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Surfactant Agents I. Definitions a. Surfactant: A surface-active agent that lowers surface tension i. Examples 1. soap 2. detergent b. Surface Tension: Force caused by attraction between like molecules that occurs at liquid-gas interfaces and that holds the liquid surface intact i. Units of Measure: dynes/centimeter (dyn/cm) 1. the force required to cause a 1 cm rupture in the surface film ii. a droplet forms because a liquid’s molecules are more attracted to each other than the surrounding…

In times of adversity, people feel the urge to take matters into their own hands so that they may feel in control. This is especially true when the situation is about their own physical and mental health. Instead of going out of their way to obtain treatment for their problems, people want to be able to resolve a situation in a way that is hasty and can be in their complete control. There is a sense of comfort in knowing that one has power over their struggles when they are the ones making…

The human microbiome project The Human microbiome project was the first step into research about bacteria that is present in the human body, and the association with disease. The project was launched in 2007 and was set out to be a five year program. It was funded by the United States National Institute of Health (NIH) however it involved many specialist from many countries worldwide, the original funding was around $115 million. The main purpose of the project was to analyse “how changes in…

self-fertilisation allows for the viability of mutant strains even without mating behaviour and even paralysed worms with an absent nervous system function can be grown in the laboratory, allowing the analysis of strains with mutations such as synaptic vesicle proteins and voltage-gated channels.…

Lens Fiber Differentiation and its effects on certain organelles. This writing exercise analyzes two separate but related scientific articles, “The fate of the Golgi Apparatus and the Endoplasmic reticulum During Lens Fiber Cell Differentiation” and “Coincident Loss of Mitochondria and Nuclei During Lens Fiber Cell Differentiation” both which analyze and study Lens Fiber Differentiation. The writing assignment will be based on four sections:(1) Background of the research (2) Methods used…

Abstract Action potentials can be defined as the signals and the pathways sent through the nervous system. They are essential in carrying out various actions that are administered by the brain. This effect of action potentials help us to feel cold, warmth ,use the sensory actions of the eye etc. and the back forth signaling between the brain and the nerve cells helps the brain to carry the right action. Action potentials are housed by neuron structures which are made up of axons and dendrites.…

Cosmetic Use of Botulinum Toxin Type A Introduction Botulinum toxin was first identified as a cause of food poisoning over 100 years ago (Carruthers and Carruthers, 2009). Since then, there has been an identification of seven different serotypes labeled A-G; all produced by different strains of the bacteria Clostridium botulinum (Hurkadle et al., 2012). Botulinum toxin type A (BTX-A) is the main and most well-studied serotype that is used in cosmetic (Hurkadle et al., 2012). The BTX-A can be…

surrounded by fatty and fibrous connective tissue. Similar to other body parts, the female breasts contain a vast network of vessels known as the lymphatics which drain any remaining extracellular fluid found in body tissue. Since there is vein like vesicles present in the female breast, the lymphatic system serves as the primary mechanism of defenses in the immune system. Unlike genetic disorders, cancer cells are pleomorphic because they possess many different types of cancers ranging from…

In Metaphor and Thought, Hugh Petrie and Rebecca Oshlag argue that “metaphor is one of the central ways of leaping the epistemological chasm between old knowledge and radically new knowledge” (Petrie and Oshlag 583). Scientists compare cognitive domains in order to apply widely “idealized cognitive models” to previously unexplained natural phenomena (Kövecses 173). In absorbing “truly new forms of knowledge and understanding,” learners construct, reject, and accept metaphorical comparisons of…

Austin Davis Cell Transport Permeability and Mechanisms Biology 2101-009 Derek Draper 11/24/16 Introduction The smallest functional unit of life is the definition of a cell. Smaller than the cell are the chemical processes that allow the cell to live. While cell have many different functions, the most basic is making proteins which produces energy by the devouring of glucose. The most interesting part of the cell, because of its complexity, would have to be the plasma membrane. Not…