Protein Essays

Herbicide Resistance

Superweeds threaten to negatively impact U.S. soybean, cotton and corn production. These crops were previously controlled effectively by the herbicide glyphosate (Round up). Glyphosate works by stopping the enzyme EPSP synthase by gumming up the enzyme. This renders the EPSP incapable of production. If EPSP synthase is not present, plants stop producing necessary proteins. Without these proteins, the plants wither, turn yellow, and die within a few days (“Glyphosate-resistant ‘superweeds’ may be Less Susceptible to Diseases,” 2012). Glyphosate (Round Up)…

Read >>

Understanding Enzymes and the Factors That Affect Them

Abstract The researcher conducted this experiment in order to investigate how various factors effected enzymes. Those factors were the concentration of the enzyme, the temperature it had to work in, and the pH level of the solutions as well. All three were hypothesized to speed up the rate at which the enzyme acted. A series of several tests were carried out to find the answer to each problem. First, the scientist witnessed the enzyme diastase work in a natural environment,…

Read >>

Circular Dichroism and Secondary Structure of Proteins

Proteins are vital to an organism life; they are involved in nearly all cellular functions. It is an essential part of enzymes, the cellular membrane, active transport, protein synthesis and wound healing. Because one relies so heavily upon proteins and its function the structure of proteins is also very important. “The way a protein will fold over its self-determines how it interacts with other chemicals in its proximity, primarily because of different attractive forces being subjected at specific angles from…

Read >>

Biology Questions and Answers

2.) a) proteins b.) i) Amylase ii) Protease iii) Lipase c) i) Glucose ii) Amino Acids iii) Fatty acids and Glycerol 3.) a.) Each enzyme has a unique shape that fits onto the substrate. As enzymes normally only catalyse one reaction the substrate has to fit in the specific shape (active site) and if it doesn’t fit in (lock and key method) then the enzyme won’t be catalysed. b.) As when the enzyme is denatured it’s special shape is destroyed,…

Read >>

Bradford Protein Case

The appearance of blue color showed the present of protein in the BSA dilutions. The more diluted the solution was, the less blue it was. The R2 value of the standard curve of BSA dilution was obtained to be 0.9972, which is close to 1. The closer to 1 the R2 value was, the more accurate the linear portion was. The error percentage of each unknown was large: 25.9% for skim milk, 95% for soy sauce, and 64.7% for egg…

Read >>

Etanercept

Although it is known that etanercept is a recombinant human soluble tumor necrosis factor-alpha (TNF? ) receptor fusion protein that decreases its role in disorders that involves excess inflammation in animals, mainly in humans, including autoimmune diseases such as ankylosing spondylitis, psoriasis, hepatitis C, rheumatoid and psoriatic arthritis, it obviously shows that the effect of this fusion protein depends on the genes of the patient relative to his or her reaction to this protein. Citing the 60 year old male…

Read >>

Ap Biology Frq

A). The chemical composition and structure of proteins seems quite confusing at first but one it is broken down into levels it is much more understandable. Amino acids are the basic building blocks of proteins and they contain amino, carboxyl and R groups. These R groups that are in the amino acids are what determine the properties of the specific amino acids. For structure, there are 4 levels. The first one being the primary level. These are made up of…

Read >>

Biomolecules Case

1.What are macromolecules? Give examples. Macromolecules are large complex molecules that occur in colloidal state in intercellular fluid. They are formed by the polymerization of low molecular weight micromolecules. Polysaccharides, proteins, and nucleic acids are common examples of macromolecules. 2. Illustrate a glycosidic, peptide and a phospho-diester bond. (a) Glycosidic bond is formed normally between carbon atoms, 1 and 4, of neighbouring monosaccharide units. (b) Peptide bond is a covalent bond that joins the two amino acids by – NH…

Read >>

Diffusion and Osmosis

NGSSS: SC.912.L.14.2 Relate structure to function for the components of plant and animal cells. Explain the role of cell membranes as a highly selective barrier (passive and active transport). SC.912.L.14.3 Compare and contrast the general structures of plant and animal cells. Compare and contrast the general structures of prokaryotic and eukaryotic cells. AA Background: (Source: www.explorelearning.com) Diffusion is the process in which there is a net movement of molecules from a high area of concentration to a low area of…

Read >>

Protein Purification

Protein purification is the series of processes to isolate a single type of protein from a complex mixture. This is vital to extract and characterize the protein of interest. However, before doing so, it is important to release the protein from the subcellular organelles. This step is also known as homogenization. This step can be done with the use of blender. As the solution was homogenized, it may undergo saltation or acidation to remove impurities such as calcium anions. Hexane…

Read >>

Protein Synthesis

Although the size of DNA maybe microscopic its purpose is omnipotent and crucial to humanity. Without deoxyribose nucleic acid our genes would cease to exist, and the characteristics of the individual would disappear too. As it wanders in the nucleus DNA is replicated and transmitted to assist other parts of the cell. DNA transfers RNA to proteins which is what makes it part of protein synthesis. Transcription makes mRNA which joins to amino acids and produce proteins in the process…

Read >>

Identification of Food Constituents in Milk

Objective •To compare and analysis the composition of two different types of unknown milk, K1 and K2. •To determine the differences of the fat content in milk samples, K1 and K2. •To compare the reducing sugar in the both samples of milk, K1 and K2. •To compare the protein concentrations in the both samples of milk, K1 and K2. Introduction Milk provides a useful dietary source of calcium, which is vital for the growth and maintenance of bone and tooth….

Read >>