How does pkc’s signaling role change in response to growth factor signaling versus an immune response?
pkc interacts directly with signaling molecules in both cascades, but only exhibits kinase activity during growth factor signaling.
pkc interacts directly with signaling molecules in growth factor cascades, but interacts with signaling inhibitors during immune signaling.
pkc amplifies growth factor cascades, but turns off immune cascades.
pkc is activated during growth factor cascades, but is inactivated during immune response cascades.

well for one plants are always the producer, so a is the answer. a wolf is more of the consumer(predator) and the deer is the prey so i know those two are out of the question. also mushrooms are fungi/fungus so a is the producer.

some inherited genetic mutations can be good for the offspring, so the answer is different genetic mutations cause many forms of cancer.

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.