Essay

2382 words - 10 pages

Introduction
Cells are the basic units of life and their processes are vital to the functioning of all organism. The reactions of photosynthesis and cellular respiration are complimentary and are also the most important pathways on the Earth. Photosynthesis is a process that converts carbon dioxide into organic compounds in presence of sunlight. Cellular respiration is the set of metabolic reactions that take in cells of living organisms that convert nutrients like sugar into energy , which is known as ATP (adenosine triphosphate), and waste products. The two processes are closely related and likewise, they share many similarities and differences
Processes in a Nutshell
The main difference between photosynthesis and cellular respiration is that photosynthesis takes place in the chloroplast and cellular respiration takes place in the mitchondrion. Plants contain mitochondria and chloroplasts so both they may undergo both processes. However, animals and other heterotrophs undergo cellular respiration, but not photosynthesis. In a nutshell, the purpose of these processes is to convert free energy into ATP.

Discovery of Photosynthesis
The beginning of the discovery of photosynthesis began in the mid-17th century when J.B. Van Helmont carefully measured the mass of the soil used by a plant and the mass of the plant as it grew. After this noticed that the soil mass changed very little. He then hypothesized that the mass of the growing plant must come from the water. His hypothesis was partially accurate as much of the gained mass also comes from carbon dioxide as well as water. After this in 1771, Joeseph Priestley, an English scientist, discovered that, when he lit a candle in a closed container it would burn out. However, once he placed a mint plant in the container the candle could burn once again. This discovery supported that plants release some type of gas into the air that supports combustion. In 1796, Jan Ingenhousz, a Dutch medical doctor, repeated Priestley's experiments and confirmed his findings. He also eluded that the gas released was oxygen. Around this time, Jean Senebier, a Swiss pastor, botanist, and naturalist, demonstrated that green plants consume carbon dioxide and release oxygen under the influence of light. Soon afterward, Nicolas-Théodore de Saussure showed that the increase in mass of the plant as it grows could not be due only to uptake of carbon dioxide, but also to the incorporation of water. Thus, the basic reaction by which photosynthesis is used to produce food (such as glucose) was outlined. In the early 1930's, Cornelis Van Niel made important discoveries that help explain the chemistry of photosynthesis. By studying purple sulfur bacteria and green bacteria he was the first scientist to demonstrate that photosynthesis is a light-dependent redox reaction, in which hydrogen reduces carbon dioxide. Robert Emerson conducted experiments that helped him discover that there were two photosytems, one...

Find Another Essay On ESSAY

Essay

670 words - 3 pages Democratic is when citizens vote for all elected officials. Many had defied political system as it was, and thrived towards to create a democratic system that will be beneficial for America as a whole. Andrew Jackson was one of those individuals who challenged the government’s views, and whose name is tied closely to democracy. This essay will focus on the aspects that made this president so great and how democratic was he in actual fact

Essay

1530 words - 7 pages Essay 1 In this essay you will be finding out the importance of not being subjective. Subjective means that you are ‘of, relating to, or emanating from a person's emotions, prejudices, etc.’ (Collins English Dictionary , 2011) This means you would be influenced by your own personal feelings and would be judging a child. This could be because of how the child has behaved before. By doing this, you would be recording the behaviour that you

Essay

973 words - 4 pages include the loop, arch, and the whorl, which is a pattern of spirals on the tip of your fingerprint. Because everyone has a set of unique fingerprints, everyone leaves behind an impression of their fingerprint on the surfaces that they touch. There are three different types of fingerprints that are left behind: latent, visible, and plastic. Latent fingerprints are going to be the focus of this extended essay. Plastic fingerprints and visible

essay

666 words - 3 pages along with biology gave me a deeper understanding of the chemical reactions occuring in my body, aiding in the working of my body at every point. English Language and literature at AS level helped improve my essay writing skills and strengthened my ability of analytical approach which will be of advantage at a university. Singing and acting provided me with an environment not available in a classroom or a laboratory. While playing a role, I learnt

essay

886 words - 4 pages Essay Sir Richard Branson is a British entrepreneur. He was born July 18th 1950 in Blackheath, London. He is known as the founder of the Virgin brand and to be quite the adventurer. The Virgin brand consists of more than 400 companies and to mention some of those are Virgin Atlantic, Virgin Galactic, Virgin Trains and Virgin Mobile. He as a person has made several attempts to break numerous world records. Although he had to try 2 times, he broke

Essay

720 words - 3 pages Court nominees by the Constitution’s drafters (357). Giving the Senate the ability to use ideology in nomination debates means the Framers intended ideology to be a factor. This statement is not fully supported as the essay goes on to reiterate the previous argument that the division between states at the time is akin to today’s party politics. And this statement, though I consider it a valid and major point, is possibly the strongest argument

Essay

1193 words - 5 pages This essay will explain the importance of not being subjective whilst working with children. According to Collins’ English Dictionary, subjective means that you are ‘relating to or emanating from a person’s emotions or prejudices’. In brief, this means that you are reliant on your own personal feelings therefore resulting to you judging that child for not displaying the behaviour that you would expect. The opposite of subjective is objective

Essay

1103 words - 5 pages There are many ways that TV commercial’s use to sell an item to a certain age group. This essay will focus on the main techniques that TV commercial’s use, even though they are main used but there are few that really focus on the foundation of the ad, these make the ad key and specific to a certain targeted audience. The three main supporting arguments are specific colors are used to make a certain toy or product so say if the product is

essay

1258 words - 6 pages saying at the time. Furthermore J.K Rowling use of rhetorical device spiced her essay up. She asks, “So why do I talk about the benefits of failure?” (Rowling, 2008). This is an example of a rhetorical device because this question was used merely for effects with no answer expected. Also, J.K. Rowling use of rhetorical device helped keep her audience engaged with her speech, because it forces them to be on their toes and think. She states “But

essay - 1306 words

1306 words - 6 pages Koy Saeteurn Theater 11 Textbook Essay 1 In the 16th century, the most extreme Protestants within the Church of England was given the name Puritans. They wanted to purify their church and rid the church of any Catholic influence. The elements of the Puritan's religion included simple worshipping services, personal and direct religious experiences with God by reading the Holy Bible, and moral conduct. They believed in

essay - 1218 words

1218 words - 5 pages to work on environmental improvements. Integrated watershed management is a collection of target points that linked disciplines (Karageorgis et al., 2005). However, in many cases interdisciplinary watershed management lacks practical applicability. My proposition is in developing countries integrated watershed management is not actually an interdisciplinary project approach. Therefore, the objective of this essay is to argue on watershed

Similar Essays

Essay 769 Words

769 words - 4 pages The book “Women: Images and Realities a Multicultural Anthology,” by Suzanne Kelly, has many impactful essays, poems, and stories. The essay which I found to be the signal most impactful essay is entitled “ Fence Sitters, Switch Hitters, and Bi-Bi Girls: An Exploration of Hapa and Bisexual Identities,” by Beverly Yuen Thompson. Thompson, a biracial woman of Asian and Anglo heritage wrote this essay in 2000. In the essay Thompson addresses

Essay 764 Words

764 words - 4 pages There are different types of essay writing including descriptive, illustrative, compare and contrast, persuasive and cause an effect. The main idea of the essay, or the thesis, is presented in the first paragraph. The thesis of this essay is how to use the writing process to effectively apply composition techniques including wriing the thesis statement, using topic sentences, transitiions, details, and proper conventions to elaborate your ideas

Essay 1269 Words

1269 words - 6 pages In 1998 a man named James Byrd was drug from a pickup truck in Texas and dismembered. Ashraf Rushdy wrote an essay to examine the moral authority of photography and the effect it has upon a population’s view of a tragedy. Rushdy’s argument is that in 1955 when Emmett Till was murdered his mother allowed photographs of her son’s mutilated corpse to be shown across the nation. These photographs had a significant effect upon the course of the civil

Essay 606 Words

606 words - 2 pages ENGL 100 Essay Project Final TemplateStep 5: Essay Project Final DraftDirections: Turn off the "Track Changes" feature. Copy and paste your edited draft. Select the entire essay and choose "Accept Changes" if the document does not automatically make the changes for you. Save the changes to this document; save it as "Essay Project Assignment." Then use the link provided in Blackboard to submit the document to your instructor. The instructor