Proteins and carbohydrates perform various functions in the body. they are needed for the proper development and growth of the body. breaking carbohydrates into their subunits will yield as products. breaking down proteins will yield products.

monosaccharides
amino acids
fatty acids

The proteins and carbohydrates are the two of the four biological macromolecules. The proteins and carbohydrates are the polymers made of the monomeric units amino acids and monosaccharides, respectively. When during the process of digestion, these macromolecules are broken up, they lead to the formation of their constituting monomeric units. The breaking down of carbohydrates yield monosaccharides, and the breaking of protein yields amino acids.

Hence, the blanks can be filled with 'monosaccharides and amino acids' respectively.

answer-

the statement that f(x) = |x+a| + b has exactly one x-intercept is sometimes correct.

solution-

it solely depends on b, whether the function will have one or two or zero x intercept.

this plot of the given function, f(x) = |x+a| + b will be the basic absolute value graph i.e v shape, with vertex translated to (-a, b), instead of origin.

1-   if b is zero, the graph will have exactly one x-intercept, at x= -a

2- if b is positive, the whole graph will be above the x-axis, hence it will have no x-intercepts.

3- if b is negative, the graph will be below the x-axis, hence it will have two x-intercepts.

∴ the statement is sometimes true.