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Unit 1 Review
Test Description: Review for Unit 1
Instructions: Answer all questions to get your test result.
1) In a laboratory experiment, what is a “Control Group”?
A
The baseline
B
The variable that you change
C
Things in the experiment that don’t change
D
The tested variable
2) In a laboratory experiment, why is a hypothesis important even if it’s wrong?
A
Because it’s just good science.
B
Because it tells you the correct answer.
C
Because it’s part of the experiment.
D
Because it could lead you in a new direction.
3) What are the 2 main functions of the Digestive System?
A
Absorbing water and eliminating waste
B
Generating energy and carrying nutrients
C
Carrying oxygen and eliminating carbon dioxide
D
Eliminating Waste and Breaking Down Food
4) Which organ(s) are responsible for breaking down food?
A
Mouth and Stomach
B
Esophagus and Liver
C
Small Intestine
D
Rectum and Pancreas
5) Which organ(s) are responsible for absorbing nutrients from food?
A
Esophagus and Liver
B
Mouth and Stomach
C
Rectum and Anus
D
Small Intestine
6) What type of waste does the digestive system remove (choose the BEST answer)?
A
Solid
B
Liquid
C
None of the above.
D
Gas
7) When nutrients are absorbed in the digestive system, which system picks them up and carries them around the body?
A
Excretory
B
Nervous
C
Circulatory
D
Respiratory
8) What are the four main parts of the Circulatory System?
A
Heart, lungs, brain, muscles
B
Brain, nerves, spinal cord, neurons
C
Lungs, Bronchi, Trachea, Larynx
D
Heart, Arteries, Veins, capillaries
9) What are the main functions of the circulatory system?
A
To carry oxygen and nutrients to your cells and carry carbon dioxide away
B
To bring in oxygen and remove carbon dioxide
C
To control your body’s response to stimuli
D
To absorb nutrients and eliminate waste
10) What direction do arteries carry blood in relation to your heart? What direction do veins carry blood?
A
Towards, towards
B
Away, away
C
Away, towards
D
Towards, away
11) Which organs(s) are responsible for eliminating waste in the digestive system?
A
Esophagus and Liver
B
Rectum and Anus
C
Mouth and Stomach
D
Small Intestine
12) What does blood do while it is in capillaries?
A
Exchange materials (oxygen and carbon dioxide)
B
Move into the arteries
C
Nothing
D
Change directions
13) Why do the capillaries have such thin walls?
A
So the blood can move faster
B
To keep your blood pressure down
C
So the blood can slow down
D
So that materials can easily pass through their walls
14) What affect does exercise have on heart rate?
A
It depends on the exercise
B
Exercise has no effect on heart rate
C
Exercise increases heart rate
D
Exercise decreases heart rate
15) The circulatory system interacts with which other body system in the lungs?
A
Excretory
B
Nervous
C
Respiratory
D
Digestive
16) What is the main function of the respiratory system?
A
To control your body’s response to stimuli
B
To eliminate solid waste
C
To bring in oxygen and remove carbon dioxide
D
To absorb nutrients from food
17) What are the main organs of the respiratory system?
A
Heart
B
Brain
C
Kidneys
D
Lungs
18) What type of waste do the circulatory and respiratory systems eliminate?
A
All of the above
B
Gas
C
Solid
D
Liquid
19) What is the main function of the Nervous System?
A
To control your body’s response to stimuli
B
To absorb nutrients from food
C
To eliminate solid waste
D
To bring in oxygen and remove carbon dioxide
20) Why does your body react badly to smells you associate with negative memories?
A
To remind you of unpleasant things
B
To give you nightmares
C
To keep you from getting bored
D
To protect you from harm
*select an answer for all questions
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