Feedback and homeostasis

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 body temperature is an example of a:

• negative feedback loop
• positive feedback loop

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

Homeostasis

• allows for a wildly fluctuating internal environment
• is impossible in vertebrates
• is the maintenance of a relatively stable internal environment and often incorporates a form of feedback regulation
• is the maintenance of a relatively stable external environment and often incorporates a form of feedback regulation

Tags

NGSS.HS-LS1-3

What type of feedback loop is shown?

• negative
• neutral 
• positive

Tags

NGSS.HS-LS1-3

What type of feedback loop is shown?

• Positive
• Neutral
• Negative

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. This is an example of what type of feedback?

• Positive Feedback Response

• Negative Feedback Loop

Tags

NGSS.HS-LS1-3

If the calcium in your blood decreases below homeostasis levels, a gland in the brain will sense the decrease and send a chemical message to your bones. Your bones will release calcium into the blood, bringing blood calcium levels back up. This is an example of what type of feedback?

• Positive Feedback Response

• Negative Feedback Loop

Tags

NGSS.HS-LS1-3

How many variables can be tested in a controlled experiment?

• one
• two
• three
• as many as possible

A student wants to test the effects of different types of exercise on heart rate.  What is the dependent variable?

• heart rate
• type of exercise
• amount of exercise
• time of day exercise occurs

Tags

NGSS.HS-ETS1-2