| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.00 |
| Score | 0% | 60% |
When the clouds become too saturated with water, the water is released as precipitation in the form of:
rain |
|
snow or ice |
|
snow |
|
ice |
Rising into the atmosphere, the water condenses into clouds. When the clouds become too saturated with water, the water is released as snow or ice precipitation which may warm as it falls to reach Earth as rain.
In the heart, blood flows from the __________ ventricle to the lungs then back to the heart via the __________ atrium.
left, right |
|
right, right |
|
left, left |
|
right, left |
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.
Which of these layers is found directly below the Earth's crust?
mantle |
|
inner core |
|
outer core |
|
continents |
The crust is the Earth's outermost layer and is divided into oceanic and continental types. Oceanic crust is 3 miles (5 km) to 6 miles (10 km) thick and is composed primarily of denser rock. Continental crust is 20 to 30 miles (30 to 50 km) thick and composed primarily of less dense rock. The crust makes up approximately one percent of the Earth's total volume.
Food is mixed with gastric acid and pepsin in the __________ to help break down protein.
stomach |
|
small intestine |
|
large intestine |
|
mouth |
Food is mixed with gastric acid and pepsin in the stomach to help break down protein.
When compared to eukaryotic cells, prokaryotic cells are:
more complex |
|
less complex |
|
none of these |
|
similarly complex |
Cells are classified into one of two groups based on whether or not they have a nucleus. Eukaryotic cells have a nucleus, prokaryotic cells do not have a nucleus and therefore have a less complex structure than eukaryotic cells.