The tapeworm is a flat worm organism that links up to a host via the intestines. This organism feeds on the nutrients that are supposed to be normally absorbed by the host such as a human or dog. This relationship between the tapeworm and a host is called

Lactase is essential for digesting lactose in milk. this enzyme is specific for this sugar. why? molecules and active sites vary in size; only properly sized molecules can fit.there is a precise compatibility between the active site and the lactose molecule.specificity refers to the action of the enzyme, such as hydrolysis, and relatively few molecules can be hydrolyzed.reaction-specific enzymes assume a fit by folding around the most numerous substrate molecules.

The sea slug that considered to be a photosyntheesizing animal

Lupe is a carrier for color blindness. her husband clifford is colorblind. if lupe and clifford have four children, what's the probability of a boy being colorblind?