Which bond is broken during the hydrolysis of a disaccharide in the presence of an enzyme?

What is the general chemical formula of a disaccharide?

Carbohydrates are commonly found as starch in plant storage organs. Which of the following five properties of starch $(1-5)$ make it useful as a storage material?
$(1)$ Easily translocated
$(2)$ Chemically non-reactive
$(3)$ Easily digested by animals
$(4)$ Osmotically inactive
$(5)$ Synthesized during photosynthesis
The useful properties are:

Adenosine diphosphate $(ADP)$ contains how many high-energy phosphate bonds?

Select the correct option indicating the products of the following reaction:
Lactose $\xrightarrow{\text{Lactase}}$ $\square$ + $\square$

The most abundant component found on Earth is...