| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.74 |
| Score | 0% | 75% |
An element in the physical state of __________ maintains a constant volume and shape.
solid |
|
gel |
|
liquid |
|
gas |
An element in a solid state has atoms or molecules that are constricted and do not move freely. Solids maintain a constant volume and shape and exist at a lower temperature than liquids or gases.
In cell biology, where does DNA replication take place?
mitochondria |
|
nucleus |
|
cytoplasm |
|
Golgi apparatus |
The cell nucleus contains the genetic material of the cell and is where DNA replication takes place.
Food is mixed with gastric acid and pepsin in the __________ to help break down protein.
stomach |
|
large intestine |
|
small intestine |
|
mouth |
Food is mixed with gastric acid and pepsin in the stomach to help break down protein.
The ozone layer is in which of Earth's atmospheric layers?
mesosphere |
|
troposphere |
|
thermosphere |
|
stratosphere |
The stratosphere is just above the troposphere and is stratified in temperature with warmer layers higher and cooler layers closer to Earth. This increase in temperature is a result of absorption of the Sun's radiation by the ozone layer.
Saturated fats can __________ LDL ("bad") cholesterol while unsaturated fats can __________ it.
stabilize, raise |
|
raise, decrease |
|
decrease, raise |
|
decrease, stabilize |
Saturated fats can raise LDL ("bad") cholesterol while unsaturated fats can decrease it.