Q. The most common secondary structure of proteins is β-pleated sheetβ-pleated sheet parallelβ-pleated sheet non-parallelα-helix Answer: α-helix

Q. Mineral associated with cytochrome is MgCu and AgFeCu Answer: Fe

Q. Name the simplest amino acid AlanineTyrosineAsparagineGlycine Answer: Glycine

Q. Choose the best option proteins has catalytic activityProteins and RNA have catalytic activityProteins, RNA and antibodies have catalytic activityProteins, RNA, antibodies and phospholipids have catalytic activity Answer: Proteins, RNA and antibodies have catalytic activity

Functions of nucleotide includes

To identify self DNA from non-self DNA, the self DNA may be

Q. The pentoses in nucleotides are in β-furanose formin α-furanose formBothnone of the above Answer: in β-furanose form

Q. N-linked oligosaccharides are linked to protein via NH2 groups of Asparagine. The sequence containing asparagine is usually asp-X-ser/thr. X can be any amino acid except glycinehistidineprolineserine Answer: proline

Q. O- linked oligosaccharides are attached to the protein via OH group of serine or tyrosineOH group of serine or threonineOH group of tyrosine or threonineOH group of threonine only Answer: OH group of serine or threonine

Q. Glycosylation takes place in SER and golgiRER and golgiSER, RER and golgiRER, golgi and mitochondria Answer: RER and golgi

Q. Lectins binds preferentially to more polar region of the carbohydrate residueless polar region of the carbohydrate residueboth polar and non-polar region of the carbohydrate residueAll of the above Answer: more polar region of the carbohydrate residue

Q. Selectins are Plasma membrane lectins involved in cell-cell recognitioncytosolic lectins involved in intracellular signallingPlasma membrane glycoproteins involved in cell to cell interactionPlasma membrane glycoproteins that functions as second messengers Answer: Plasma membrane lectins ...