NEET BIOLOGY

Detailed explanation-1: -Bacteria are prokaryotic and lack introns. Hence, splicesomes are not found in bacterial cells.

Detailed explanation-2: -Solution : Spliceosome is a large molecules complex found in nucleus of eukaryotic cells of plants, animals and fungi, etc. it is assembled from snRNAs and protein complexes that plays an important role in splicing of introns. Spliceosome is absent in cells of bacteria.

Detailed explanation-3: -Prokaryotic cells are those primitive cells that lack membrane bound organelles like mitochondria, nucleus etc. Though prokaryotic cells lack other organelles, they possess ribosomes. It does not contain spliceosomes. Thus it lacks a spliceosomal pathway.

Detailed explanation-4: -The spliceosome is a ribonucleoprotein complex involved in RNA splicing – that is, the removal of noncoding introns from precursor messenger RNA [138]. In general, most genes give rise to multiple spliced transcripts by alternative splicing.

Detailed explanation-5: -Other regions of the gene that do not form parts of mRNA are called introns. They are removed in RNA processing. The large machinery that includes several enzymes for this purpose is called spliceosomes. They take part in translation.