| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.34 |
| Score | 0% | 67% |
In cell biology, where does DNA replication take place?
mitochondria |
|
cytoplasm |
|
Golgi apparatus |
|
nucleus |
The cell nucleus contains the genetic material of the cell and is where DNA replication takes place.
Which of the following is not a medium for sound waves?
solid |
|
vacuum |
|
none of these is a medium for sound waves |
|
liquid |
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.
What kind of weather front is likely to create clouds and storms?
cold front |
|
warm front |
|
stationary front |
|
temperate front |
A warm front is the boundary between warm and cool (or cold) air when the warm air is replacing the cold air. Warm air at the surface pushes above the cool air mass creating clouds and storms.
The large intestine does which of the following?
processes the physical waste produced by digestion |
|
breaks down fats |
|
breaks down starches |
|
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.
A transition zone between two air masses is called:
fog |
|
thunderstorm |
|
boundary |
|
front |
An air mass is a large body of air that has similar moisture (density) and temperature characteristics. A front is a transition zone between two air masses.