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Definitions (390)

1

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shoot system


parts of plants that are above the ground including leaves, stems, flowers, and fruits
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metric ruler


the standard instrument for measurement in the scientific laboratory
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3

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seasonal migration


the periodic movement of a population from one region or climate to another in accordance with the yearly cycle of weather and temperature changes
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capsid


protein coat surrounding the virus
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phloem


the living tissue that carries organic nutrients in vascular plants, particularly sucrose, a sugar, to all parts of the plant where needed
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translocation


the movement of materials, in the phloem, from leaves to other parts of the shoot system and the root system throughout the plant
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3' to 5' strand


the strand in DNA that has a 3' carbon free from bonding to other nucleotides at one end The nucleotides are joined at the 3' end of the molecule.
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5' to 3' strand


the strand in DNA that has a pentose (sugar) with 5' (said "five prime") carbon which is free from bonding at one end, 5′ (five prime) and 3′ (three prime) ends, with the 5' end ha [..]
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abiotic


physical or nonliving factor that shapes an ecosystem
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activation energy


energy that is needed to get a reaction started
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