Ugljeni hidrati - struktura i osobine

New channel Tatjana Cebovic: title sample judged 'whole' (Biochemistry lectures covering metabolism, biomolecules, and lab methods delivered consistently as structured educationa); passed a second screen for sellers/exam-prep/re-uploads; 0 of 3 sampled transcripts showed teaching, 0 not; titles picked one by one, checked strictly; oEmbed verified.