Florida Science Grade 6

Chapter 5: Digestion, Respiration, and Excretion

Digestion, Respiration, and Excretion

1.
Where does the absorption of broken down food occur?
A)small intestine
B)stomach
C)liver
D)large intestine
2.
Which of these is the correct sequence of the organs of the digestive tract?
A)esophagus, mouth, stomach, small intestine, large intestine
B)mouth, small intestine, stomach, large intestine
C)mouth, esophagus, stomach, small intestine, large intestine
D)mouth, stomach, esophagus, small intestine, large intestine
3.
Which of these organs is an accessory organ?
A)small intestine
B)liver
C)stomach
D)mouth
4.
When coal and crude oil are used up, there won't be anymore available for use for _______ of years.
A)fat
B)enzyme
C)mineral
D)vitamin
5.
Food is changed in the stomach into a thin, watery liquid called _______.
A)chyme
B)peristalsis
C)villi
D)enzyme
6.
Which food group contains yogurt and cheese?
A)meat
B)trees
C)dairy
D)fruit
7.
Which of these is not a mineral?
A)calcium
B)phosphorus
C)vitamin
D)iron
8.
Next to oxygen, what is the most important factor for survival?
A)water
B)sunlight
C)food
D)heat
9.
Which of these is not a carbohydrate?
A)meat
B)sugar
C)starch
D)fiber
10.
_______ are organic nutrients needed in small quantities for growth, regulating body functions, and preventing some diseases.
A)Carbohydrates
B)Minerals
C)Vegetables
D)Vitamins
11.
Cellular respiration uses oxygen to release energy from _______.
A)cellulose
B)carbon dioxide
C)glucose
D)water
12.
When you inhale, which of the following contracts and relaxes?
A)nephrons
B)diaphragm
C)bronchioles
D)kidneys
13.
Exchange of gases occurs between capillaries and which of the following structures?
A)bronchi
B)trachea
C)bronchioles
D)alveoli
14.
Which of the following conditions does smoking worsen?
A)arthritis
B)respiration
C)excretion
D)emphysema
15.
Which of these is the correct sequence of air flow through the respiratory system?
A)larynx, pharynx, bronchi, trachea, alveoli
B)pharynx, larynx, trachea, bronchi, alveoli
C)Preservation
D)pharynx, larynx, trachea, alveoli, bronchi
16.
Which of the following is not part of the excretory system?
A)digestive system
B)respiratory system
C)urinary system
D)skeletal system
17.
Which of these is the correct sequence of urine moving through the urinary system?
A)bladder, kidneys, ureters, urethra
B)kidneys, ureters, bladder, urethra
C)kidneys, urethra, bladder, ureters
D)ureters, kidneys, bladder, urethra
18.
_______ failure can lead to a buildup of waste products in the body.
A)Kidney
B)Bladder
C)Urethra
D)Ureters
19.
What substance is not reabsorbed by blood after it passes through the kidneys?
A)salt
B)sugar
C)waste
D)water
20.
The _______ is an elastic, muscular organ that holds urine until it leaves the body.
A)ureter
B)nephron
C)urethra
D)bladder
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