Could proteins have been the first self replicating molecules? Why or why not? Explain.

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.

Agroup of students want to live a healthier life style they decide to use one of these following vegetable oils for cooking apex

After a group of researchers conducts a new experiment that has never been conducted before, what is the best way for other scientists to make sure that the data is real