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Homeostasis

Total questions: 15

Worksheet time: 14mins

Name
Class
Date
1.

Positive Feedback loop

a)

decreases the stimulus

b)

increases the stimulus

2.

Negative feedback returns BACK to the set point

a)

False

b)

True

3.
The maintenance of an organism’s internal environment is called:
a)
compensating
b)
homeostasis
c)
balancing
d)
routine
4.
If the environment gets cold, we will often shiver in order to:
a)
keep body temperature the same as the external temperature
b)
decrease body temperature
c)
increase body temperature
d)
regulate blood pressure
5.

Negative Feedback loop

a)

decreases the stimulus

b)

increases the stimulus

6.

This graph shows an example of...

a)

Blood sugar regulation

b)

Homeostasis

c)

Negative feedback

d)

Positive feedback

7.
The "cause" for something to happen is the
a)
response
b)
effect
c)
stimulus
d)
homeostasis
8.

A response is

a)

your body's reaction to change

b)

The change in the environment

c)

what happens

9.

According to the model, what is a normal blood glucose (sugar) level?

a)

270 mg/100mL

b)

180 mg/100 mL

c)

45 mg/100 mL

d)

90 mg/100 mL

10.

According to the model, what is the response to HIGH blood glucose (sugar)?

a)

Pancreas releases insulin into blood

b)

Pancreas releases glucagon into blood

11.

According to the model, what is the response to LOW blood glucose (sugar)?

a)

Pancreas releases insulin into blood

b)

Pancreas releases glucagon into blood

12.

The ability to maintain body temperature within a certain range is ...

a)

thermodynamics

b)

thermoregulation

c)

thermostat

d)

thermometer

13.

How does the body respond when more oxygen is required?

a)

Decreasing heart rate

b)

Increasing heart rate

c)

Decreasing blood pressure

d)

Increasing blood pressure

14.

Identify the STIMULUS.

Scenario: A person begins to exercise which causes their body temperature to increase. The temperature change is noticed and the person begins to sweat and their body temperature decreases.

a)

temperature change is noticed

b)

person begins to sweat

c)

body temperature decreases

d)

person begins to exercise

15.

Identify the RESPONSE.

Scenario: A person begins to exercise which causes their body temperature to increase. The temperature change is noticed and the person begins to sweat and their body temperature decreases.

a)

temperature change is noticed

b)

body temperature increases so the person begins to sweat

c)

body temperature decreases

d)

person begins to exercise