Hi Aasharma,
The site of action for lactase, maltase, and sucrase is the small intestine.
-AS
Glyco means carbohydrate. Glycoproteins have carbohydrate attached to protein, whereas Glycolipids have carbodrate attached to lipid (like fatty acids).
Genes are located on chromosomes and these chromosomes are passed into the gametes in sexual reproduction. If two genes are closely linked, it is likely that their positions on a chromosome are close together. This is why they are likely to be sent into the same gamete of the parent and inherited by the offspring.
The correct answer is that it's most luminous when it is a giant star. A giant star has bigger luminosity than a dwarf of a main sequence star (sun is one) of the same surface temperature
