Science Essays

To find out the optimum concentration of calcium chloride (CaCl2) needed to be used by cheese manufacturing companies, in order for the milk used to produce the greatest mass of cheese from a given amount of milk to coagulate at its best rate. So that the rennet is at its most active effect therefore achieving […]

As stated in the headline, this will be a plan to investigate the effects of temperature on the enzyme catalase in yeast and liver. But before I go in to detail about the experiment itself, the biology behind the reaction should be discussed. Starting with what will in great part control the reaction, some knowlegde […]

Catalase is a red, crystalline enzyme that consists of a protein complex with haematin groups and catalyses the decomposition of hydrogen peroxide into water and oxygen: 2H2O2 –> 2H2O + O2Hydrogen peroxide is a powerful oxidising substance. It is formed inside cell organelles called the peroxisomes, during the breakdown of purines. Peroxisomes help to oxidise […]

The digestion of starch begins in the mouth, where it is mixed with saliva containing the enzyme salivary amylase, or Ptyalin. Starch, a long chain of repeating glucose subunits, is hydrolyzed first into shorter polysaccharide chains this is used as a continual mechanism to help the removal of good debris from the gingiva but has […]

A ruminant is an herbivore with a multichambered stomach. The example of a ruminant that will be used is cattle. The example of the carnivore that will be used is a dog. The carnivore is a meat eating organism. The dog is a carnivore, and wild members such as wolves are predators. Refer to fig. […]

Enzymes have enormous potential in the commercial world. Since they can catalyse specific reactions at relatively low temperatures, they are more versitale and cheaper than inorganic cataylstys. Enzymes can work out a range of Ph levels and normal atmospheric pressure therefore energy saving. Enzymes are biogradable and therefore cause less environmental pollution.Enzymes are formed from […]

Throughout this project I will be looking at the use of enzymes in industry. I will focus my thoughts onto the medical area and furthermore onto the portable medical devices. This will include looking at biosensors in great detail along with medical test strips. Enzymes are chemical catalysts; this means that they increase the rate […]

For this investigation, we are going to find out how different enzymes (in this case, trypsin) concentration in a solution would affect the rate of which solute (Casein) is broken down. I think enzyme concentration would definitely have an effect on the rate of reaction. My hypothesis is that increasing the concentration of trypsin would […]

To Investigate the effect of hydrogen peroxide concentration on enzyme catalase Indroductlon: Enzymes are proteins. They function as biological catalysts. They lower the energy barrier of a reaction so that the reaction can take place at body temperature. Also, they can speed up Metabolic reactions without being changed or used up. During a reaction, an […]

This study aims to analyze the impact of a specific factor on enzyme activity and explore the function and mechanism of enzymes. Enzymes are proteins that act as biological catalysts, increasing the rate of chemical reactions without being altered themselves. They interact with specific substrate molecules due to their unique shapes, which are determined by […]

Enzymes are protein, they are used to catalyse metabolisms in all organisms. They break down complex molecules and build up complex molecules from simple molecules, these two processes are catabolic reaction and anabolic reaction respectively. Enzymes are needed in these two processes to catalyse releasing and taking up ATP molecules. Different sequence of amino acid […]

Introduction The fundamental components of all living beings are cells. Cells offer structural support, absorb nutrients, and convert energy. They also possess specific functions and genetic material for replication. Furthermore, cells function as metabolic compartments where a variety of chemical reactions occur. There are two categories of cells: eukaryotic and prokaryotic. Both prokaryotic and eukaryotic […]

In this practical, the aim of this experiment was to find out the catalytic power of alkaline phosphate, as well as the rate of reaction and the activation energy of p-nitrophenol phosphate. Enzymes are biological molecules that catalyze a chemical reaction. ‘Enzymes work by lowering the activation energy of a chemical reaction making it easier […]

Introduction According to C. C. Lai et al. (2005), the high cost of feedstock oil is a significant barrier for the commercialization of bio-diesel. However, research conducted by Sulaiman Al-Zuhair (2008) has demonstrated that waste-cooking oil (WCO) could be a viable alternative raw material for biodiesel production. One way to reduce the cost of bio-diesel […]

An investigation to compare the reaction rates between potato and hydrogen peroxide against liver and hydrogen peroxide through loss in mass. Background information: Catalase is an enzyme that is found in all cells. This means that it is an intracellular enzyme. And enzyme is a biological catalyst. A catalyst is some thing that speeds up […]

The popularity of cultivating mammalian cells for valuable product production has increased in biotechnology. Currently, costly and time-consuming enzymatic tests are utilized to measure quantities of different metabolites (lactate and ammonium) and substrates (glucose and glutamine) in cell culture samples. The aim of this study is to compare the enzymatic checks with the HPLC method […]

Introduction A spectrophotometer is an instrument that measures the quantitative amounts of light of different wavelengths absorbed and transmitted by a pigment solution (Mitchell, Reece). The spectrophotometer includes a light bulb, a reflector, and a detector. When a sample is in place and the chamber lid is closed, light from the light bulb passes through […]

Researching Succession in Sand Dunes. Scientific Understanding: Succession refers to the gradual transformation of a community’s composition over time, as a result of the actions of its inhabitants. Primary succession takes place when a community establishes itself on barren terrain that has never experienced vegetation growth. Primary succession can be observed in sand dunes while […]

Abstract Duckweed is a small aquatic plant that is able to grow rapidly, making it the ideal specimen for our experiment. It is hypothesized that altering the amount of light received by duckweed will alter its photosynthetic rate. It is predicted that lower light intensity will lower the rate of growth in duckweed. Two treatment […]

Light Absorption by Photosynthetic Pigments in Silver Beet Abstract The aim of the experiment was to determine the absorption of differing wavelengths of light by individual pigments in the vegetable silver beet. Pigments were extracted from silver beet leaves and separated into chlorophyll a, chlorophyll b, and carotene via chromatographs. Chlorophylls were then separated and […]

The sessile nature of plants means that they must encounter everything the environment has to throw at them. Most of their life is spent on the resource poverty line, having to make do with what little they have available to them. It would therefore be expected that plants would relish an opportunity to saturate themselves […]

Our objective is to assess the quantity, variety, and environmental impacts on various plant species in two coppiced regions within Nower Wood. One of these areas underwent its last cutting three decades ago, whereas the other was more recently cut just seven years ago. The hypothesis proposes that the older coppice will have more plant […]