the movement of molecules or ions from the region where they are in high concentration to one of low concentration
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Card 17
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a cell that has membrane bound nucleus and chromosomes. the cell also possesses a variety of other membranous organelles, such as mitochondria and endoplasmic reticulum
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Card 18
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diffusion involving the presence of protein carrier molecules to allow the passive movement of substances across plasma membranes
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Card 19
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section of DNA on a chromosome coding for one or more polypeptide
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Card 20
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a pair of chromosomes one maternal one paternal that have the same gene loci and therefore determine the same features. they are not neccessarily identical, however, as individual alleles of the same gene may vary
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Card 21
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the means by which the body protects itself from infection
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Card 22
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differences between organisms of different species
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Card 23
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differences between organisms of the same species
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Card 24
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solutions that possess the same concentration of the solutes and therefore have the same water potential
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Card 25
Front
the hollow cavity inside a tubular structure such as the gut or xylem
