A group of mutant mice have difficulty-maintaining balance, and walk in zigzags. This defect has been attributed to a neuronal and glial (neuroglial) sodium-coupled glutamate transporter (called EAAT37) , which is important in maintaining low glutamate levels in the extracellular space. Assume that sodium is more concentrated on the outside of the cell than inside. Assume that glutamate is more concentrated inside the cell than outside. Suddenly, you increase by the glutamate concentration inside the neuoroglia. What effect will this have on the ability of EAAT37 to concentrate glutamate within cells

answer; i believe that the correct answer is ; males are hemizygous for the x chromosome;

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.