Georgia Science Grade 7

Chapter 20: Respiration and Excretion

CRCT Practice

1
If the amount of body water lost in the urine increased by 500 mL, what percent of the total body water lost would now be lost in the urine?

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A)60%
B)75%
C)67%
D)66%
2
If a person had diarrhea, which source of body water loss would increase?

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A)urine
B)lungs
C)skin
D)feces
3
The movement of the chest that brings air into the lungs and removes waste gases is called
A)oxidation.
B)breathing.
C)respiration.
D)expiration.
4
What is the structure shown and to what body system does it belong?

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A)capillary—circulatory
B)alveolus—respiratory
C)nephron—urinary
D)ureter—excretory
5
What is the correct order of steps in the abdominal thrust maneuver?
A)Rescuer stands behind victim and wraps arms around victim's upper abdomen; rescuer places fist against victim's stomach; rescuer thrusts fist up into area below ribs; rescuer repeats action as many times as necessary.
B)Rescuer places fist against victim's stomach; rescuer thrusts fist up into area below ribs; rescuer stands behind victim and wraps arms around victim's upper abdomen; rescuer repeats action as many times as necessary.
C)Rescuer places fist against victim's stomach; rescuer thrusts fist up into area below ribs; rescuer repeats action as many times as necessary.
D)Rescuer stands in front of victim; rescuer places fist against victim's stomach; rescuer thrusts fist up into area below ribs; rescuer repeats action as needed.
6
What traps dust, pollen, and other materials in your nose?
A)glands
B)vocal cords
C)nasal hairs and mucus
D)epiglottis
7
For one week, research scientists collected and accurately measured the amount of body water lost and gained per day for four different patients. The table lists results from their investigation. What was Mr. Cheng's average daily body water loss for the

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A).45 L
B).47 L
C).50 L
D).74 L
8
Use the table to determine which patient had the greatest amount of body water gained on days 1 and 2?

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A)Mr. Stoler
B)Mr. Jemma
C)Mr. Lowe
D)Mr. Cheng
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