Scientists recently discovered a species of bacteria that’s capable of photosynthesis, but it’s anaerobic and doesn’t produce or use oxygen for respiration. which process will be absent in this organism? a. calvin cycle b. electron transport system c. glycolysis d. krebs cycle

Anaerobic bacteria: Bacteria which does not use oxygen or in the absence of oxygen.

electron transport system is absent in photosynthetic anaerobic bacteria.

since, glycolysis, krebs cycle are essential metabolic pathways in order to produce energy and calvin cycle is essential for the photosynthesis process.

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.