Feedback Loops

According to the feedback loop, what does high blood sugar promote?

• Insulin Release

• Glucagon Release

• Insulin Uptake

• Glycogen Uptake

Tags

NGSS.HS-LS1-3

The two types of feedback systems that help organisms maintain homeostasis are:

• positive and negative 

• receptor and effector

• static and dynamic

• minor and major

Tags

NGSS.HS-LS1-3

When glucose levels in the blood rise, your brain sends a signal to your pancreas. The pancreas releases insulin, which opens channels in cell membranes to allow glucose to enter the cell, lowering blood sugar levels. 

• Positive Feedback Response

• Negative Feedback Loop 

Tags

NGSS.HS-LS1-3

When you get cut, your skin cells release hormones that signal platelets to come and stop the bleeding. Platelets then release more hormones that signal even more platelets to help stop bleeding. The hormone signals continue until the cut is closed.

• Positive Feedback Response

• Negative Feedback Loop 

Tags

NGSS.HS-LS1-3

What type of feedback loop is shown?

• negative

• neutral

• positive

Tags

NGSS.HS-LS1-3

As the Earth warms, upper layers of permafrost melt, producing waterlogged soil above frozen ground. Methane gas is released into the environment. The greenhouse effect is enhanced. The Earth warms, melting more permafrost.

• Positive Feedback Loop

• Negative Feedback Loop

Tags

NGSS.HS-ESS2-2

As the Earth warms, increased evaporation produces more clouds. Clouds increase albedo, reflecting more light away from the Earth. The temperature falls. Rates of evaporation fall.

• Positive Feedback Loop

• Negative Feedback Loop

Tags

NGSS.HS-ESS2-2

Which of the following is an example of a positive feedback loop in the human body?

• Blood clotting process

• Regulation of blood sugar levels

• Body temperature regulation

• Breathing rate control

Tags

NGSS.HS-LS1-3

What is the primary difference between positive and negative feedback loops?

• Positive feedback amplifies changes; negative feedback reduces changes

• Positive feedback reduces changes; negative feedback amplifies changes

• Both amplify changes

• Both reduce changes

Tags

NGSS.HS-LS1-3

In a negative feedback loop, what role does the effector play?

• Detects changes in the environment

• Sends signals to the control center

• Carries out the response to restore balance

• Stores information about the change

Tags

NGSS.HS-LS1-3