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      <title>Aktivni transport by Nives Petricevic</title>
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      <description>Biologija 3.razred</description>
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      <pubDate>2021-11-28 16:42:42 UTC</pubDate>
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         <description><![CDATA[<div>-Specifično kretanje molekule ili iona kroz biomembranu usuprot koncentracijskom gradijentu (od manje koncentracije prema većoj) uz utrošak metaboličke energije.&nbsp;</div>]]></description>
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         <pubDate>2021-11-28 16:48:35 UTC</pubDate>
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         <author>nivespetricevic2</author>
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         <description><![CDATA[<div><em>Primarni i Sekundarni aktivni transport<br>Primarni aktivni transport</em> (prijenos iona Na<sup>+</sup>, K<sup>+</sup>, H<sup>+</sup> i Ca<sup>2+</sup>) izravno je povezan s hidrolizom adenozin-trifosfata s pomoću iono-specifičnih adenozin-trifosfataznih crpki u membrani. <br><em>Sekundarni aktivni transport</em> troši energiju elektrokemijskoga (ili koncentracijskoga) gradijenta jedne (ioni Na<sup>+</sup>, H<sup>+</sup>) za prijenos druge tvari (šećeri, aminokiseline), dok usputna egzergona reakcija održava stalni gradijent.<em><br></em><br></div>]]></description>
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         <pubDate>2021-11-28 16:51:56 UTC</pubDate>
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         <author>nivespetricevic2</author>
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         <description><![CDATA[<div>Ako se aktivni transport odvija s pomoću molekule nosača, nosač može modificirati molekulu koju aktivno prenosi (fosforilacija glukoze). Transmembranskom kretanju kod bakterija pomažu permeaze.</div>]]></description>
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         <pubDate>2021-11-28 16:53:00 UTC</pubDate>
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         <author>nivespetricevic2</author>
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         <description><![CDATA[<div>Energija za funkcioniranje aktivnog transporta dobija se hidrolizom adenozin trifosfata u ADP. Proteini nosači djeluju kao pumpe i kao enzimi ATP - aze koje kataliziraju razlaganje ATP.&nbsp;</div>]]></description>
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         <pubDate>2021-11-28 16:56:17 UTC</pubDate>
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         <pubDate>2021-11-28 16:58:34 UTC</pubDate>
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         <author>nivespetricevic2</author>
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