Positive and Negative Feedback 4.2.2

Question 1

What is amplification?

Question 2

What are ectotherms?

Question 3

What are feedback mechanisms?

Answer 3

Physiological reactions within the body that work to return the body to its normal condition

-(returns back to the set point)

Question 4

What is homeostasis?

Answer 4

Refers to a stable internal environment within an organism

Question 5

What is positive feedback loop?

Answer 5

Reinforce and increase the output the output of the stimulus until the stimulus is not

working through a change
(1 scenario)

ex.
childbirth

Question 6

What is negative feedback loop?

Answer 6

Maintain homeostasis by regulation physiological processes

(one or more scenario/sides)
-more common

looking for solution
ex.
blood sugar levels
osmoregulation (regulation water and salt concentration, produces a feeling)
thermoregulation

Question 7

What is set point?

Answer 7

Refers to the normal value of point of equilibrium maintained by the body (loops)

Question 8

What is stimulus?

Answer 8

Detects a change in the environment

(detection from a sense organism)

control center (brain) = receives and process the message (commands effector)

the effector = opposes or enhances stimulus (responds to the command center)

Answer 9

Organism that maintain their body temperature on their own
-thermoregulation
(don’t really have to work for it)
ex.
human