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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 variable that you change
B
The baseline
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’s part of the experiment.
C
Because it could lead you in a new direction.
D
Because it tells you the correct answer.
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
Rectum and Pancreas
B
Mouth and Stomach
C
Small Intestine
D
Esophagus and Liver
5) Which organ(s) are responsible for absorbing nutrients from food?
A
Rectum and Anus
B
Small Intestine
C
Mouth and Stomach
D
Esophagus and Liver
6) What type of waste does the digestive system remove (choose the BEST answer)?
A
Solid
B
None of the above.
C
Gas
D
Liquid
7) When nutrients are absorbed in the digestive system, which system picks them up and carries them around the body?
A
Nervous
B
Circulatory
C
Excretory
D
Respiratory
8) What are the four main parts of the Circulatory System?
A
Heart, lungs, brain, muscles
B
Lungs, Bronchi, Trachea, Larynx
C
Brain, nerves, spinal cord, neurons
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
Away, towards
B
Away, away
C
Towards, away
D
Towards, towards
11) Which organs(s) are responsible for eliminating waste in the digestive system?
A
Small Intestine
B
Mouth and Stomach
C
Esophagus and Liver
D
Rectum and Anus
12) What does blood do while it is in capillaries?
A
Exchange materials (oxygen and carbon dioxide)
B
Nothing
C
Move into the arteries
D
Change directions
13) Why do the capillaries have such thin walls?
A
So that materials can easily pass through their walls
B
So the blood can move faster
C
So the blood can slow down
D
To keep your blood pressure down
14) What affect does exercise have on heart rate?
A
Exercise decreases heart rate
B
Exercise increases heart rate
C
Exercise has no effect on heart rate
D
It depends on the exercise
15) The circulatory system interacts with which other body system in the lungs?
A
Excretory
B
Digestive
C
Respiratory
D
Nervous
16) What is the main function of the respiratory system?
A
To bring in oxygen and remove carbon dioxide
B
To absorb nutrients from food
C
To eliminate solid waste
D
To control your body’s response to stimuli
17) What are the main organs of the respiratory system?
A
Kidneys
B
Lungs
C
Brain
D
Heart
18) What type of waste do the circulatory and respiratory systems eliminate?
A
Gas
B
All of the above
C
Liquid
D
Solid
19) What is the main function of the Nervous System?
A
To absorb nutrients from food
B
To control your body’s response to stimuli
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 keep you from getting bored
B
To remind you of unpleasant things
C
To protect you from harm
D
To give you nightmares
*select an answer for all questions
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