| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.30 |
| Score | 0% | 66% |
Saturated fats can __________ LDL ("bad") cholesterol while unsaturated fats can __________ it.
stabilize, raise |
|
decrease, raise |
|
decrease, stabilize |
|
raise, decrease |
Saturated fats can raise LDL ("bad") cholesterol while unsaturated fats can decrease it.
Which part of the respiratory system helps protect against infection?
trachea |
|
epiglottis |
|
nasal cavity |
|
pharynx |
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, responsible for preventing food from entering the airway.
Poor balance could indicate an issue with which part of the nervous system?
cerebellum |
|
spinal cord |
|
cerebrum |
|
medulla |
The cerebellum is a large cluster of nerves at the base of the brain that's responsible for balance, movement, and muscle coordination.
The transfer of heat by the circulation or movement of the heated parts of a liquid or gas is called:
radiation |
|
conduction |
|
diffusion |
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convection |
Convection is the transfer of heat by the circulation or movement of the heated parts of a liquid or gas. Examples of heat transfer by convection include water coming to a boil on a stove, ice melting, and steam from a cup of coffee.
During digestion, where is digested food absorbed into the blood stream?
stomach |
|
pancreas |
|
small intestine |
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large intestine |
The small intestine is where most digestion takes place. As food travels along the small intestine it gets broken down completely by enzymes secreted from the walls. These enzymes are produced in the small intestine as well as in the pancreas and liver. After the enzymes break down the food, the resulting substances are then absorbed into the blood via capillaries in the small intestine walls.