The Balancing Act

In the selection, "The Balancing Act" you read that, "All organisms are exposed to changes all the time, sometimes even every second." If this is true, then which of the following statements are true?

• the changes could be internal stimuli
• the changes could be external stimuli 
• organisms must respond quickly to internal and external changes
• all of these statements are true

Tags

NGSS.MS-LS1-8

Processes that amplify a response to an external stimulus are known as

• positive feedback loops
• negative feedback loops
• external stimuli
• internal stimuli

Tags

NGSS.HS-LS1-3

What does the term "steady state" refer to with respect to the process of homeostasis?

• balanced external environment
• balanced internal environment
• changing external environment
• changing internal environment

Tags

NGSS.HS-LS1-3

Feedback loops  help an organisms maintain homeostasis. In order for a feedback loop to be triggered, three different factors must be affected. In order they are:

• control center, receptor, effector
• receptor, effector, control center 
• receptor, control center, effector
• effector, control center, receptor

Tags

NGSS.HS-LS1-3

Failure to maintain homeostasis could result in:

• lack of internal balance
• eventual death
• difficulty carrying on metabolism 
• all three

Tags

NGSS.HS-LS1-3

Negative Feedback Loops:

• amplify processes
• prevent small changes from getting larger
• 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

Tags

NGSS.HS-LS1-3

Maintaining body temperature is an example of a:

• negative feedback loop
• positive feedback loop

Tags

NGSS.HS-LS1-3

Your body creating a scab when you get a scrape is an example of a:

• negative feedback loop
• positive feedback loop

Tags

NGSS.HS-LS1-3

The process of childbirth is an example of:

• negative feedback loop
• positive feedback loop

Tags

NGSS.HS-LS1-3