Homeostasis & Feedback Loops

Homeostasis:

• allows for a wildly fluctuating internal environment

• 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 does not incorporate a form of feedback regulation

• when you stay at home

Tags

NGSS.HS-LS1-3

If the environment gets cold, we will often shiver in order to:

• keep body temperature the same as the external temperature

• decrease body temperature

• increase body temperature

• regulate blood pressure

Tags

NGSS.HS-LS1-3

An example of a negative feedback loop is ...

• Blood glucose regulation

• Temperature regulation

• Heart rate regulation

• All of the above

Tags

NGSS.HS-LS1-3

True or False: cells are to smallest unit of life

• True

• False

Tags

NGSS.MS-LS1-1

What are the levels of organization starting from simple to complex?

• cells- tissues- organs- organ systems- organisms

• cells- organs- organisms- tissues- organ systems

• organisms- organ systems- organs- tissues- cells

• tissue- cells- organs- organ systems- organisms

Tags

NGSS.HS-LS1-2

True or False: Our digestive system includes organs such as our esophagus, stomach, small intestines, and large intestines

• True

• False

Tags

NGSS.MS-LS1-7

What hormone is produced in the pancreas that lowers blood sugar?

• Insulin

• Glucagon

• Glucose

• Eating more sugar

Tags

NGSS.HS-LS1-3

True or False: Our organ systems work separately and do not interact with each other at all in our bodies

• True

• False

Tags

NGSS.HS-LS1-2

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?

• Negative Feedback

• Positive Feedback

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. This is an example of a:

• Negative Feedback Loop

• Positive Feedback Loop

Tags

NGSS.HS-LS1-3