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11/16 Internal/External Stimuli

Total questions: 21

Worksheet time: 11mins

Name
Class
Date
1.
Homeostasis...
a)
A stimulus from inside an organism
b)
How an organism reacts to a change
c)
The ability to maintain a stable internal environment (type of equilibrium or balance)
d)
A stimulus from outside an organism
2.
Stimulus...
a)
A change that prompts an action-the cause
b)
The ability to maintain a stable internal environment (type of equilibrium or balance)
c)
How an organism reacts to a change and results in a change in behavior- the effect
d)
Constant and balanced environment
3.
Which of the following is an example of internal stimuli?
a)
Smelling pizza and then eating a piece of pizza
b)
Seeing ice cream on television and then eating a bowl of ice cream
c)
After working out feeling sore in your legs and then placing ice on the sore spot
d)
After working out seeing a bottle of water and drinking water
4.
A cheetah's water levels are becoming too high, and its thirst is quenched. In response to this, the cheetah's body will send internal signals...
a)
Of hunger, since the cheetah needs food
b)
Of thirst, since all living things need water
c)
To sweat, so the organism can shed some of the water
d)
Of quenched thirst, so the organism will stop drinking water
5.
Which of the following is an example of an external Stimuli?
a)
Becoming dehydrated and then taking a drink of water
b)
Getting a headache and then taking Excedrin
c)
Having hunger pains and then eating a sandwich
d)
Smelling Pizza and then eating a piece
6.
As the season turns from winter to spring, what is the most likely response that a bear's body has to the changing season?
a)
The bear stores more body fat to maintain the necessary body heat and more nutrition because there may be less prey.
b)
The bear produces less fur and begins shedding to allow its body temperature to adjust the warming climates
c)
The bear's fur becomes darker so it is easier to hide from its prey
d)
The bear begins to store food and find shelter for hibernation
7.
Jackson is around his friend who is constantly sick. Jackson begins coughing and sneezing the next day at school. What is the possible stimulus and response?
a)
Internal stimulus is coughing, the response is getting sick
b)
External stimulus is coughing, the response is getting sick
c)
Internal stimulus is germs/bacteria, the response is coughing
d)
External stimulus is germs/bacteria, the response is coughing
8.

You feel hungry so you eat some food.

a)

external stimulus

b)

internal stimulus

9.

It is a very hot, sunny day so a dog sits in the shade.

a)

external stimulus

b)

internal stimulus

10.

An animal is cold so it moves into the sun. What is the underline phrase?

a)

stimulus

b)

response

11.

You are hungry so you eat some food. What is the underline phrase?

a)

stimulus

b)

response

12.

Getting a drink when you are thirsty. What is the underline phrase?

a)

stimulus

b)

response

13.
There is high temperature outside. What type of response can a person's body have to regulate body temperature?
a)
Wearing a jacket
b)
Sweating
c)
Taking an ice bath
d)
Wearing a visor
14.

A person becomes ill because they contracted a virus. The person's body runs a fever. What is an internal response by the person's body to control it's body temperature?

a)

taking aspirin

b)

covering up with a blankie

c)

drinking a cool beverage

d)

sweating

15.

When faced with a life-threatening situation, some humans respond in a fight or flight response that can be stimulated by an internal or external stimuli. Which of the following demonstrates a fight response from an EXTERNAL stimulus?

a)

A male approaches a mother with a baby...the mother charges at the male to protect her baby.

b)

a male bird shows his tailfeathers...the female is attracted to the male

c)

shorter daylight hours...humans sleep longer.

d)

warmer weather...humans wear shorts

16.

If two forces are equal, what is the result?

a)

small movement will occur

b)

no movement will occur

c)

great movement will occur

17.

A push or a pull is a..

a)

organism

b)

organ

c)

force

d)

cell

18.

Which of the following is an organ providing a force?

a)

The heart contracts and expands to move blood through the body.

b)

The excretory system filters waste.

c)

The skeletal system protects organs.

d)

the digestive system breaks down food.

19.
Why is the diaphragm important to the respiratory system ?  
a)
It contracts or expands air from the lungs.
b)
It helps the system to digest. 
c)
It helps the system to do its main functions. 
d)
It helps decrease the carbon dioxide in the system. 
20.

Which part of the blood transports oxygen to the body's tissues in exchange for carbon dioxide.

a)

White Blood Cells

b)

Red Blood Cells

c)

Platelets

d)

Plasma

21.

What are responsible for breathing?

a)

Heart

b)

Lungs

c)

Nose

d)

Mouth

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