| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.71 |
| Score | 0% | 74% |
The large intestine does which of the following?
breaks down starches |
|
processes the physical waste produced by digestion |
|
breaks down fats |
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breaks down proteins |
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.
Which of the following is not a medium for sound waves?
liquid |
|
vacuum |
|
solid |
|
none of these is a medium for sound waves |
A vibrating object produces a sound wave that travels outwardly from the object through a medium (any liquid or solid matter). The vibration disturbs the particles in the surrounding medium, those particles disturb the particules next to them, and so on, as the sound propagates away from the vibration.
Saturated fats can __________ LDL ("bad") cholesterol while unsaturated fats can __________ it.
stabilize, raise |
|
decrease, stabilize |
|
raise, decrease |
|
decrease, raise |
Saturated fats can raise LDL ("bad") cholesterol while unsaturated fats can decrease it.
An element in the physical state of __________ maintains neither a constant volume nor a constant shape.
plasma |
|
liquid |
|
gas |
|
solid |
The gaseous state occurs at a higher temperature range than the solid and liquid states of the same substance. In this state, molecules flow very freely around each other and will spread out as far as they're able. Gases maintain neither a constant volume nor a constant shape.
When two air masses meet and neither is displaced, what kind of front is present?
stationary |
|
cold |
|
warm |
|
occluded |
When two air masses meet and neither is displaced, a stationary front is created. Stationary fronts often cause persistent cloudy wet weather.