Which of the following is not true of carbon?

A) it can bond with nitrogen
B) it can form long chains
C) it participates in covalent bonding
D) it can bond with four different elements
E) All are true about carbon

Which layer will become saturated first when rain falls?

Which of the following is the most likely outcome of global warming

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.