Homeostasis - Assessment

1.

Multiple Choice

3 mins

1 pt

Which of the following describes homeostasis?

keeps variables exactly at the set point

organism's ability to maintain steady(stable) internal conditions

acts to keep values outside of a desired range

operates through positive feedback

2.

Multiple Choice

3 mins

1 pt

Negative feedback loops ...

are one way an organism can maintain homeostasis.

are rarely found in healthy individuals

respond by making deviations from normal even larger

cannot be counteracted with medicine

3.

Multiple Choice

3 mins

1 pt

Which correctly identifies all steps involved in negative feedback?

initiation event, stimulus, positive feedback, response, effector, control center, receptor

termination event, stimulus, reply, effector, control center, and receptor

initiation event, response, stimulus, effector, command center

initiation event, stimulus, receptor, control center, effector and response

4.

Multiple Choice

3 mins

1 pt

What part of the negative feedback loop is what happens inside of the organism, as the result of the effector?

Initiation event

Response

Receptor

Effector

5.

Multiple Choice

3 mins

1 pt

This part of the negative feedback loop causes a change in the environment, a disruption to homeostasis.

initiation event

control center

effector

receptor

6.

Multiple Choice

3 mins

1 pt

A change inside of the organism caused by the initiation event is the ...

response

effector

control center

stimulus

7.

Multiple Choice

3 mins

1 pt

Which part of the feedback loop is a body part that makes a change to bring the system back to homeostasis?

Effector

control center

response

receptor

8.

Multiple Choice

3 mins

1 pt

What detects that the system is outside of homeostasis and adjustments need to be made?

effector

response

control center

stimulus

9.

Multiple Choice

3 mins

1 pt

The body part that senses the change inside the organism ...

receptor

control center

effector

response

10.

Multiple Choice

3 mins

1 pt

Identify the initiation event.

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.

temperature change is noticed

person begins to sweat

body temperature decreases

person begins to exercise

11.

Multiple Choice

3 mins

1 pt

Identify the stimulus event.

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.

body temperature increases

person begins to sweat

temperature change is noticed

person begins to exercise

12.

Multiple Choice

3 mins

1 pt

Identify the stimulus that restores homeostasis.

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

temperature changes is noticed

a person begins to exercise

body temperature increases

body temperature decreases

13.

Multiple Choice

3 mins

1 pt

Which part of the feedback loop and body is responsible for sensing the temperature change?

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

control center - sweat glands

receptor - sweat

control center - hypothalamus (part of the brain)

receptor - brain and skin receptors

14.

Multiple Choice

3 mins

1 pt

Identify the response.

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

the person begins to sweat

the person begins to exercise

change in temperature

body temperature increases

15.

Multiple Choice

3 mins

1 pt

Which of the following is an example of a response to an internal stimulus?

you are tired

you are hot

you eat food

you are scared

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