一歩一歩学ぶ生命科学
POINT!

① Summer came. Room temperature is increased with the summer heat. Cooler decreases room temperature. These are in the opposite direction (blue).

② Since these are in the opposite direction, negative feedback facilitate (red) the cooler (function, such as by turning the power on). Because of this control, the room temperature-decreasing effect of the cooler strengthens, and the increased room temperature decreases (towards that before summer).

Namely, the initial change (the increase in room temperature) decreases (red upward unfilled arrow disappears).
This simply says, when room temperature is increased (with the summer heat), coolers are used. In the present "Step-By-Step Study of Life Sciences", let's call such control bluered negative feedback.

Challenge Quiz

1.

With the summer heat, room temperature is increased decreased , and a cooler increases decreases room temperature. Since these are in the same direction opposite direction , negative feedback inhibits facilitates the cooler (function). Because of this control, the room temperature-decreasing effect of the cooler strengthens weakens , and the increased decreased room temperature decreases increases (towards that before summer). Namely, the initial change (the increase in room temperature) increases decreases (disappears) .

2.

With the summer heat, room temperature is increased decreased , and a cooler increases decreases room temperature. Since these are in the same direction opposite direction , negative feedback inhibits facilitates the cooler (function).

3.

When room temperature is increased, negative feedback inhibits facilitates cooler (function).

4.

When room temperature is increased, negative feedback inhibits facilitates cooler (function). Because of this control, the room temperature-decreasing effect of cooler strengthens weakens , and the increased decreased room temperature decreases increases (towards that before summer). Namely, the initial change (the increase in room temperature) increases decreases (disappears) .