
Lesson 1.7 Stability of Living Things
Presentation
•
Biology
•
9th Grade
•
Practice Problem
•
Easy
Standards-aligned
Julianna Schweinsburg
Used 2+ times
FREE Resource
0 Slides • 6 Questions
1
Reorder
Place the steps of a negative feedback mechanism and try to put them in the correct order. Just do your best (we haven't learned this yet!)
a variable in the body changes from the set point
receptor cells detect the change
a correction mechanism turns on
body conditions return to the set point
the feedback mechanism turns off
2
Multiple Select
Refer to the diagram. What two organs play an essential role in maintaining blood glucose levels?
heart
pancreas
liver
bladder
3
Multiple Select
Refer to the diagram. Identify the two stimuli in this feedback loop. Select all that apply (2).
blood glucose level falls
blood glucose level remains the same
blood glucose level rises
body cells take up glucose
4
Multiple Choice
Refer to the diagram. What happens immediately after blood glucose levels rise?
liver breaks down glycogen
blood glucose level falls
alpha cells in pancreas release glucagon
beta cells in pancreas release insulin
5
Multiple Choice
Refer to the diagram. What is the "end goal" of a negative feedback mechanism?
maintain homeostasis
maintain correct glucose levels only
create new body systems
defeat positive feedback mechanisms
6
Multiple Choice
Refer to the diagram. If a person's blood glucose level was 130mg/100ml, would you say their blood glucose level is too high or too low?
too high
too low
Place the steps of a negative feedback mechanism and try to put them in the correct order. Just do your best (we haven't learned this yet!)
a variable in the body changes from the set point
receptor cells detect the change
a correction mechanism turns on
body conditions return to the set point
the feedback mechanism turns off
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