Biology Essays

This paper offers a description of the function of the TolC gene in salmonella and how this function may relate to intracellular pathogenesis in this organism. Salmonella enterica is a disease-causing organism in human beings. "Salmonella enterica is a pathogen that causes a variety of diseases in humans, ranging from gastroenteritis to bacteremia and typhoid fever" (p. 1372).

(Budgell, Brian Stephen, 27) When advancing writing in the field of Biomedical Laboratory Science and perhaps in other disciplines, the manner

Invasive plants use allelopathy to auto-complete other native plants in a given area. To distinguish such plants from others is not that easy; it requires conducting experiments in order to determine the allelopathic potential of different plants. It identifies the leaf extract concentration of Alliaria petiolata and woodland plants.

Chadchan and Shankar (2009) noted that the fastest growth in urbanization started in the 20th century, and the trend was mostly notable in the third world countries. Migration from rural to urban areas occurs

The experiment entails comprehending the outcome of the competition in the construction and development of plant communities. This includes a study of plant competition to evaluate varying functional aspects of competitive interactions. This method is used to examine the effects of different resource accessibility.

For instance, humans are classified as follows in the taxonomic categories. (Bernard, & Mark, 1999). In this assignment the nine images in the document table represents the nine animals Phylum. These phylum

cleus; what does not sediment at this speed is then placed in a clean tube and spun at a higher speed to separate out the next-larger particles – in this case, the mitochondria. The particles which have sediments, forms a pellet in the bottom of the tube (or on the lower side

ent in the resulting organism, by duplication of gene that will cause some genes to be duplicated and in turn the resulting organism will have some extra genetic information, by genetic inversion in which genetic order is altered and the new sequence could either bring

The article under consideration deals with a rather relevant issue concerning the origins and the factors preconditioning the level of body dissatisfaction in adolescent boys and girls. This problem has been widely examined and discussed as statistical data have been showing disturbing results recently.

Today, one disease evokes similar fears and imagery; that virus is Ebola. People imagine that Ebola is the next worse thing to a Zombie apocalypse and that it may have the power to bring all of civilization to its knees. Granted Ebola is a serious virus and

The process of DNA replication is semi-conservative. At the beginning of replication, two helical strands of DNA unzip; thus, providing two DNA strands that act as a template for the replication process. The biosynthesis of a new daughter strand occurs through the incorporation of nucleotide bases along the template strand.

This paper tells that bioengineering as manipulation of the genes can be done through pharmaceutical administration in humans beings or introduction of genetic material into the grown human. Other's ways to do bioengineering are at the gametangium or embryonic stage, where scientists can choose the genes and then let them replicate in order to create a child with the chosen characteristics.

The present study focuses on the flavonoids and its association as critical regulators of the development of seeds. According to studies conducted by USDA forest services, the size of a seed is significant since it determines the kind of

According to the research findings, diffusion plays a vital part in biological processes that help keep organisms alive. This is because diffusion is closely related to the concept of selective permeability, a process wherein cell membranes allow some substances in while keeping other substances out.

This technique examines stained tissues. Staining enhances the visibility of the specimen by increasing contrast among the various tissues, cells and organelles under study. This procedure starts with collection

Prostate-specific antigen is created for ejaculation, where it turns to liquid semen in the seminal coagulum thus allowing sperm to flow freely. It is also thought to be influential in breaking up cervical mucus, permitting the entry of sperm into the womb. Prostate-specific antigen exists in small amounts in the serum of people with fit prostates.

G-protein-coupled receptors are a group of plasma membrane receptors such as helix receptors and serpentine receptors. G proteins are the guanine nucleotide joining proteins that function as intermediaries in signal pathways. There are two significant signal activation pathways incorporating the G protein-coupled receptors; the phosphatidylinositol signal course and the Camp signal course (Miller & Newton, 2010 p. 260).

Congress). Leaving clean water policy completely to states does not work since waters do not follow state boundaries. Any forms of pollutants put in one state’s waters do not

The fitness in this context is defined by three different kinds of curve which include; directional selection whereby the traits of a given organism are related to fitness linearly, stabilizing

For easy identification by the medical fraternity, these chemical bases are referred to using the their first letters. The DNA of human being

Quorum sensing provides a strategy for medicine- muck up the communication system of dangerous bacteria such as antibiotic-resistant enterococcus. Quorum sensing initiates the toxin production such as in case of V. cholerae. Scientists

The experiments required the participation of various public and private organizations such as the Department of Energy, Chromosome 21 Consortium, Cold Spring Harbor Laboratory, Stanford Genome Technology Center, Baylor College of Medicine, and

“Cloning is neither a simple nor a guaranteed procedure” (Donald C. Beitz, Departments of Animal Science and Biochemistry, Iowa State University, Ames). Scientists at Roslin Institute cloned a sheep, and thus Dolly was born,

The procedure onsets when both the old strands of the ds DNA unwind in the presence of enzyme DNA helicase. Each of the strands serve as a template where DNA polymerase acts and incorporates the corresponding nucleotide. If the template strand has

PKU normally affects prefrontal brain regions, making them unable to execute their functions. It causes various deficits, which hinder the brain from performing various tasks such as problem-solving activities, differentiating colors, brain development. A disease that has very devastating effects on an individual is bound to change that specific individual's biochemistry.

Eukaryotic cells have a number of membrane-bound components together referred to as the endomembrane system (Starr, Evers & Starr, 2010). The paper tells that the endomembrane consists of the endoplasmic reticulum, nuclear envelope, Golgi apparatus, lysosome, and plasma membrane (Eroschenko & Fiore, 2013).

In England, for example, laboratory findings have indicate that there has been about eight uncategorized new species. Even though information regarding campylobacter has been known for a period of over twenty years, their epidemiology is not

It exists in both organic and inorganic forms in air, soil and water, with the organic form found in fish and shellfish regarded as. It is mainly found in areas subject to mining, smelting and agricultural run-off. Ingestion of arsenic in the development stage of the nervous system results in the neurites’ growth being inhibited.

My study aims at establishing performance of germinating maize seedlings by inducing similar conditions as the ones in saline regions and assessing the effect of hypocotyl and radicle growth under monitored laboratory conditions. The results that will be drawn from

Choking results to a horrifying condition known asphyxia. The condition is caused by severe deficient oxygen supply to the body that results to unconsciousness or even death. A 63 years old man in the United

Myotonic dystrophy is an autosomal dominant gene and is often associated with muscle weakness, impaired intelligence as well as muscle wasting and cataract (Ruiz-Sáez, 24). I agree The pedigree represents Greg’s family history. The

The ability to switch sex is one of the aspects that make the fish unique especially the fact that this can happen to any adult fish. Kawamura & Nakashima (1998 p 126) observe that during hatching, the fish are usually one sex, i. e, all males. The dominant male that becomes larger than all the rest during the adult stage develops into a female.

Between the genome decoding and the appearance of new wonder, medicine is a great distance to reach. Usually, it takes about 10-12 years to test, to create the proper medicaments, and to release them on sale. However, what we have today, is the decoded genome only, and the human body contains about 30 000 different genes.

Parkinsons Disease is one of the examples which the rats were suffering from and showed improvement because of the stem cells. This clearly shows that embryonic stem cells which are considered to be the basic cells of an organism can provide a breakthrough in treatments of different diseases which were previously not curable.

Apart from the strip test, catalase test, coagulase test, oxidase test were also done. The catalase test was found to be positive for both the sponge isolate and the chicken isolate. The coagulase test was done for the isolates and was found to be negative. When the disinfectants were used, the growth of the bacteria was found to be controlled.

The disorder has a strong genetic connection and individuals afflicted with the severe form experience facial malformation ("Micrornas provide new," 2011). There are several pervasive characteristics of autism. Generally, individuals afflicted with this neurological condition have difficulty in social interaction and communication. 

Other technology by which food gets modified, include selective breeding; animal and plant breeding, and soma - clonal variation. Since genetically

Animals camouflaging under water protect themselves from the lurking predators while predators camouflage to hide from their prey. Stingrays camouflage underwater and their bodies match their surroundings. This paper

My interaction with plants and fungi depicts positive results and their relevance in facilitating an individual’s well-being. The organisms bear fruits, seeds, and other products that are of high value to human life. Most people have been using the yields from the organisms as a source of food, fuel, energy, and beverage.

False, because allelic segregation occurs on diploid organisms as the alleles segregate randomly into gametes with only one allele of the gene included in each gamete Starr. As the segregation occurs, independent assortment occurs during meiosis since there are different ways chromosomes are aligned in Metaphase I.

Atkins diet targets low carbohydrate nutritional intake in the diet of an individual, in which the carbohydrate intake is kept at less than 20 grams of carbohydrate per day. Such a diet means that the other macronutrient components of a diet in terms of proteins and fats are at higher levels to compensate for the low levels of carbohydrates.

An ischemic stroke is caused when blood vessels in the brain get clogged thus hindering the normal blood flow. A hemorrhagic stroke is caused by a burst or leakage of the blood vessel. The common symptoms of stroke include

Symptoms include watery and possibly bloody diarrhea, as well as mucus and pus in various amounts. Abnormal abdominal sounds may be heard in the abdominal quadrants upon

These nutrients play various roles in plant growth. Nitrogen aids in grain formation in cereals (Huifeng, Zhenghui and Qiangsheng). Phosphorus helps in nodule formation in legumes such as beans (Pachecoa, Britoa and Straliotto). This experiment analyzes the effect

According to the literature, it is clearly evident that extensive glycosylation of the cells is experienced in breast cancer cells (Hutchinson 2010). This is more pronounced in the cell membrane as well as in the cytoplasm-bound organelles (Aydar et al.2009).In the current study conducted, the fifth and sixth cell lines were used in the practice.

My male fly count 49 wild-type: 12 vestigial: 20 ebony: 7 ebony vestigial My male fly ratio 7:2:3:1 14. The differences in both of the answers may be because of two reasons. The

The article also notes that there are crucial features that any micelle model needs to meet in order to ensure they are integral and stable. This model

The first family member to die of the virus in the region are said to have resided near the tree. On the other hand, the article notes, there is no evidence that animal provides the natural reservoir for the virus (Vogel 1). There are various things that Varmus did to help

The overall growth results from the cellular process of mitosis, which leads to the division and proliferation of living cells. One interesting fact that the author learned was that approximately 70% of normal cells are in the interphase stage of cell division which entails the multiplication of genetic material in readiness for cell division.

In commercial media usage by some laboratories often succeed in meeting all tests within the quality level platform. That is why the quality control for assurance in growth, isolation, and identification for a concise perform effort to test isolates in susceptibility.