Living Organisms College Essays Samples For Students

A chemist may be draw to the science because it contains physics and mathematics, with results clearly defined. On the other hand, biology can be messy, with fluids and disrupted bodies and patient suffering. For the nursing professional, there may be the temptation to define a physical process present in a patient as either biological or chemical. Technically, the definition for biology is simply the “scientific study of living organisms” (TheFreeDictionary.com), while chemistry is “a science that deals with the composition, structure, and properties of substances and of the transformations that they undergo” (Merriam-webster.com). However, the lines blur when ...

Chapter #16:

Question 1.
Insect-eating birds will decrease in number since their source of food has been reduced. The birds may also migrate to warmer areas during this period.

Question 2.

The habitat is the specific place where the organism lives e.g. a fish’s habitat is water. On the other hand, niche is the position and the role played by the organism in an ecosystem. It includes how the organism obtain food and shelter, the mode of survival, and the mode of reproduction (Sutton & Anderson, 2009, p. 46). For instance, a lion’s niche in the ecosystem is that of a predator.Question ...

Materials Extraction

These batteries consist of heavy metals such as cadmium, mercury, zinc, and nickel, which are environmental pollutants. Hence recycling them instead of incinerating them together with household waste saves our environment. These valuable metals are recovered during the process of recycling and consequently, save energy by minimizing the use of raw materials. Several materials are extracted from the used batteries and are used to manufacture new ones. Manganese dioxide, which is normally used to catalyze the reaction that produces oxygen from hydrogen peroxide, is contained in the zinc carbon cell. Dry batteries also contain metallic zinc, which is usually ...

Introduction

Cellular respiration and photosynthesis are vital reactions in living organisms since without the two; there would be no life on earth. Cellular respiration involves a set of metabolic reactions that take place in cells of living organisms thereby converting nutrients like sugar into adenosine triphosphate (ATP) (Osterhoudt & Barhydt, 2010). On the other hand, photosynthesis involves the conversion of carbon dioxide into organic compounds by the photoautotroph in the presence of sunlight. Most animals attain their energy requirements through cellular respiration while on the other hand; photosynthesis is performed by most plants that can make their food. These two reactions ...

THE SCIENCE OF FOOD

Cancer and nutrition – good nutrition is very important in the management of cancer and thus healthy eating habits are encouraged during this period. Tumors that develop in the stomach or intestines may, however, affect the way the body uses the food that is ingested and may not absorb all the food, although the patient may be seen to be eating enough food. The side effects that may affect eating when one has cancer include vomiting, dry mouth, constipation, mouth sores, loss of appetite among others.
Nutrition therapy is advised for cancer patients to help maintain a good quality life ...

The anthropocentric approach to the environmental ethics is one of the main approaches as it touches on a significant part of the relationship between human beings and nature. This approach is the idea that humans are the most valued in the universe and take the central role. In other words, human beings have the power and dominion over other living things in the universe, including plants and animals. The approach gets its roots mainly from the Bible and science. In the Bible, God is said to have given humans the power to look after the creation. Scientists view human ...

Why Choose Biology

Many people study medicine when it comes to science in educational institutes. I chose to study biology. According to one source biology is "The science of life and living organisms, including their structure, function, growth, origin, evolution and distribution.” (The Free Dictionary). Biology allows us to test our thoughts on life and living subjects, find new or linked species and conduct reverse–engineering. Before becoming a doctor or nurse it is one of the subjects many will take. Before accepting a degree in engineering or the field of a scientist it is also one of the areas most studied ...

Infrared Rays and Ultraviolet Rays

Infrared Rays
Infrared (IR) rays are electromagnetic radiations with wavelengths 700nm – 1mm. Almost half of the sun’s energy is made up of infrared waves. They have frequencies of 4-7.5 *10^14 Hz, which is lower than that of visible red light. Hence, IR rays are not visible to the human eye. However, there are several animals which can see IR rays like the snake which uses infrared rays to hunt its prey. IR rays travel with the speed of light which is 300,000,000 meters/sec. IR waves are found in almost every object in the universe which ...

“That’s one small step for a man, one giant leap for mankind." Grandfather said this phrase with a confident voice. It is always the case when we are up late night; sitting on the roof, my grandfather pretends to be Neil Armstrong. He starts to tell us all about that day in July 1969, at 10:56 p.m. EDT, more than half a billion people were watching television waiting for Armstronghim to put his foot on the moon. He is so excited in playing Neil Armstrong’s part, and he keeps saying that this step helped us to evolve ...

Biomedical engineering is a discipline that encompasses engineering field and medical field in order to solve pertinent problems. It bridges the gap between medicine and engineering. The products of this endeavour include the design and development of therapeutic and diagnostic devices, prostheses, imaging equipment such as Magnetic Resonance Imaging (MRI) etc. The field of biomedical engineering thus has three main specialization areas which are (i) biomechanics, (ii) tissue and cellular engineering and (iii) imaging. These specialization areas are explained further in the following sections of this paper.
i. Biomechanics
Biomechanics is the study of mechanics in the human body ( ...

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Water is a colourless and odourless liquid, and is very important for human development and survival. It covers 75% of the earth's surface and is mostly found in lakes, rivers and seas. In addition, the human body comprises 78% of water. Water is an interesting molecule and consists of one oxygen atom and two hydrogen atoms. It is covalently bonded and possesses a very interesting characteristic, i.e. polarity. Polarity ensures that water is an effective medium for the dissolution of other polar compounds. In so doing, water is an enabler for many biological reactions (“The Chemistry of ...

Introduction

Biology is broad and therefore embraces various topics in life that concern living organisms. Micro biology for instance deals with the study of very small organisms that are able to reproduce and sustain their generations. This is where the study of prokaryotes comes into the scene. The contrasting organisms to prokaryotes are referred to as eukaryotes. Contrary to prokaryotes, eukaryotic organisms have complex cell structures. Biology tends to full describe the complete nature of these organisms, their feeding habits, how they reproduce and where they thrive best, that is, their habitats.

Prokaryotes are single celled organisms whose cells lack ...

Introduction

Life Cycle assessment (LCA) can be described as one of the most vital and essential methods of analyzing and assessing the general environmental effects and impacts of merchandise, services, produce, products, good or processes. It is actually in other words referred to as Life Cycle Analysis (LCA) and it really evaluates and reviews the environmental effects of a product from the time of production, process or procedure from plan and design to the time of disposal. In addition, LCA reviews the whole life cycle of a product or process and it involves the collection and assemblage of data, the evaluation and ...