Category : Biology

UV radiations and melanin production

UV radiations and melanin production         Humans and chimpanzees had the same ancestor about seven million years ago. The changes occur by the passage of times and each of the species evolved individually the chimpanzees are however less evolved because they lived in their original environment. As our history, can be related so it is observed that commonly chimpanzees have white skin which was covered with hair. So, it can be predicted that human had white skin. The lifestyle of […]

Charles Lyell and Charles Darwin Selections

Charles Lyell (1797–1875), The Progress of Geology …Let us imagine, that [those who explored the antiquities of Egypt in the 19th century], had…a firm belief that the banks of the Nile were never peopled by the human race before [their time], and that their faith in this dogma was as difficult to shake as the opinion of our ancestors, that the earth was never the abode of living beings until the creation of the present continents, and of the species now […]

The Evolution of the theory Evolution

In today’s world Biology plays an important role.  It provides us with means to staying alive as well as the understanding of how we are alive and where we came from.  Our origins have been a question that’s eluded our knowledge since our conception. Many a scientists have embarked on the quest to understand our origin.  Over the centuries it seems as though we are getting closer to the answer.  A description of the process of the theory of Evolution […]

Identification of Unknown Sample 144a and 144b

Introduction The importance of being able to identify bacterial unknowns allows us to determine potential pathogenic microorganisms that can be harmful to humans. The identification of bacterial unknowns provides information to medical professionals to diagnose and properly treat patients with therapeutic strategies such as prescribing antibiotics to kill specific pathogenic microorganisms. Possible methods to identify bacterial unknowns include basic differential staining and biochemical tests. Gram staining allows identification of the morphology and cell wall structure of a bacterial unknown, which […]

Microbiota of the Skin

By:  Jacob Lucht Purpose: The purpose of this experiment was to determine the type or types of bacteria living in each person’s skin by taking a sample from the nose and plating it on a selective, differential media to culture it and then using polymerase chain reactions to amplify the DNA of the bacteria and gel electrophoresis to determine which type of bacteria was present.   Theory: The human body has a large number of bacterial species living on and […]

Cell and Molecular Biology Lab

Summary Report II This report contains information from labs three and four. These labs were the continuation of previous weeks and in process of obtaining the same overall goal. The semester long lab is broken down into important milestones that must be accomplished to move to the next step. The milestones are explained in the next paragraph. The semester long project as previously stated in the prior summary may have been unclear. The purpose of this semester long lab is […]