Responses Of Australian Ectothermic And Endothermic Organisms To Changes In Ambient Temperature

699 words - 3 pages

Red Kangaroo: Macropus RufusThe Kangaroo is an endotherm. Endotherms generate heat from their body's metabolism. So their internal body temperature is independent of the external temperature. Endotherms eat more food than ectotherms. This higher food intake results in an increased level of metabolism, which is required to produce heat.The Red Kangaroo inhabits inland plains throughout Australia. They prefer open plains where trees and bushes are scarce.The fur on Kangaroos maintains an insulating layer of trapped air that slows down heat exchange with the environment. The thickness of the air layer can be increased in cold conditions by contracting muscles that lift the fur away from the skin.Adaptations to the cold include increased metabolic processes, shivering and sun basking. Metabolic processes generate heat and keep the body warm. Shivering increases muscle activity and produces heat and basking in the sun also keeps the b ...view middle of the document...

Since enzymes have strong temperature preferences, usually around 37&ºC, their efficiency is reduced outside their preferred ranges. Kangaroos have a fairly constant body temperature so that they can use enzymes which are efficient at those certain temperatures. The ability to maintain a constant body temperature also allows for a broader geographical and ecological distribution.King Brown Snake: Pseudechis australisThe King Brown Snake is an ectotherm. Ectotherms cannot maintain constant body temperatures and their temperatures fluctuate with changes in ambient temperature. The activity of ectotherms is greatly affected by these changes in temperatures. The body's temperature is regulated by heat gained from the environment.The King Brown Snake is found in every state of Australia except for Victoria and Tasmania. King Brown Snakes inhabit woodlands, hummock grassland, chenopod scrubland and almost bare gibber or sandy deserts sheltering under timber, rubbish piles, burrows and deep soil cracks. They are not found in rainforestsIn cold conditions King Brown Snakes absorb heat by exposing as much as possible of its body surface to the warmth of the sun. They do this by changing the shape of their body; a flattened body exposes a greater surface area to the sun. Snakes increase the blood flow in vessels close to the skin as they bask in the sun so more heat is absorbed and transported to inner body tissues and organs. Snakes are usually active during the day however if temperatures are too high they become nocturnal and their active period is at night. They also seek shade to prevent overheating.Snakes tend to be sluggish because their hearts are unable to pump sufficient blood to supply the oxygen needed for vigorous activity. Therefore snakes use anaerobic respiration during muscular activity.Snakes lose and gain heat in four ways:Evaporation - Wind increases heat lossConvectionRadiation - Heat gain by solar radiation, reflected solar radiation and Infa-red radiationConduction - Laying on warm groundThese adaptations assist the King Brown Snake in temperature regulation.


Describe the responses of individuals, groups and governments in Australia to the challenge of reconciliation

613 words - 3 pages During the century of nationhood, reconciliation has been an ongoing issue in Australia. Reconciliation means different things to people, but a common understanding is that all Australians deserve to have equal life opportunities, and that genuine reconciliation will only exist when indigenous disadvantage has been eliminated. Many steps have been made along the road to reconciliation as a result of the positive responses of individuals, groups

Effectiveness of Legal and on-Legal Responses in Relation to the Use of Child Soldiers - Sydney Boys High School - Essay

1258 words - 6 pages Effectiveness of Legal and on-Legal Responses in Relation to the Use of Child Soldier, in relation to the Sudan People's Liberation Army For centuries, children have been kidnapped and forced to join military forces with the promise of a better standard of life. Often being between the ages of 12 and 18, these children are too young to fully comprehend the fallacies they are being fed. In the process of becoming a soldier, many of their rights

Analyze The Causes Of And The Responses To The Peasants' Revolts In The German States, 1524–1526

1188 words - 5 pages . Therefore, the peasant revolts were viewed with both sympathy and disdain by the nobles.The European economy during the time experienced inflation due to the increase in demand for food and the colonization that occurred due to the European nations' seeking for power. Nobles began to transition from the open-field system to enclosures and charged high rents for their own luxurious needs. Peasants in turn, due to hunger and deprivation of economic

The Creation of the Musical Canon and Different Artists' Responses to It - Music 15 - Essay

1321 words - 6 pages , such as Johannes Brahms, Aaron Copland and John Cage, whose works can be seen as three different responses to the idea of this musical canon. The musical canon is the idea of a “list of works considered to be permanently established as being of the highest quality (Michaels)”. The canon began to emerge mid- to the late nineteenth century when there was a predominance of virtuosic composer-performers producing at the time. Until approximately the

The importance of hydrogen bonds in living organisms - Biology - Essay

636 words - 3 pages specificity due to the structure ensures that metabolic pathways are maintained. Enzymes control all metabolic reactions in the body such as respiration and photosynthesis where rubisco fixes carbon to RuBP in the light-independent reaction. It is highly important that these structures remain intact because otherwise these reactions cannot occur properly. Denaturation can be caused by changes in pH and temperature. Hydrogen bonds are also important

What Events in the play of Romeo and Juliet do you think changes the course of action from romance to tragedy?

355 words - 2 pages Romeo and Juliet, two lovers who long for eachothers warmth and love. Romeo and Juliet's love caused horror and pain for both families, the Capulets and the Montagues. The epic tale went from romance to tragedy because of the irrasponsibility of the characters. The tragic story took place in the city of Verona. The familes of Romeo and Juliet have been torn apart for a reason beyond the text. Juliet belonging to the house of Capulets and

Discuss The Changes And Continuities Of Russia From The 9th To The 18th Century

1061 words - 5 pages In 855, the civilization of Kievan Rus' developed, encompassing a small portion of modern day Russia. Around 1220, the Mongols arrived in Russia where they significantly influenced the Russian culture. In 1762, Catherine the Great became empress where she patronized Western culture. From the civilization of Kievan Rus' to the Russian Empire of Catherine the Great, Russia's contacts with the west, political structure, and territorial boundaries

Discuss The Xylem And Phloem. (Structure, Changes In The Xylem Of Woody Plants, Transport)

996 words - 4 pages walls of xylem conducting cells are complete they die. The contents within the cell disintegrate and leave a strong hollow cylinder filled with water. Water can travel in kind of a straight line due to the fact that these cells are stacked on top of each other. Tracheids are conducting cells of primitive vascular plants and they're long and extremely thin cells. Important in the transport is rays. Rays run from the center of the tree laterally

Analysis Of Cutaneous Sensation And Reflexes By Examining Receptive Responses

3163 words - 13 pages conducting a two-point discrimination test. This includes finding the location where two different stimuli are processed by the brain as a single stimulus in different areas of the body. These experiments help further the understanding how the body compensates for changes in the environment to maintain equilibrium.Materials and MethodsThe sensation portion of the experiment was divided into an adaptation and localization section. For temperature

A case analysis of Uber and its progress in exploring the Australian Market - Deakin - Case analysis

2435 words - 10 pages are vital part Uber’s future in taking advantage of its business opportunities and developing its firm’s international expansion strategy. Dynamic capabilities are the firm’s ability to anticipate changes and make changes in strategy, to adjust to changing competitive environment (Eriksson, 2014). Dynamic capabilities can be divided into three main categories, sensing, seizing and transforming capabilities. Porter’s 5 force theory allows us to

Changes of Adolescence to Adulthood - Welkom High School /10 - Essay

1189 words - 5 pages . What is Adolescence? Adolescence, transitional phase of growth and development between childhood and adulthood. The World Health Organization (WHO) defines an adolescent as any person between ages 10 and 19. This age range falls within WHO’s definition of young people, which refers to individuals between ages 10 and 24. In many societies, however, adolescence is narrowly equated with puberty and the cycle of physical changes end in reproductive

Indigenous Responses to Colonization - 2332 Introduction to Andean and Amazonian Cultures Ohio State - Essay

828 words - 4 pages Gabriella Mickel 2332 Introduction to Andean and Amazonian Cultures Topic number: 1 Indigenous Responses to Colonization In the late 15th century, Europeans, mainly the Spanish and Portuguese, began the colonization of South America. The original wave of conquistadores brought the indigenous people of South America war, slavery and disease. Indisputably, the Andean and Amazonian people and their cultures were negatively impacted by the arrival

the study of the changes in bone formation - djds - genetics

1076 words - 5 pages arising out of differences in organism which had a common ancestor. Coevolution: Evolution in which one organism causes another to change since they live in close association.. Pnctuated equilibrium: Evolution is stable for a time and suddenly jumps to new forms 9 This kind of evolution is proven by DNA analysis and results in organisms with different ancestors becoming more alike as they adapt to similar environments. 10 Adaptive radiation is also

Growing Up And The Changes Of Jem And Scout

611 words - 3 pages Free Growing up and the changes of Jem and ScoutThe theme of maturity and formation of personality is one of most important one in the novel To Kill a Mockingbird by American author Harper Lee. This is the story about the people of Maycomb city, Alabama which is narrated by six-year-old girl Jean Finch, or Scout as she is usually called in the book.Through Scout's eyes, we enter in the world of 1930s America where Afro-Americans have limited rights

Journey of Man, responses to video questions - Assignment #2- Video Response Questions

478 words - 2 pages melanin, the body's natural sunscreen which accounts for the pigment that occurs in our skin. As our ancestors inhabited Europe, a much colder climate, their skin had to adapt to new changes. With much less vitamin D is absorbed, their skin needed to lighten in order to allow for more sun exposure; therefore, allowing for more production of vitamin D. Although the coastal populations had a way of supplementing their vitamin D into their body; fish