| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 2.97 |
| Score | 0% | 59% |
Which of the following does not filter air as part of the respiratory system?
epiglottis |
|
pharynx |
|
trachea |
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nasal cavity |
After air enters through the nose, it passes through the nasal cavity which filters, moistens, and warms it. Further filtering takes place in the pharynx, which also helps protect against infection, and then in the trachea which is just past the epiglottis which prevents food from entering the airway.
Changes to an object's speed or direction of motion are caused by which of the following?
power |
|
kinetic energy |
|
work |
|
a force |
Force is applied to change an object's speed or direction of motion.
What part of the food chain serves only as food for other organisms?
primary consumers |
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decomposers |
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secondary consumers |
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producers |
Producers (autotrophs) serve as a food source for other organisms. Typical producers are plants that can make their own food through photosynthesis and certain bacteria that are capable of converting inorganic substances into food through chemosynthesis
During digestion, after proteins are broken down where does the undigested food go next?
stomach |
|
esophagus |
|
large intestine |
|
small intestine |
Food is mixed with gastric acid and pepsin in the stomach to help break down protein.
In the water cycle, infiltration is most closely related to:
rivers |
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water table |
|
runoff |
|
oceans |
The water then accumulates as runoff and eventually returns to bodies of water or is absorbed into the Earth (infiltration) and becomes part of the water table, an underground resevoir of fresh water.