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The effect of divalent metal cations (Cd 2+ , Cu 2+ , Zn 2+ , Fe 2+ , Co 2+ ) on nitrate uptake and the effect of Cd 2+ on nitrogen and sulphur assimilation enzymes were studied in the eukaryotic alga Chlamydomonas reinhardtii. Nitrate consumption was not inhibited by metal concentrations below 100<space>μM; however,...