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The genetic code consists of___bases that stand for one amino acid
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3
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Messenger RNA is produced in the
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Cytoplasm
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Which is most directly reponsible for the sequence of amino acids in a protein?
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The number of codons in mRNA
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Transcription of part of a DNA molicule with a nucleotide sequence of AAACAACTT results in a mRNA molecule with the complementary sequence of
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UUUGUUGAA
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During the process of transcription the information in
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DNA is converted into RNA information
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Which of the following is the corriect sequence of zones in a longitudinal section of a root, starting from the bottom?
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Zone of cell division-zone of elongation-zone of maturation
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The specialized tissue in a root that functions in food storage is the
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Casparian ring
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Stomates
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Are surrounded by 4 guard cells
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The tussues of a leaf, from the upper surface to the lower surface, are
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Cuticle, epidermis, palisade mesophyll, sponge mesophyll, epidermis, cuticle
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The function of the spongy layer of a leaf is primarily
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Photosynthesis
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The__accounts for the attractiveness of many flowers
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Petals
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Which of the following is NOT a component of the pistil of a flower?
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Anthers
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The male gametophyte in flowering plants wil be found within the
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Pollen grain
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Alternation of generations in flowering plants includes the formation of a
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Sporophyte generation
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The pollen grain contains the
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Sperm
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