MCQ
Algae have cell wall made up of:
- ACellulose, hemicellulose and pectins.
- BPectins, cellulose and proteins.
- CHemicellulose, pectins and proteins.
- DCellulose, galactans and mannans.
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| Column-$I$ | Column-$II$ |
| (Cell type) | (Size) |
| $A$. Viruses | $I$. $1-2\; mm$ |
| $B$. $PPLO$ | $II$. $10-20\; mm$ |
| $C$. Eukaryotic cell | $III$. About $0.1\; mm$ |
| $D$. Bacterium | $IV$. $0.02-0.2\; mm$ |
$a$. Large and more numerous nucleoli are present in cells actively carrying out protein synthesis.
$b$. Nuclear pores allow bidirectional movement of molecules.
$c$. Cytoskeleton is a glycolipid structure for mechanical support, motility and maintenance of the shape of the cell.
$d$. Steroidal hormones are synthesized by Golgi complex.