(1). The exact function of leg hemoglobin in the root nodule induced by Rhizobium in legume plants is: a. Transport of oxygen b. Transport of Nitrogenase to the nodule c. Transport of nitrates from the nodule d. Protection of Nitrogenase enzyme (2). The genome of CaMV (Cauliflower Mosaic Virus) is: […]
1. Penicillin-resistant bacteria produce β-lactamase which inactivates penicillin by: a. Esterifying the carboxyl group b. Oxidizing S atom c. Hydrolyzing the side chain d. Hydrolyzing the C-N bond Ans. (d) β-lactamases or penicillinase are a class of enzymes produced by some bacteria which degrade penicillin antibiotic and thereby impart resistance […]
(1). During glycogen metabolism, the glycogen in the cell is first breakdown to glucose-1-phosphate by the enzyme glycogen phosphorylase. This reaction is a______ a. Glycolysis reaction b. Hydrolysis reaction c. Phosphorolysis reaction d. Glucolysis reaction Learn more: MCQ on Carbohydrates (3 sets) (2). Which of the following genes is activated […]
(1). The quaternary structure of human hemoglobin is best described as: a. Dimer of two myoglobin dimers b. Tetramer of identical subunits c. Tetramer of four different subunits d. Tetramer of two different subunits (2). Which of the following statements is NOT true for Fluorescence Resonance Energy Transfer (FRET)? a. […]
(1). Action of topoisomerase leads to changes in a. Linking number of single-stranded linear DNA b. Lining number of double stranded linear DNA c. Linking number of closed circular single stranded DNA d. Linking number of closed circular double stranded DNA (2). Sarcomas are cancers originating from: a. Spleen b. […]