<prompt> False about nucleolus:Contains DNAContains RNAContains genes for ribosomes ribosomal RNA needed in protein synthesisHas no limiting membrane  <response>: Ans. a Contains DNA. Ref. Harper, Biochemistry, 25,hpg. 402 Nucleus of eukaryotes contain DNA organized into separate chromosomes which are interconnected by lamina and covered by nuclear envelope made-up of inner and outer nuclear membrane. Nucleolus is a region in nucleus containing genes for 3 ribosomal RNA and it has no limiting membranes.Cell Organelle Cell organelleFunctions1RER- Protein synthesis by membrane bound ribosomes.2SER- Lipid synthesis. -Drug metabolism.3Golgi apparatus- Packaging secretory proteins and lysosomal enzymes. MH2006- Sorting of proteins also4Plasma membrane- Surface receptors, -Transport mechanism.5Peroxisomes- Oxidation leading to H2O2 and then water.6Lysosomes- Proteolytic enzymes, -Esterases and -Glycosidases.- Vitamin A toxicity effects7Mitochondria- Fatty acid oxidation, -Urea cycle enzymes some, -Ketone body synthesis,- TCA cycle, -ETC, -Apoptosis initiation phase8Cytosol- Glycosis, -Pentose shunt, -Neoglucogenesis except glucose-6 phosphatase in ER, and- Lactate dehydrogenase. 