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My unpainted and dirty fingernails are an example of keratin. Keratin is a family of fibrous structural proteins. It is also the key structure of human skin, hair and nails.
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This is picture of my coleus plants the first week I planted them. A coleus plant contains meristem which is the tissue in all plants consisting of undifferentiated cells. It can be found in all places growth occurs.
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The term frond means large, divided leaf. These leaves are held together through a single stem but are all seperate and live in their own space. I found these leaves on the tree infront of my house.
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My begonia plants outside on my porch are considered autotrophs. An autotroph is an organism that produces it's own food through photosynthesis. All plants are autotrophs.
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Clearly, this is my tongue. Amylase, an enzyme that breaks down starch into sugar is present in salivia, which is produced in my tongue.
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