Fire-fighting as we know it today has gone through a long history of development and changes since the first recorded firefighting attempts were created in the 2nd Century in Alexandria (A Fire Pro, n.d.). One example of this would be the modern pumper truck, or pumper apparatus. The first self-propelled steam powered fire engine was built in New York in 1841 and began the chain reaction of developments that created the fire apparatuses that people know and love today (Calfee, n.d.). When the internal
can't fight fires with friends. To fight fires you need a brotherhood. The men and women of the fire service across the globe consider each other family, this is one of the grand traditions of the fire department. Firefighters are constantly looking out for one another, thinking about the things they do and how it may affect the other’s lives and safety. Life safety is of the highest priority in the business of fire rescue. To achieve a safety standard there are many tasks that fire personnel are
The fire service is a noble profession with a long distinguished history of life-saving rescues and acts of heroism. However, there is a gloomy side of the fire service that contains ethics or moral violations that undermine the peerless life-saving acts and the public trust. Fire and emergency medical services respond to calls for help, entering private homes and businesses to assess patients or mitigate an emergency. Rarely is there an instance where trust or ethics are ever questioned, and personnel
At 2215 hrs, on November 28, 1942, Fire Alarm Headquarters from Box 1514, situated at Stuart and Carver streets, received an alarm. When the responding apparatus arrived they found a small car fire at the corner of Stuart Street and Broadway. After the fire was extinguished the firefighters were about to return to quarters when their attention was called to smoke emanating from the Cocoanut Grove Nightclub a few doors away. Upon their arrival at the entrance of the Broadway lounge on Broadway they
about how to be a firefighter. Though it's important to learn the facts about becoming a firefighter, it's equally important to understand the general trends of the industry. It will be likely that, during the fire department interview, questions will be asked like, "Where do you see the fire service in five years?" or "What are the two biggest concerns in this career field today?" So, it’s
The Functions of Osmosis Osmosis is the passive transport of water through a selectively permeable membrane, a membrane that allows certain needed particles to pass through it more easily than others. Pores in this type of membrane are large enough for water to pass effortlessly through it. The flow of water during osmosis depends on the concentration of a solute either within a cell membrane or surrounding the membrane. Water naturally flows from a hypertonic solution, an area of high
continue to keep changing in cell’s life time (Reece et al. 2011). This essay is focus on the comparisons of two endomembrane systems, Golgi apparatus and plasma membrane in terms of their structures and functions. Additionally, the consequences to the cell if each of these membranes lost their integrity will be explained. Structure The structure of Golgi apparatus is composed of semi-circular and flattened stacks of membrane-bound disc known as cisternae and these stacks of cisternae divide into three
Organs and Organ Systems to Organelles The human body consists of many different organs and organ systems, which are made up of billions of cells. Inside these cells there are “tiny organsâ€,or organelles. These organelles act in many ways like the organs and systems of the body. To better understand the relationship between them, I am going to compare and contrast their differences and their similarities. The brain is the control center of the human body. It sends and receives messages
A main difference that sets eukaryotic cells apart from prokaryotic cells is that eukaryotic cells contain a highly ordered and complex endomembrane system. It is thought that the endomembrane system evolved very shortly after Eukarya diverged from bacteria and archaea. The endomembrane system is composed of membrane bound organelles and these organelles are formed by lipid bilayers. When the bilayers fold they create separate compartments that do not include the cytosol. This folding is an energetically
Our comparison is between the fuse box of the house and the nucleus. The nucleus of a cell has three parts; nucleus envelope, nucleolus and the nucleus. The nucleolus is inside the nucleus and the nuclear envelope surrounds everything. The nucleolus is filled with jelly like substance, called nucleoplasm. The nucleus is like the “brain” of the cell, and the fuse box is like the ‘brain” of the house. They both have the same thing in common because they both control if we didn’t have a nucleus in the
Missing Graphs BACKGROUND: Let's go back to the 1920s, when diabetes was discovered and the study of glucose began. There was a scientist named Minkowsky, and he wondered what caused diabetes. So, he did something crazy: He took a urine sample from a normal patient and a sample from a diabetic patient, and tasted them! He observed that the sample from the diabetic patient was sweet, so he concluded that diabetes had something to do with high glucose levels (lots of sugar in the blood)
Intracellular transport Science has advanced tremendously in the last decade or so, specially in the field of cellular genetics. Even with such great advancements many scientists find that intracellular transport is a rather complex cellular process that requires parts such as a dynamic cytoskeleton, and molecular motor protein, which are myosin, kinesin, and dynein. In addition, intracellular transport involves the movement and selecting of vesicles and proteins to particular cellular regions.
mitochondria has a double membrane where the internal membrane is folded up and this where the cell respiration takes place. Also mitochondria have own DNA and its own set of ribosomes. (Clamp, 2000, pg. 92) Another important organelle is a Golgi apparatus; it is a collection of membranes and vesicles. The Golgi body is an organelle with a number of functions, including the synthesis of glycoproteins; the secretion of enzymes and hormones; and the
Lysosomes are specialized vesicles, which are located inside eukaryotic cells; they contain digestive enzymes that break down any unknown material that goes within the cell. The actual name “lysosome” means releasing body, the enzymes it produces causes lysis otherwise known as disintegration. These enzymes are mainly used to break down any bacteria that the cell intakes or to break down any part of the cell that is worn out. The enzymes found in the lysosome are so potent, that if they were released
Transport is a very important process for cell cytoplasm to communicate with the external environment. Transport is any process in which the movement of matter or energy occurs from one part of a system to another. The plasma membrane, also known as cell membrane is selectively permeable. It permits some particles to pass through, while also not letting other particles to pass through. If a substance can cross the membrane then the membrane is permeable to that substance, but if a substance is not
Cells The average person’s body contains 37.2 trillion cells (Jones, et al 446-457). Each cell fulfills a specific role within the body to help maintain the overall life and function of an individual. There is a conjoint configuration that can be found throughout most animal cells. Each part of a cell with its specific role is known as an organelle (Mader, Windelspecht 47). The plasma membrane, cytoplasm, nucleus, cytoskeleton, and other organelles are all essential parts of an animal cell (Mader
Cellular membranes are complex mixtures of proteins and lipids. Cell membranes are composed of a phospholipid bilayer, consists of two leaflets of phospholipid molecules and their fatty acid chain form the hydrophobic interior of the membrane bilayer; and proteins that span the bilayer and/or interact with the lipids on either side of the two leaflets. Transmembrane proteins are the type of membrane proteins which span the entire length of the cell membrane. They are embedded between the phospholipids
The cytoskeleton is a highly dynamic intracellular platform constituted by a three-dimensional network of proteins responsible for key cellular roles as structure and shape, cell growth and development, and offering to the cell with "motility" that being the ability of the entire cell to move and for material to be moved within the cell in a regulated fashion (vesicle trafficking)’, (intechopen 2017). The cytoskeleton is made of microtubules, filaments, and fibres - they give the cytoplasm physical
unimaginable heights, and with this advancement, humans have learned the art of warfare. Weapons are the tools of warfare. However there are some weapons which are superior over others. One of those weapons is fire. Being one of the oldest tools in history, there is no set date on when the first controlled fire was ever created, though there is evidence to show that it was first controlled as early as 790,000 B.C. Through the thousands of years since then, the weapons which bare the flame have also evolved
because fires tend to destroy evidence and firefighters while fighting the blaze will move things around and destroy even more evidence. Once an investigation is open for an arson, investigators need to find the source of heat and the material ignited in order to determine if it was a set fire. The two most important question investigators will ask is where and how did the fire start? When a fire has multiple starting points that should raise the level of suspicion and dictate if the fire was purposely