Term
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Definition
| a type of embyronic development in deuterostomes in which the planes of cell division that transform the zygote into a ball of cells are either parallel or perpendicular to the polar axis, thereby aligning tiers of cells one above the other. |
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Term
| receptor-mediated endocytosis |
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Definition
| the movement of specific molecules into a cell by the inward budding of membranous vesicles containing proteins with receptor sites specific to the molecules being taken in; enables a cell to acquire bulk quantities of specific substances. |
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Term
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Definition
| a chemical reaction involving the transfer of one or more electrons from one reactant to anotherl also called oxidation-reduction reaction. |
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Term
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Definition
| a Y-shaped region on a replicating DNA molecules where new strands are growing. |
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Term
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Definition
a type of nucleic acid consisting of nucleotide monomers with a ribose sugar and the nitrogenous bases adenine, cytosine, guanine, and uracil; usually single-stranded; functions in protein synthesis and as the genome of some viruses. |
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Term
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Definition
| the most abundant type of RNA, which together with proteins forms the structure of ribsomes. Ribosomes coordinate the sequential couple of tRNA molecules to mRNA codons. |
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Term
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Definition
| an enzyme that links together the growing chain of ribonucleotides during transcription. |
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Term
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Definition
| the portion of the ER studded with ribosomes. |
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Term
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Definition
| the enzyme that catalyzes the first step of the Calvin cycle (the addition of CO2 to RUBP) |
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