THE COMMON READER--FIRST

BIO 1 ESSAY QUESTIONS – EXAM 1 - Mt. SAC

Date of publication: 2017-08-23 03:15

Crude oil is extracted world-wide at a very high rate to meets the bulk of the world's energy requirements. At the same time, crude oil constitutes a potential hazard if discharged into the environment. Such discharge happens despite the fact that the distribution and storage network for crude oil is closely and well monitored.

Analysing Remediation Of Contaminated Land In Nigeria

The light-independant reactions of photosynthesis occur in the stroma of the chloroplast and involve the conversion of carbon dioxide and other compounds into glucose. The light-independent reactions can be split into three stages, these are carbon fixation, the reduction reactions and finally the regeneration of ribulose bisphosphate. Collectively these stages are known as the Calvin Cycle.

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Some creatures, however, do not need to breathe air but instead survive by anaerobic respiration. This is true primarily of some forms of bacteria, and indeed scientists believe that the first organisms to appear on Earth x5577 s surface were anaerobic. Those organisms arose when Earth x5577 s atmosphere contained very little oxygen, and as the composition of the atmosphere began to incorporate more oxygen over the course of many millions of years, new organisms evolved that were adapted to that condition.

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In anaerobic cell respiration the pyruvate stays in the cytoplasm and in humans is converted into lactate which is the removed from the cell. In yeast the pyruvate is converted into carbon dioxide and ethanol. In either case, no ATP is produced.

The parts of the body that work together to move blood and lymph. They include the heart, blood vessels, blood, and the lymphatic glands, such as the lymph nodes.

Later in this essay, we discuss some of the ways in which various life-forms breathe, but suffice it to say for the moment x7569 hardly a surprising revelation! x7569 that the human lungs and respiratory system are among the more complex mechanisms for breathing in the animal world. In humans and other animals with relatively complex breathing mechanisms (., lungs or gills), oxygen passes through the breathing apparatus, is absorbed by the bloodstream, and then is converted into an unstable chemical compound (., one that is broken down easily) and carried to cells. When the compound reaches a cell, it is broken down and releases its oxygen, which passes into the cell.

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The simplest type of carbohydrate. Monosaccharides, which cannot be broken down chemically into simpler carbohydrates, also are known as simple sugars.

Paustian, Timothy. Anaerobic Respiration. Department of Bacteriology, University of Wisconsin-Madison (Web site). x558c http:///microtextbook/Metabolism/ x558e .

Respiration is much more than just breathing in fact, the term refers to two separate processes, only one of which is the intake and outflow of breath. At least cellular respiration, the process by which organisms convert food into chemical energy, requires oxygen on the other hand, some forms of respiration are anaerobic, meaning that they require no oxygen. Such is the case, for instance, with some bacteria, such as those that convert ethyl alcohol to vinegar. Likewise, an anaerobic process can take place in human muscle tissue, producing lactic acid x7569 something so painful that it feels as though vinegar itself were being poured on an open sore.

In fact, a person cannot consciously stop breathing for a prolonged period, and for this reason, people cannot kill themselves simply by holding their breath. A buildup of carbon dioxide and hydrogen ions (electrically charged atoms) in the bloodstream stimulates the breathing centers to become active, no matter what we try to do. On the other hand, if a person were underwater, the lungs would draw in water instead of air, and though water contains air, the drowning person would suffocate.

Nowadays across the globe, land contamination is gaining a higher official recognition and is been recognised as a serious challenge to present and future generation. Recently a lot of policies for sustainable development and contaminated land management have been introduced and so many countries especially in developed countries have implemented these policies. Despite this trend, the Nigeria Government and oil multinational companies operating in that country are yet to implement such policies. They agree with sustainable development and good environmental management but these are only seen as a paper exercise''. There is no adequate implementation of sustainable development and environmental management in Nigeria.

The chemical process by which nutrients are broken down and converted into energy or are used in the construction of new tissue or other material in the body. All metabolic reactions are either catabolic or anabolic.

If oxygen is available, the pyruvate is taken up into the mitochondria and is broken down into carbon dioxide and water. A large amount of ATP is released during this process.

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