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WorksheetsHomeostasis & Feedback Loops
Total questions: 15
Worksheet time: 31mins
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
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
An example of a negative feedback loop is ...
Blood glucose regulation
Temperature regulation
Heart rate regulation
All of the above
True or False: cells are to smallest unit of life
True
False
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
True or False: Our digestive system includes organs such as our esophagus, stomach, small intestines, and large intestines
True
False
What hormone is produced in the pancreas that lowers blood sugar?
Insulin
Glucagon
Glucose
Eating more sugar
True or False: Our organ systems work separately and do not interact with each other at all in our bodies
True
False
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
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
