| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.39 |
| Score | 0% | 68% |
The large intestine does which of the following?
breaks down proteins |
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processes the physical waste produced by digestion |
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breaks down fats |
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breaks down starches |
The large intestine (colon) follows the small intestine and processes the physical waste produced by digestion, absorbing water and minerials that remain back into the body. Solid waste is then stored in the rectum while liquid waste is stored in the bladder.
The pitch of the siren of an approaching ambulance changes as it approaches you. This is an example of which of the following?
reflection |
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sound radiation |
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Doppler effect |
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refraction |
The Doppler effect occurs when the source or listener (or both) of sound waves is moving. If they're moving closer together, the listener perceives the sound with a higher pitch and, when they're moving apart, the listener perceives the sound with a lower pitch.
What type of cloud is responsible for fog?
cumulus |
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cumulonimbus |
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cirrus |
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stratus |
Clouds are categorized based on their shape, size, and altitude. Stratus clouds are low-altitude clouds characterized by horizontal layering with a broad flat base. When stratus clouds occur on the ground the result is fog.
In the classification of life, bacteria, archaea and eukaryota are which of the following?
species |
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classes |
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kingdoms |
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domains |
The broadest classification of life splits all organisms into three groups called domains. The three domains of life are bacteria, archaea and eukaryota.
Which of these parts of digestion takes place in the mouth?
breaking down starches |
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breaking down fats |
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breaking down proteins |
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absorbing nutrients |
Digestion begins in the mouth where the teeth and tongue break down food mechanically through chewing and saliva, via the enzyme salivary amylase, starts to break starches down chemically. From the mouth, food travels down the esophagus where contractions push the food into the stomach.