All living organisms are composed of one or more cells‚ and like any living organism‚ cells are made up of smaller structures that help them function. In the context of cells‚ these smaller structures are referred to as organelles and each organelle has its own unique function that has developed over time. While we are typically aware of how these organelles function‚ how they evolved raises several questions. The main model for how eukaryotic cells evolved over time is the endosymbiont theory. This
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I HOLD THE FUTURE: PRESERVING THE PHILIPPINES BIODIVERSITY The sum of all the different species of animals‚ plants‚ fungi‚ and microbial organisms living on Earth and the variety of habitats in which they live is called Biological Diversity or also known as the Biodiversity. Scientists estimate that upwards of 10 million—and some suggest more than 100 million—different species inhabit the Earth. Each species is adapted to its unique niche in the environment‚ from the peaks of mountains to the depths
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guessed‚ or already knew‚ and may not be all that interested to know‚ anyway). Microbiology is actually made up of several sub-disciplines. Microbiology‚ one of the fastest growing areas of science‚ is the study of organisms so small that they must be viewed with a microscope. These organisms are primarily bacteria‚ yeasts‚ molds‚ and viruses. Many of the most important scientific discoveries of recent years have been made by microbiologists: since 1910‚ one-third of the Nobel Prizes in medicine and
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Human Biology‚ 7e (Johnson) Chapter 1 Human Biology‚ Science‚ and Society 1.1 Multiple Choice Questions 1) The branch of science that studies living organisms and their life processes is A) biology B) geology C) chemistry D) physics Answer: A Topic: Sec. 1.0 Skill: Knowledge/Comprehension 2) The process by which living organisms maintain a fairly constant internal environment despite changes in the external environment is known as A) metabolism B) biology C) homeostasis D) evolution
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The organisms first believed to live on Earth were the Prokaryotes. Prokaryotes have many differences and similarities to a Eukaryote. For an example‚ their names sound similar yet they are not the same so that makes them different. Since there are so many organisms‚ the organisms are separated into those two broad categories. Prokaryotes are nearly always a unicellular organisms. An example of a Prokaryote is bacteria and archaea . Prokaryotes do not contain a nucleus or a membrane that should
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Ubiquity of Microbes Bacteria are the most widely distributed organisms in the biosphere. They are found in all different types of soil‚ water and even in the bodies of other living organisms. Every single place that humans have explored on the Earth‚ have shown to contain microbes. Bacteria are living organisms and like all living organisms‚ they require energy and carbon sources in order to metabolize and reproduce. And like all living organisms they respond to changes in their environment. Ubiquity
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Life beyond Earth does exist. The life that exists beyond Earth is only simple microbial life. In order for complex life to exist many specific events would have had to happen which is highly unlikely. Spacecrafts have found regions of other planets that appear to be able to sustain simple life. Simple life forms have been found on Earth in extreme conditions never thought possible. On someplace other than Earth simple life forms do exist. If complex life were to occur on places other than
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Natural Selection Paper Natural selection is considered one of the most important processes for a variety of species and the environment which allows the fittest organisms to produce offspring. To prevent a species from extinction‚ it is necessary for them to adapt to the surrounding environment. The species which have the ability to adapt to new surroundings will be able to pass their genes through reproduction. Within the process of natural selection‚ it is possible for the original genetic make-up
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Cephalochordata. This organism may be tiny in size‚ but their impact on human evolution is tremendous! Carol MacKintosh‚ a professor in the College of Life Sciences at the University of Dundee‚ defines them as “…a very distant cousin to humans and other vertibrates. It is the creature most similar to the original spineless organism that existed before a major genomic event occurred.” A new study indicates a genetic error‚ which took place 500 million years ago‚ led to human evolution. This organism went through
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Pond Water Paper DIRECTIONS STYLE TENSE: In all sections of the paper‚ present tense should be used to report background that is already established. For example‚ "The cell membrane is the barrier which separates the inside of the cell from the outside." Use future tense for work that you will do. For example‚ "This experiment will test the hypothesis that some anti-microbial agents can permeate the cell membrane during division to inhibit growth." Use past tense to describe the methods (what
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