Feedback Loops and Homestasis

Negative Feedback Loops:

• amplify processes

• maintain a set target

• are initiated during childbirth

• are found only in plants

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

Maintaining blood pH is an example of a:

• negative feedback loop

• positive feedback loop

Tags

NGSS.HS-LS1-3

Maintaining body temperature is an example of a:

• negative feedback loop
• positive feedback loop

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 Loop

• Negative Feedback Loop

Tags

NGSS.HS-LS1-3

Name two types of feedback loops.

• Negative and Inhibitor

• Positive and Negative

• Stimulator and Increaser

• Thermostat and Regulator

Tags

NGSS.HS-LS1-3

An example of a negative feedback loop is

• Blood glucose regulation

• Blood pressure regulation

• Thermoregulation

• All of the above

Tags

NGSS.HS-LS1-3

An example of a positive feedback loop is ____________.

• Childbirth

• Blood Pressure regulation

• Body Temperature regulation

• All of the above

Tags

NGSS.HS-LS1-3

Most of the homeostatic feedback mechanisms are positive feedback systems.

• True

• False

Tags

NGSS.HS-LS1-3

Homeostasis in the human body is often maintained by a: 

• neutral feedback loop 
• solar feedback loop
• positive feedback loop
• negative feedback loop

Tags

NGSS.HS-LS1-3