| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.36 |
| Score | 0% | 67% |
Which is the proper order of Earth's atmospheric layers from the surface up to space?
thermosphere, mesosphere, stratosphere, troposphere |
|
stratosphere, troposphere, mesosphere, thermosphere |
|
troposphere, stratosphere, mesosphere, thermosphere |
|
mesosphere, thermosphere, stratosphere, troposphere |
The troposphere is the closest layer to Earth, followed by the stratosphere, mesosphere, and finally the thermosphere which borders space.
Which of the following states of matter exists at the lowest temperature?
solid |
|
none of these |
|
gas |
|
liquid |
Solids exist at a lower temperature than liquids which exist at a lower temperature than gases.
In the heart, the __________ artery and vein manage blood flow to the lungs.
pulmonary |
|
capillary |
|
aorta |
|
atrial |
The two largest veins in the body, the venae cavae, pass blood to the right ventricle which pumps the blood to the lungs through the pulmonary artery. Blood picks up oxygen in the lungs and returns it to the left atrium via the pulmonary vein.
During digestion, the kidneys filter substances from the blood. Which of the following is not filtered by the kidneys?
fats |
|
water |
|
minerals |
|
salt |
Chemical waste like excess water, minerals, and salt are filtered from the blood by the kidneys and secreted into the urine. Urine is transported from the kidneys to the bladder through ureters.
In cell biology, where does DNA replication take place?
mitochondria |
|
Golgi apparatus |
|
cytoplasm |
|
nucleus |
The cell nucleus contains the genetic material of the cell and is where DNA replication takes place.