MCQ
The structural unit of nucleic acid is:
- ANucleoside
- BNucleoprotein
- CAmino acid
- ✓Nucleotide
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$a -$ Nuclear envelope assembles around chromosomes clusters.
$b -$ Spindle fibers attach to kinetochores of chromosomes.
$c-$ Condensation of chromosomes.
$d -$ Centromeres split and chromatids separate.
| Column $I$ | Column $II$ |
| ($a$) Smooth endoplasmic reticulum | ($i$) Protein synthesis |
| ($b$) Rough endoplasmic reticulum | ($ii$) Lipid synthesis |
| ($c$) Golgi complex | ($iii$) Glycosylation |
| ($d$) Centriole | ($iv$) Spindle formation |