It is part of the normal human flora and is found on the skin. Colonies of these bacteria can produce a protective slime called a hydrophobic biofilm. Staphylococcus epidermidis is usually not pathogenic unless it enters the human body. One of the most common places for infections are hospitals where people often have weakened immune systems‚ open
Premium Bacteria Chlorine Oxygen
Gun Control and Why it is Necessary What does it take to maintain a proper and orderly society? This question is not easily answered. There are numerous statements that can answer that question. One answer that some people may use is “Gun Control: Securing the use‚ sale and purchase of firearms in a society so that the murder and violence rates decrease.” There are different extremes of the gun control issue. There are those who say that ALL firearms should be registered by ALL owners or that
Free Firearm Gun politics Concealed carry in the United States
demographics‚ why is it necessary to have immigration into our country? What consequences would there be for your generation if our government gets this wrong?” Immigration is key for Canada. We have become an popular option from immigrants from all around the world. We are capable of giving them great opportunities‚ and a better life. In 2011‚ foreign born immigrants represented approximately 20.6% of Canada’s total population. Without immigrants; Canada will lose its potential. Why immigration is
Premium Population Canada Refugee
We all want quality things in life. Whether it’s for basic things like food or supplementary materials like entertainment. So why not quality education. Especially for preschool children for the reason that they learn and develop the most during this stage. There are many ways quality education in early childhood can be provided. Teachers are the key person particularly trained and qualified teachers. They have more knowledge on the development stages of a child and are able to plan a curriculum
Premium Education Higher education Early childhood education
With the excess of defects that can be caught so early‚ the ability to determine a course of action sooner‚ and for the safety of the mother and fetus‚ genetic testing in the first trimester is a necessary tool to be utilized in family planning. The age old argument of making medical decisions based off of something so emotional is one that will not ever be eradicated. Dr. Gwen Latendresse (2015) says of her case study‚ “Although it is true that many genetic conditions cannot currently be cured
Premium Pregnancy Genetics Abortion
CHAPTER 23 Pure Competition A. Short-Answer‚ Essays‚ and Problems 1. How does pure competition differ from other basic market models? 2. What are some examples of the four different market structures? 3. What are four characteristics of pure competition? 4. How would you describe the demand curve for the purely competitive firm? For the industry? 5. What is the difference between average‚ total‚ and marginal revenue? What is the
Premium Costs Variable cost Supply and demand
over 200 illnesses in common? Today I am going to be talking about why I agree that animal testing is necessary. Dr. Daniel H. Johnson‚ Jr.‚ former president of the American Medical Association stated "Animal research - followed by human clinical study - is absolutely necessary to find the causes and cures for so many deadly threats from AIDS to cancer." I will give reasons in this speech why I think animal testing is necessary. The first reason I will discuss is to understand how our bodies work
Premium Science The Animals Animal