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- 1. Multiple ChoiceIn a double helix of DNA, the two stands arecoiled around a common axiscoiled around each other
- 2. Multiple ChoiceLiving cells contain 60-95% water. Water present in human body is75-80%70-75%65-70%
- 3. Multiple ChoiceIn RNA, thymine is replaced byadenineguaninecytosineuracil
- 4. Multiple ChoiceAmino acids are produced fromproteinsfatty acidsessential oils
- 5. Multiple ChoiceLipids are insoluble in water because lipid molecules arehydrophobicHydrophilic
- 6. Multiple ChoiceWhich purine base is found in RNA?thymineuracilcytosineguanine
- 7. Multiple ChoiceATP isvitaminenzymenucleic acidnucleotide
- 8. Multiple ChoiceNucleotides are building blocks of nucleic acid. Each nucleotide is a composite molecule formed bybase- sugar- phosphatebase- sugar- OHsugar- phosphate
- 9. Multiple ChoiceThe major role of minor elements inside living organisms, is to act asCo factors of enzymesBinder of cell structureConstituent of hormonesBuilding blocks of important amino acids
- 10. Multiple ChoiceWhich of the following nucleotide sequences contains four pyrimidine bases?GATCAATGCUAGCGGUAA
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