Biology Essays

From analyzing the different urine samples containing glucose, albumin, an altered pH, and ketones, many observations were made. Through Benedict’s test, the Biuret test, the pH test and the odour test, many different characteristics were found. Ultimately, the unknown sample was found through these 4 tests. It was notable that …

Purpose and Background: To refresh my powers of observation and encourage the use of the scientific method while taking a walk in the woods. Materials and Equipment: Paper, Colored Pencils, Internet Procedure: I. 1. The wind is slight and coming from a southern direction. It sounds like a buzzing. 2. …

Research Question: To investigate how different temperatures affect the beetroot pigment and finding out the absorbance and transmittance % using a visible spectrophotometer. Background Information: Beetroots contain betalains which are the red pigments present in the cell vacuole. Betalains are soluble in water and they contain nitrogen. Betalains extracted from …

Introduction The most significant part of our world is that all of the world’s fields and areas of knowledge can relate to each other even in the most farfetched ways. By connecting these different faculties together, one can create new fields that can greatly help our world and the human …

Hypothesis Diffusion is the movement of molecules moving from a region of high concentration to a region of low concentration. If a drop of food colouring is dropped in increasing temperatures of water, then it will spread faster throughout the water because an increase in temperature means an increase in …

Robert Hooke(1665): Published first book on cells. Discovered cells when looking at cork under a microscope. Discovered cell structure of plants. Anton von Leewenhoek (1650-1700):Dutch. First observed protists. With a simple lens(x200), he observed unicellular organisms & nuclei. By using his ability to grind lenses, he greatly improved the microscope …

How can the Michaelis Menten constant for the dextrase content of yeast be calculated with simple experiment on hydrolysis of sucrose? Introduction: In anaerobic conditions yeast cells break down sugar molecules into ethanol and produce carbon dioxide. The process is called alcoholic fermentation. The equation of this process is: C6H12O6 …

Introduction: There is often a rule in cooking that says; do not rip off the skin of the beetroot or wash the tail of the beetroot when you cook*1, unless you want to dye the cooking water red. This red pigment that comes out of the beetroot is caused by …

Figure 1 showing cell membrane structure From the graph it is evident that as the temperature increases, the % transmission of light through the solution(distilled water and anthocyanin) decreases.Therefore it can be deducted that temperature is one of the factors that affect the diffusion of anthocyanin because the amount of …

In this study of increasing target temperature of enzyme catalase coated onto paper filter disks reacting through 3% hydrogen peroxide solution in culture tubes, there was an increase in amount of time taken for the enzyme catalase coated filter paper disks to float to the top of the 3% hydrogen …