The Biological Importance of Water Essay Example

The Biological Importance of Water Paper Using the physical and chemical properties of water molecules discuss the biological importance of water. Life on Earth began in water and evolved over the course of 3 billion years before being able to spread onto land. Water is the substance the allows for the existence of any life at all on this planet. It makes up 70% of the human body, and equally large proportions of other living organisms. It also covers nearly three quarters of the Earth’s surface, shaping the face of this planet and the course of evolution over millions of years. Water molecules are polar molecules due to the hydrogen and oxygen atoms that form this remain slightly positive (in the case of hydrogen) and negative (in the case of oxygen). These slightly positive and negative charges then form hydrogen bonds with oppositely charged atoms. This creates weak bonds with other water molecules, and hold the substance (water) together, which is called cohesion. This cohesion helps the transport of water and di ssolved nutrients against gravity in plants. When water evaporates from a leaf, the hydrogen bonds cause water molecules basically ‘stick’ to the sides of the veins in the leaf, which is called adhesion. Adhesion to the molecules in cell walls helps to counter the effects on gravity on the water, enabling it to be transported through water-conductive cells up to the leaves. This allows plants to provide nutrients for growth, water for photosynthesis, and ions for the maintenance of plant proteins (used for growth and creating amino acids) and preventing any ion deficiencies, keeping the plant healthy and allowing it to grow even more. Without this polarity of water molecules, water and dissolved nutrients would not be able to pass from the roots up to the leaves, meaning that plants as we know them would not be able to survive on Earth. Furthermore, water allows for life to be sustained by moderating surface and air temperature, as well as body temperature. We will write a custom essay sample on The Biological Importance of Water specifically for you for only $16.38 $13.9/page Order now We will write a custom essay sample on The Biological Importance of Water specifically for you FOR ONLY $16.38 $13.9/page Hire Writer We will write a custom essay sample on The Biological Importance of Water specifically for you FOR ONLY $16.38 $13.9/page Hire Writer

Marie Antoinette Synopsis Essay

Marie Antoinette Synopsis Essay Marie Antoinette Synopsis Essay Marie Antoinette Film Synopsis Marie Antoinette is the most renowned and well-known French queen the world has ever known. The film, Marie Antoinette (2006), reveals this adequately. The film exhibits the life of the young French queen who was formerly Austrian; who became the French queen through a common practice of performing a hand-over that required the marriage of younger members of differing royal families. During the late 1700’s, Austria and France were struggling to achieve peace; the marriage of the Dauphin of France and the young princess of Austria, both equally young in age, seemed to be the solution to the problem. In the film we witness this occurring and we eventually we see that Marie Antoinette becomes the queen of France shortly after King Louis XV’s death in 1774. Following this, we begin to see Marie lead a life of luxury that contains lavish spending, gambling and drinking. Eventually, we see that she comes to symbolize everything that was wrong with the French monarchy at the t ime. In the movie, one of her most famous, yet not confirmed quotes, is stated, â€Å"Let them eat cake.† This quote sparked some of the French Revolution and it caused most of the French nation to view her with hatred because of her apparent ignorance to the French people’s rapidly decreasing quality of life. Even though the queen ignored the rumors and seemed to have it all, she struggled in one very important aspect of any queen’s life, the task of giving birth to an heir. In this time period, if a queen failed to give birth to an heir, she was viewed as unfit for the throne and she was often joked about during commoner/aristocratic dinner. The reason she struggled with this is because she often failed to arouse her husband’s sexual desires. Although this was reoccurring during the first decade of their marriage, Marie Antoinette eventually gave birth to an heir. Of the children she gave birth to, two of the children died causing for her reputation as queen to be weakened. As the French Revolution grew to a climax and the royal family was in an increasing amount of danger because of it, Marie Antoinette began to fear for the lives of her and her family. A few years later, she was executed in Paris and this marked the end of Marie Antoinette. In the beginning of her reign, Marie Antoinette had only a few conflicting loyalties between herself, her heritage and France. When she was handed over by the Austrians to the French, Marie Antoinette struggled to become everything the French desired in a future queen. She often struggled with leaving past practices in