You discover a new species of bacteria that grows in aquatic environments with high salt levels. while studying these bacteria, you note that their internal environment is similar to the salt concentrations in their surroundings. you also discover that the internal salt concentrations of the bacteria change as the salt concentration in their environment changes. the new species can tolerate small changes in this way, but dies from large changes because it has no mechanism for altering its own internal salt levels. what type of homeostatic mechanism is this species using to regulate its internal salt levels?
a) conformation
b) regulation
c) integration
d) assimilation

The correct answer to the question: What type of homeostatic mechanism is this species using to regulate its internal salt levels? Would be A: Conformation.

Explanation:

The reason for this being the right answer comes from the context of the question itself. You have a bacteria who is placed in a specific environment. As you study it, you realize that the salt concentration both in the internal and external environment of the bacterial cell is similar. Also, you notice that if you alter the concentrations of the outside medium, the bacteria responds by adjusting its own internal environment, However, the changes that the bacterial cell will accept before not being able to adapt its homeostatic mechanisms are not very big, and if you raise the salt level too much, then there will be a limit as to how much the bacteria can also conform to those changes. This is the mechanism described as conformation.

9.9 years

a = p(1 + rt) . . account balance after time t at rate r starting with principal p

3000 = 2500(1 + 0.0202t) . . filling in the given numbers

1.2 = 1 + 0.0202t . . divide by 2500

0.2 = 0.0202t . . . subtract 1

0.2/0.0202 = t ≈ 9.901

it will take about 9.9 years for the account balance to reach $3000.