Cell The Unit of Life Set 1

Question - 15 Maximum mark : - 15

What are those structures that appear as 'beads-on-string' in the chromosomes when viewed under electron microscope?

Nucleotides Nucleosomes Base pairs Genes NULL NULL NULL

The two polynucleotide chains in DNA are

Parallel Discontinuous Antiparallel Semi-conservative NULL NULL NULL

Centrosome is not present in

Cell of higher plants Cell of lower plants Cell of higher animals Cell of lower animals NULL NULL NULL

Channel proteins are involved in

Transport of enzymes Water transport Active transport of ions Passive transport of ions NULL NULL NULL

Part of chromosome after secondary constriction is called

Centriole Centromere Chromomere Satellite NULL NULL NULL

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