Biology Experiments for Teachers - Enzymes: Catalase

Biology experiments for use by biology teachers in schools. Preparation and materials for the experiment, description, and discussion

Contact Metamorphism

The topic of contact metamorphism is very broad, thus, this report will only focus on the factors which affect the process of contact metamorphism and review the various types of contact metamorphism. The igneous intrusion near Horseshoe Canyon in Idaho will also be considered in this report. The factors involved within the process of contact metamorphism include: the temperature of the igneous intrusion, the water content at the intrusion, the variety of countryrock, and the size of the intrusion. The process of contact metamorphism occurs mainly due to the high temperatures of intrusive igneous bodies which surround local countryrock. The exertion of pressure is a minimal factor in contact metamorphism compared to regionally metamorphosed rocks.

Extra Hard Cutting Tool Materials

Adequate use and applications of cutting tools made out of extra hard materials will result in considerable timing saving, better cutting tool life, high cutting speeds, more accuracy, superior surface finish and can reduce the cost. Learn more about ultra hard cutting materials used in metal working industry.

DNA Paternity Guide: Can Ordinary Cotton Swabs Be Used For DNA Testing?

DNA testing laboratories and home DNA test kits use buccal swabs. For individuals who take their DNA tests in laboratories, the question of whether or not they can use ordinary cotton swabs is not much of a concern. However, there are still individuals who want to do their DNA testing – and its results – discretely, and are therefore opt to use home DNA test kits. Here, the question of whether they can use ordinary cotton swabs must be addressed to.

Forensic DNA Testing

Forensics is defined as the study of evidence found at a crime scene and used in a court of law. Forensic DNA testing refers to DNA testing of evidence to convict or exonerate suspects based on their connection to that evidence. Just as fingerprints revolutionized crime fighting a century ago, forensic DNA testing has radically changed the way criminal evidence is examined.

Zoological Tidbits

The animal world is much more fascinating than most of us know. See how many of these facts about our fellow passengers on planet Earth grab your attention!

Y Chromosome and mtDNA - Linking Lives, Past and Present

One of the major uses of DNA testing is the surname test or the Most Recent Common Ancestor data. Through DNA testing, people can now determine if people of the same surnames are relatives. How is this done?

Pure Essential Oils

Pure essential oils are known as the life force of plants. They are highly volatile, concentrated substances, which are extracted from the different parts of a plant such as flowers, leaves, seed, resin, bark, fruit or fruit rinds, stem and root. Only very little oil is present in most plants. Therefore, tons of plant material is required to extract just a few hundred pounds of oil.

Choosing an Online DNA Testing Service

Unless you've been living in a cave for the last ten years, you're probably aware of the growing role of DNA testing in everyday life. From forensics to relationships to ancestry, DNA testing is changing the way we validate truth. One of the fastest growing areas of DNA testing is in the realm of DNA paternity testing.

Pollution in the Modern World Leads to Modern Problems

In this modern world as scientists produce new technology for the welfare of mankind it only results in new luxuries being produced. This attitude by people towards the environment is changing because they want more and more luxuries and they are destroying the environment for this reason.

Astronomy

The stars have always been a fascinating subject. Perhaps that's one reason why astronomy is so popular these days. In essence, Astronomy isn't just about studying stars, as most people think. It's actually a study of celestial objects, which includes not only stars but also planets, comets and entire galaxies.

The Ammonites-Index Fossils

Ammonites have inspired many stories and myths throughout history. They are beautiful invertebrate fossils that serve scientist in determining the age of rocks.

Genetic Drift and Devolution

Evolutionists suggest that genetic drift, through the mutation process, increases genetic variability. It reverses the decrease of variability in a population’s gene pool, caused by the selective pressure of speciation. Genetic drift is thought to even reverse the increase of entropy, expected in closed systems. However, the problem of this hypothesis is the lack of evidence, namely, that new genes do arise from genetic drift to such an extent that the increase of entropy is reversed.

How You Can Play a Small Part it Reducing Global Warming

It's very important that we all do what we can to reduce the effects of global warming not just in our immediate area, but all over the world as well. By combing our smaller efforts, we can significantly reduce the impact global warming has on our every day lives.

Bread Mold Science Fair Projects Ideas

Bread mold can be a pretty interesting and inexpensive science fair project. The experiments can be easily done and can be finshed in a fairly short time. And above all,. you can develop bread mold science fair projects that allow you to follow all the steps of the scientific method.