The Digestive and Excretory Systems Answers
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Which best describes the physical and chemical digestion of food?
A
Physical and chemical digestion occur in the mouth; only chemical digestion occurs in the small intestine.B
Physical and chemicall digestion occur in the small intestine; only chemical digestion occurs in the mouth.C
Only physical digestion occurs in the stomach; chemical and physical digestion occur in the large intestine.D
Only physical digestion occurs in the large intestine; physical and chemical digestion occur in the stomach.2
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Which are structures of the excretory system? Select four options.kidneyspleenbladderesophagusureterurethra
A
kidneyB
spleenC
bladderD
esophagusE
ureterF
urethra3
The picture represents the excretory system.
A
nephronB
ureterC
bladderD
urethra4
In which part of the digestive system does a chemical change of the food first occur?
A
mouthB
esophagusC
stomachD
liver5
The diagram shows a nephron.
A
WB
XC
YD
Z6
Which statement best describes the breakdown of food in the digestive system?
A
Carbohydrate digestion starts in the stomach and protein digestion starts in the stomach.B
Carbohydrate digestion starts in the mouth and protein digestion starts in the stomach.C
Carbohydrate digestion starts in the esophagus and protein digestion starts in the small intestine.D
Carbohydrate digestion starts in the small intestine and protein digestion starts in the esophagus.7
Which plays both a role in physical and chemical digestion?
A
teethB
salivaC
gall bladderD
villi8
Which occurs during digestion?
A
The mouth only allows for physical digestion.B
The mouth only allows for chemical digestion.C
Chemical digestion prepares the food for physical digestion.D
Physical digestion prepares the food for chemical digestion.9
Which is the proper order of structures that contact the substances removed from the blood?
A
nephron → urethra → bladder → ureterB
urethra → ureter → bladder → nephronC
nephron → ureter → bladder → urethraD
urethra → bladder → ureter → nephron10
Once the teeth start grinding food, is produced to make food moist and slippery.
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