Hopkins Marine Station Student Paper

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(full paper is archived in the Miller Library)

Title: Characteristics of amino acid uptake by the polychaete worm, Cirriformia spirabrahcha (Moore, 1904)
Student Author(s): Hubbard, Mark S.
Faculty Advisor(s): Epel, David
Pages: 14
Location: Final Papers Biology 175H
Date: June 1968
Keywords: Polychaete worm
Abstract: Studies were made on amino acid uptake into alcohol soluble and alcoho-insoluble products by the polychaete, Cirriformia spirabrancha. A radioactive tracer method was used employing glycine-UL-C14. The uptake versus wet weight relationship was linear, and can be expressed as Uptake = kW. The body wall and tentacles were the major areas of uptake, with the tentacles having a rate five times as great as the body on a weight basis. Uptake versus external concentration was also studied. The Vmax was 2.4 X 10 ^(-6) M/g per hour and the Km was 1.2 X 10^(-4) M/L.