of the animals. The kingdom monera contains primitive organisms. These organisms are very small‚ single celled and do not have a nucleus. They consist of prokaryotes which include species like the bacteria‚ archae bacteria‚ cyanobacteria and mycoplasma. Also‚ some bacteria are beneficial to us‚ such as the ones found in yogurt. But others can cause us to get sick. The kingdom protista as the kingdom monera contains single celled organisms. But these are different of the previous ones because of
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characteristics‚ but the one thing that we have in common would be cells. In fact every living thing is composed of cells: plants‚ animals‚ bacteria etc. Cells exist in different shapes and sizes. They also differ depending on the function they have in an organism. To make things simpler‚ cells are categorized into two vast groups: Prokaryotic and Eukaryotic Cells. These two types of cells are different from each other while still sharing some similarities. Eukaryotic and Prokaryotic Cells perform the same
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metabolism. Cells‚ the basic units of life‚ can perform many of these metabolic reactions. In a multicelled organism‚ the cells group together to form tissues that perform the same functions. Tissues group together to form organs‚ and finally‚ several organs exist together in a system. In this lesson‚ we will see how and why this hierarchy is established. The Basic Unit of Life All organisms from the smallest single-celled protists to huge whales and giant redwood trees are based on tiny microscopic
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plant as an example. ……………………………………………………………………………………………………………………….………………………………………………………………………………………………..……………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………… 2. Name two other organisms that reproduce asexually. …………………………………………………………………………………………… ……………................................................................................................................. 3. Complete the following sentences using the words in the box below
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Invasive Species have been described as an organism which is not native‚ and causes negative effects on the ecosystem‚ and to the health of humans. These organisms can be Fauna‚ Flora (Flora and Fauna refer to plant and wildlife‚ respectively)‚ a fungus or a bacterium. However‚ not all introduced species are invasive‚ but invasive Fauna and Flora‚ have been said to be the 2nd greatest threat to biodiversity post habitat loss. In his book‚ Invasive Species in a Changing World‚ Richard J. Hobbs (2013)
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The cell is the basic functioning unit of organisms in which chemical reactions take place. These reactions involve an energy release needed to support life and build structures. The cell consists of membrane bound organelles‚ which are responsible for the division of labour. There are two main classes of cells- Prokaryotes which are cells without a nucleus‚ where the DNA is spread around the cytoplasm of the cell‚ an example of a prokaryote is a bacterium (See Figure 1). The other class is the Eukaryotes
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enhancements‚ stem cell research‚ cloning‚ genetic engineering‚ and genetically modified organisms. Biotechnology is “the manipulation of biological systems and organisms through technological means”(p. 471). There is tension between valuing liberty to pursue happiness of biotechnologies‚ and the potential negative outcomes of these technologies. Bioengineering‚ is the construction of machines to alter or supplement organisms. Biotechnologies result in therapeutic effects or extraordinary forms of enhancement
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Cycle Living organisms are significant in the recycling of numerous elements contained in an ecosystem. One of the elements is carbon. Carbon is nonmetal‚ forms over ten million different compounds‚ found in minerals‚ oceans‚ and is the main component of biological compounds. So how do living organisms and their biochemical reactions contribute to the recycling of carbon? Carbon moves through the ecosystem in a cycle‚ in which the living organisms take and release different
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occur in various living organisms. Chemistry is the one science in which all the other sciences are based. In biology you learn about living organisms and their composition. Organisms are alive because of chemistry - Why we breathe oxygen‚ how we make energy‚ elimination of waste products‚ cellular respiration‚ etc. All of these are based on how living organisms use chemistry to live. Biological organisms have chemical compositions. Carbon is found in all living organisms. After that‚ because there
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Linneaus distinguished himself by classifying living organisms ac- cording to their similarities and differences. Classification schemes came to be based less on similarities and differences in form and more on evolutionary relatedness among species. Species that diverged from the same ancestors were grouped into the same categories. Cells: Matthias Schleiden and Theodor Schwann‚ both proposed the cell theory‚ which states that all organisms are composed of cells and that all cells come from
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