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a fatty acid in which all the carbons in the hydrocarbon tail are conncected by single bonds thus maximizing the # of hydrogen atoms that can attach to the carbon skeleton. |
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scanning electron microscope |
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a microscope that uses an electron beam to scan the surface of a sample to study details of its topography. |
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a small, nonprotein, water-soluble molecule or ion, such as calcium ion or cyclic AMP, that relays a signal to a cell's interior in response to a signal received by a signal receptor protein. |
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a strong and durable matrix often deposited in several laminated layers for plant cell protection and support. |
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a haploid cell resulting from meiosis I in oogenesis which will becoe an ovum after meiosis II. |
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the localized, repetitive coiling or folding of the polypeptide backbone of a protein due to hydrogen bond formation between peptide linkages. |
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an adaptation for terrestrial plants consisting of an embryo packaged along with a store of food within a resistant coat. |
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replicated forms of a chromosome joined together by the centromere and eventually separated during mitosis or meiosis II. |
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an instrument that measures the proportions of light of different wavelengths absorbed and transmitted by a pigment solution. |
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the continuous and prolific production of mature sperm cells in the testis |
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a type of embryonic development in protostomes, in which the planes of cell division that transform the zygote into a ball of cells occur obliquely to the polar axis, resulting in cells of each tier sitting in the grooves between cells of adjacents |
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in the life cycle of a plant or alga undergoing alternation of generations, a meitotically produced haploid cell that divides mitotically, generating a multicellular individual the gametophyte, without fusing with another cell. |
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in organisms undergoing alternation of generations, the multicellular diploid form that results from a union of gametes and that meiotically produces haploid spores that grow into the gametophyte generation. |
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a storae polysaccharide in plants consisting entriely of glucose. |
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a type of lipid characterized by a carbon skeleton consisting of four rings with various functional groups attached. |
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a microscopic pore surrounded by guard cells in the epidermis of leaves and stems that allows gas exchange. |
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substrare-level phosphorylation |
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the formation of ATP by directly transferring a phosphate group to ADP from an intermediate substrate in catabolism. |
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the reactant on which an enzyme works. |
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the pairing of replicated homologous chromosomes during prophase I of meisosis. |
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