Aerobic vs. Anaerobic Processes

Aerobic vs. Anaerobic Processes All living things need a continuous supply of energy to keep their cells functioning normally and to stay healthy. Some organisms, called autotrophs, can produce their own energy using sunlight or other energy sources through processes such as ​photosynthesis. Others, like humans, need to eat food in order to produce energy. However, that is not the type of energy cells use to function. Instead, they use a molecule called adenosine triphosphate (ATP) to keep themselves going. The cells, therefore, must have a way to take the chemical energy stored in food and transform it into the ATP they need to function. The process cells undergo to make this change is called cellular respiration. Two Types of Cellular Processes Cellular respiration can be aerobic (meaning with oxygen) or anaerobic (without oxygen). Which route the cells take to create the ATP depends solely on whether or not there is enough oxygen present to undergo aerobic respiration. If there is not enough oxygen present for aerobic respiration, then some organisms will resort to using anaerobic respiration or other anaerobic processes such as fermentation. Aerobic Respiration In order to maximize the amount of ATP made in the process of cellular respiration, oxygen must be present. As eukaryotic species evolved over time, they became more complex with more organs and body parts. It became necessary for cells to be able to create as much ATP as possible to keep these new adaptations running properly. Early Earths atmosphere had very little oxygen. It wasnt until after autotrophs became abundant and released large amounts of oxygen as a byproduct of photosynthesis that aerobic respiration could evolve. The oxygen allowed each cell to produce many times more ATP than their ancient ancestors that relied on anaerobic respiration. This process happens in the cell organelle called the mitochondria. Anaerobic Processes More primitive are  the processes that many organisms undergo when not enough oxygen is present. The most commonly known anaerobic processes are known as fermentation.  Most anaerobic processes start  out the same way as aerobic respiration, but they stop  partway through the pathway because the oxygen is not available for it to finish the aerobic respiration process, or they join with another molecule that is not oxygen as the final electron acceptor. Fermentation makes many fewer ATP and also releases byproducts of either lactic acid or alcohol, in most cases. Anaerobic processes can happen in the mitochondria or in the cytoplasm of the cell. Lactic acid fermentation is the type of anaerobic process humans undergo if there is a shortage of oxygen. For example, long distance runners experience a buildup of lactic acid in their muscles because they are not taking in enough oxygen to keep up with the demand of energy needed for the exercise. The lactic acid can even cause cramping and soreness in the muscles as time goes on. Alcoholic fermentation does not happen in humans. Yeast is a good example of an organism that undergoes alcoholic fermentation. The same process that goes on in the mitochondria during lactic acid fermentation also happens in alcoholic fermentation. The only difference is that the byproduct of alcoholic fermentation is ethyl alcohol. Alcoholic fermentation is important for the beer industry. Beer makers add yeast which will undergo alcoholic fermentation to add alcohol to the brew. Wine fermentation is also similar and provides the alcohol for the wine. Which is Better? Aerobic respiration is much more efficient at making ATP than anaerobic processes like fermentation. Without oxygen, the Krebs Cycle and the Electron Transport Chain in cellular respiration get backed up and will not work any longer. This forces the cell to undergo the much less efficient fermentation. While aerobic respiration can produce up to 36 ATP, the different types of fermentation  can only have a net gain of 2 ATP. Evolution and Respiration It is thought that the most ancient type of respiration is anaerobic. Since there was little to no oxygen present when the first eukaryotic cells evolved through endosymbiosis, they could only undergo anaerobic respiration or something similar to fermentation. This was not a problem, however, since those first cells were unicellular. Producing only 2 ATP at a time was enough to keep the single cell running. As multicellular eukaryotic organisms began to appear on Earth, the larger and more complex organisms needed to produce more energy. Through natural selection, organisms with more mitochondria that could undergo aerobic respiration survived and reproduced, passing on these favorable adaptations to their offspring. The more ancient versions could no longer keep up with the demand for ATP in the more complex organism and went extinct.

Indicating Possession in Spanish

Indicating Possession in Spanish Many of the structural details of the English language - the parts of speech, punctuation, and even the addition of s or es to make words plural - have correlating structures in Spanish. But one common structure - the addition of an apostrophe followed by an s  - to indicate possession  does not. So if you are going to indicate possession, whether literal or abstract,  in Spanish, here are three ways you can do it: Possessive Determiners Possessive determiners are often classified as a type of adjective, the equivalent of such English words as my and your. Like other Spanish adjectives, they need to match the noun they refer to in number and gender. Here are the possessive determiners of Spanish along with a sample sentence for each: Mi, mis (my, mine): Mi gato es muy peludo. (My cat is very hairy.)Tu, tus (your):  ¡Tus hijas y yo te necesitamos! (Your daughters and I need you!)Su, sus (your, his, her, their, ones): Su casa es su mayor inversià ³n. (Your  house is  your  biggest  investment.)Nuestro, nuestra, nuestros, nuestras (our):  ¿Hay limpieza à ©tnica en nuestro paà ­s? (Is there ethnic cleansing in our country?)Vuestro, vuestra, vuestros, vuestras (your): Me interesarà ­a saber ms sobre vuestro perro.  (I would be interested to know more about your dog. Vuestro and its forms are seldom used in most of Latin America.) Using De If you are using a name or noun to refer to the person or entity that is in possession, the prepositional phrase of de followed by the noun is used, as in el libro de Juan, Johns book. A few examples: Ver el perfil de Pablo. (See Pablos profile.)Él no cree en el movimiento de mujeres. (He doesnt believe in the womens movement.)Es la madre de la estudiante. (She is the students mother.) It similarly is possible to indicate possession by using de followed by a pronoun, such as in de à ©l, but such usage is uncommon except when the use of a determiner would be ambiguous in the context. For example, if su libro (his, her, your or their book) would be ambiguous, we could say el libro de à ©l or el libro de ella (his book or her book). Possessive Pronouns and Long-Form adjectives Less common are the long form of possessive adjectives, which may be used as pronouns. They also may be used as adjectives following the noun. As with the determiners, possessive pronouns and adjectives much the possessed items or persons in number and gender.  These forms are as follows: mà ­o, mà ­a, mà ­os, mà ­as (my, mine).  El coche  mà ­o  consume mucha gasolina. (My  car consumes much gasoline.tuyo, tuya, tuyos, tuyas (your, yours).  La cama roja es tuya.  (The red bed is yours.)suyo, suya, suyos, suyas (my, mine). Las computadoras eran suyas. (The computers were hers.)  nuestro, nuestra, nuestros, nuestras (our, ours). Los perros nuestros son muy diferentes. (Ours are very different.)vuestro, vuestra, vuestros, vuestras (your, yours; this plural familiar form is seldom used in Latin America). El regalo es vuestro. (The gift is yours.) Sample Sentences Showing Possession La casa mà ­a estaba toda quemada. Lo perdà ­ absolutamente todo. (My house was completely burnt. I lost absolutely everything. Mis pensamientos son los que me hacen sentir feliz o desgraciado. (My thoughts are what make me feel happy happy or miserable. Los retos de la vida son parte del viaje. (Lifes challenges are part of the journey.) La esposa del actor rompià ³ el silencio sobre los escndalos. (The actors wife broke her silence about the scandals.) la complejidad del ojo humano es increà ­ble. (The human eyes complexity is unbelievable.) En la creacià ³n de su imagen profesional, su actitud puede contribuir de forma positiva o negativa. (In the creation of your professional image, your attitude can contribute in a positive or negative way.) Su reputacià ³n puede sufrir ataques desde cualquier rincà ³n del mundo. (Ones reputation can come under attack from any corner of the world.)  ¿Cules son las diferencias tuyas con las otras candidatas? (What are your differences from the other candidates?) Ya se han muerto todas las esperanzas mà ­as. (All my hopes have died.) Era la ocasià ³n perfecta para explicar mis creencias. (It was the perfect time for explaining my beliefs.) Durante aquellos primeros aà ±os, la inteligencia de Einstein comenzà ³ a manifestarse. (In those early years, Einsteins intelligence began to show.)

Summaries Essay Example | Topics and Well Written Essays - 1000 words

Summaries - Essay Example There is no safety net that ensures the society is not held hostage by a few individuals, and thus is not a fair system for those who are not able to make ends meet. This system satisfies the wishes and objectives of a few in the society who are able to manipulate their way up the social ladder. Feminists believe that the dismantling of the capitalist’s way of thinking will play a decisive role in liberating the underprivileged from oppression (Christian, 2011). Communism, on the other hand, is a revolutionary movement that creates a freer market, and classless, moneyless and stateless society. It is based upon common ownership of the means of production as principles that aim at establishing a social order. This brings together the social, political and economic ideologies. It is centered on the belief in the power of the people and pooling of resources and labor thereby encouraging collective ownership (Christian, 2011). It is a way of avoiding the exploitations that become prevalent through feudal systems. It brings the rights of the poor to the fore with each individual having a chance to exercise their rights. In this system the will of the people becomes the law. It equates all people while ensuring that everyone benefits from communal resources. Feminists see this as their liberation from the oppressive past as the communists built the foundation of the 1950’s and 1960’s liberation movements (Christian, 2011). Qn2: Karl Marx, communism & alienated labor Karl Marx believed in the need for the end of exploitation that was perpetuated by only a few individuals through the oppression of the rest in the society. He designed the communist way of thinking as a way of fighting the evils of capitalism and as a way of ending the status quo conflict (Christian, 2011). He believed communism was one best way of bringing people together and putting them in a position that would make it highly unlikely for humans to exploit fellow beings. Those wit h the private means of production would lose it to the community making it possible for the community to take over. Equity would prevail after oppression is done away with, which, in turn, would provide abundant opportunities with few limitations or barriers for people to achieve their goals. Each would give according to their abilities and receive according to their needs (Christian, 2011). The alienation of labor brought about by the class system would cease to exist as everyone would have a chance to provide for the communal needs. Workers will not be held captive by their bosses as they would become autonomous and self-realized human beings. Alienation made the workers express their social aspect through a production system that was unfairly owned and this meant that their goals would be directed by the highly privatized production system, and communism sought to break this ideology. Qn 3: Nietzsche and the Eternal Return The concept of the eternal return is based on speculation that the universe has been recurring and will continue to do so in a similar form. This process goes on for an infinite number of times within an infinite space. If time and space are infinite, then the world has had experiences that will be repeated over and over in an infinite proposition. Nietzsche posits that what has happened in the past will come to play again in the future. Thus, the cycle of the future emanates from the past cycles and this is a process that recurs more often

Question set 2 Essay Example | Topics and Well Written Essays - 750 words

Question set 2 - Essay Example The behavior can be further distilled into two forms which are initiating structure also referred to as task behavior and consideration, referred to as relationship behavior. The task behavior makes it easier for the subordinates to accomplish the set goals as well as objectives and relationship behavior makes things easier for the subordinates in the context in which they tend to operate with other members of the organization. The main objective of the leadership style approach is to help in the understanding of how leaders integrate the two broad concepts of behavior in order to influence the group member positively to achieve organizational and personal goals and objectives. Steps to Effectiveness Two key steps that leadership should take in order to be effective are vision and communication. However, in order to be effective leader one should have good followers. Let us assume that I am the follower of an organization like Tesco and according to me the leadership style approach i s the most appropriate. Leadership style refers to process in which leader’s tends to behave towards their followers. In addition the leadership style is a combination of skill, trait and behavior which leaders use in the process of interacting with the followers. In the leadership style approach behavior is an important component as it is consistent with the pattern of behavior which characterizes a leader. To be led by example is important for a follower as the followers tends to observe the behavior of the leader and thus copy it (Lussier & Achua, 2009, p.70). This way, the most correct and appropriate way of leading will be through leadership style approach. Leader Skills Technosoft Russia Ivan Chalkovsky the sales and marketing head at Technosoft Russia had one most important tasks of deciding on the use of appropriate database for the purpose of sales and marketing activities. Although the SMB of Chalkovsky had good support from the database he was worried about potenti al clients who were not passed to the resellers and as a result lead referral system was created and latter replaced by SMSS. The lead referral system faced issues with resolving the task of monitoring and following with the leads. Chalkovsky wanted to make use of telesales in order to follow and generate leads and also make use of â€Å"one-to-many† model of telesales where the TSR had a given territory to generate sales and create long term relationship with its customers. The marketing manager realized that the sale team needed a team leader and thus Peterson was appointed for the same. However it can be seen that the TRA were not satisfied with her as only 5TSRs filled up the form in favor of Peterson. Thus is Peterson would have provided with proper training in managerial skills and how to handle a team the result would have been different. Proper training was missing, support from the management as well as the TSRs team was lacking leading to low popularity of Peterson. Elite, Inc As Benson took over the position of CEO with Elite Inc. she faced many challenges from Jake who was the CFO of Elite Inc. Jake did not have qualify for the position of CEO as the company thought he lacked leadership skills and as a result Benson had to face challenges. The projects given to Jack were never completed on time and also received late night emails from Jake with regards to work which could have been done during the

History of Samurai Essay -- Samurai Japanese Warriors Essays

History of Samurai The Japanese warrior, known as the samurai, has played a significant role in Japan's history and culture throughout the centuries. Their ancestors can be traced back to as far as can be remembered. Some stories have become mysterious legends handed down over the centuries. In this report you will learn who the samurai were, their origins as we know them, how they lived and fought and their evolution to today. It will be clear why the samurai stand out as one of the most famous group of warriors of all times. Looking back in time, the first Japanese battles recorded are in the first few centuries AD. At this time Japanese warriors went across the sea to Korea to help one kingdom battling two rival kingdoms. Four hundred men set out and fought on foot carrying their bows, spears and swords. They were quickly beaten by warriors attacking on horseback. They probably had never seen an attack like that before, with horses being ridden. Even though there were horses in Japan they had not been used for riding or fighting, but to help in carrying and pulling goods. In the next century, however, there is evidence that horses were being ridden and used in warfare by warriors who would later be called samurai (History Channel). The term samurai was first used in the 10th century and means â€Å"those who serve†. In the beginning it stood for men who guarded the capital for the Emperor, some where used as tax collectors. Later the word grew to include any military man who served a powerful landlord, almost like a police force for that time. They would go around the countryside on horseback collecting taxes from the peasants, often this was in the form of rice. This money helped the Emperor pay for his lavish life style. The word, samurai, quickly spread and was respected (and maybe feared a little) for the men it represented. The noblemen depended on the strength of the samurai. Since their power and wealth was directly related to how much land they owned, the noblemen kept small armies of samurai to protect their property from thieves and invaders. Eventually many noble families joined together to form clans that became more powerful than the emperor, who was the traditional head of the Japanese government (How Samurai Work 11). In the 12th century the two most powerful clans were the Minomoto and the Taira. The two came to battle in 1160 w... ... in body and mind, to governing of the Emperors, to the study of the martial arts. Their code of honor and loyalty are traditions that all Japanese respect and try to live up to even today. The self sacrifice of ones own life for a common cause was even seen in World War II when Japanese pilots deliberately crashed their planes into United States ships anchored at Pearl Harbor. This was a devastating attack and can show the horror caused by revenge and their belief in sacrifice and honor. They were even called kamikaze pilots after the famous samurai battle of long ago. The influence of the samurai continues to be seen in Japan today in a positive way with the stories and legends of heroic samurai and the bushido as their guide. Works Cited Gaskin, Carol. and Hawkins, Vince. The Ways of the Samurai. New York: Byron Preiss Visual Publications, 2003 â€Å"History of the Samurai.† http://home.online.no/~p-loeand/samurai/hist-eng.htm â€Å"How Samurai Work.† http://science.howstuffworks.com/samurai.htm The History Channel: The Samurai. Videocassette. A&E Television Networks, 2003. 100 min. Turnbull, Stephen. Samurai, The World of the Warrior. Oxford: Osprey Publishing, 2003

Stupidity Definition Paper

Emily Thompson Mrs. Clem Advanced Composition October 25, 2012 What An Idiot! Of the 14 million people on the planet, not one of them was born stupid. Everyone possesses some level of intelligence at birth. Yet, as some grow older, they transform from great beings of high intellect to creatures that seem to have little to no aptitude. During the years that they grow up, most of these stupid people do not lose knowledge; they gain it. What is the reason for their degeneration into stupidity? Perhaps stupidity is not a lack of intelligence, as many believe. Maybe, it is the refusal to utilize one’s intelligence to the highest possible degree.Unwillingness to learn is unmistakably present in the life of a stupid person. Last week, I was discussing schoolwork with a friend of mine when he said that he recently failed a paper on the usage of commas. I was aghast that a sixteen-year-old student could fall short in the simple arena of comma usage, but this happens every day. My frien d and others like him have sat through countless classes that have taught them how to use commas. However, they cannot determine the correct site of a comma because they have deliberately decided that neither self-improvement nor the acquisition of knowledge is an important objective in their lives.For whatever reason, they have chosen to be ignorant, and thus, they are stupid. In addition, laziness consumes the life of a stupid person. Stupid people will not apply themselves in anything that is not pleasurable. Stupid teenagers sit in their rooms all weekend playing Black Ops because it takes less effort and brainpower to play  a  game  than it does to write an English paper. In the same manner, stupid adults engross their minds in college football all weekend rather than cleaning out their garage. To make matters worse, both stupid adults and  stupid  teenagers complain about their unfinished papers and filthy garages.Furthermore, stupid people do nothing to get themselv es out of their undesirable situations. Unless motivated  to change their surroundings, these stupid people continue to sit in their laziness and incessantly grumble about their unfavorable, yet repairable, conditions. Stupid people constantly refuse to use common sense in their words. When a thought enters the mind of a stupid person, it immediately converts into words. The stupid person does not censor what they say, so they will question obviously true statements and declare completely unintelligent babble.Since they are stupid, they do not contain their senseless questions and statements. If they would only think through their thoughts before transforming them into words, stupid people would appear to be much less stupid. In addition to not using common sense before speaking, stupid people do not use common sense before performing their actions either. Recently at volleyball practice, I was standing still when a fellow player of mine launched a ball at my head. I looked at my teammate and scowled. She obviously did not mean to send the ball at my face. In fact, she did not mean to kick it at anything in particular.However, she also did not consider that if she kicked this ball, it might travel in an undesired direction and injure someone. Stupid people do not consider the effects of their actions. Consequently, they travel through life recklessly while immediately turning their impulsive ideas into actions. Although stupid people can reform themselves into intelligent, productive members of society, these conversions are infrequent. It seems that there is no hope to entirely eradicate the existence of stupid people. However, if we remove all the warning labels, the problem may sort itself out.

Blue Parrotfish Facts

Blue parrotfish are part of class Actinopterygii, which includes ray-finned fish. They can be found in coral reefs in the Western Atlantic Ocean and Caribbean Sea. Their scientific name, Scarus Coeruleus, comes from the Latin words meaning blue fish. They also get their name from their fused teeth that resemble a beak. In fact, they are part of the family Scaridae, which includes 10 genera that all share the same beak-like feature. Fast Facts Scientific Name: Scarus CoeruleusCommon Names: Blue parrotfishOrder: PerciformesBasic Animal Group: FishSize: 11 to 29 inchesWeight: Up to 20 poundsLife Span: Up to 7 yearsDiet: Algae and coralHabitat: Tropical, marine intertidalPopulation: UnknownConservation Status: Least ConcernFun Fact: Parrotfish get their name from their fused teeth that resemble a beak. Description Blue parrotfish are blue with a yellow spot on their heads as juveniles and are solid blue as adults. They are the only species of parrotfish that are solid blue as adults. Their size ranges from 11 to 29 inches, and they can weigh up to 20 pounds. As juveniles grow, their snout bulges outward. Blue parrotfish, as well as all parrotfish, have jaws with fused teeth, giving it a beak-like appearance. They have a second set of teeth in their throats called a pharyngeal apparatus that crushes the hard rock and coral they swallow. Habitat and Distribution The habitat of blue parrotfish includes coral reefs in tropical waters at depths of 10 to 80 feet. They are found across the western Atlantic Ocean and Caribbean Sea, as far north as Maryland, USA, and as far south as northern South America. However, they do not live in the Gulf of Mexico. They are native to Bermuda, the Bahamas, Jamaica, and Haiti, among other locations. Diet and Behavior Up to 80% of a blue parrotfish’s time can be spent looking for food, which consists of dead, algae-coated coral. Eating algae off coral reefs preserves the coral by reducing the amount of algae that could suffocate it. They grind chunks of coral off with their teeth and then break up the coral to get to the algae with their second set of teeth. The undigested coral pieces get deposited as sand in these areas. This is not only important for the environment, as they are responsible for the sandy beach formation in the Caribbean, but it is also important for blue parrotfish as this grinding controls the length of their teeth. Blue parrotfish are daytime creatures and seek shelter during the night. They do so by secreting a mucous that masks their scent, tastes bitter, and makes them harder to find. The mucous has holes on each end to allow water to flow over the fish as it sleeps. Males can also intensify their colors to deter any threats. They move in large groups of 40 individuals, with a male leader and the rest females. The male is very aggressive, chasing intruders as far as 20 feet away from the group. If the male dies, one of the females will undergo a sex change and become an aggressive, brightly colored male. Reproduction and Offspring School of Blue Parrotfish. Jeffrey Rotman / Corbis NX / Getty Images Plus Mating season occurs year round but peaks in the summer months from June to August. Males and females reach sexual maturity between 2 and 4 years. Females are oviparous, meaning they produce eggs that hatch in the water. During this time, they gather into large spawning groups and males and females form pairs. After they mate, the female releases the fertilized eggs into the water column. The eggs sink to the seabed and hatch after 25 hours. After hatching, these larva begin feeding 3 days later. They develop quickly and have to survive on their own from birth. Juveniles feed on turtle grass beds and eat small plants and organisms. Conservation Status Blue parrotfish are designated as Least Concern by the International Union for Conservation of Nature (IUCN). Bermuda has closed fishing of parrotfish for conservation, but they are still fished in other regions of the Caribbean. They are also impacted by human destruction of coral reefs by bleaching or death. Additionally, blue parrotfish are often eaten in some countries, but they can cause fish poisoning that can be deadly. Sources Blue Parrotfish. Dallas World Aquarium, https://dwazoo.com/animal/blue-parrotfish/.Blue Parrotfish. IUCN Red List Of Threatened Species, 2012, https://www.iucnredlist.org/species/190709/17797173#assessment-information.Blue Parrotfish (Scarus Coeruleus). Inaturalist, https://www.inaturalist.org/taxa/112136-Scarus-coeruleus#Distribution_and_habitat.Manswell, Kadesha. Scarus Coeruleus. The Department Of Life Sciences, 2016, pp. 1-3, https://sta.uwi.edu/fst/lifesciences/sites/default/files/lifesciences/documents/ogatt/Scarus_coeruleus%20-%20Blue%20Parrotfish.pdf.